Monday, December 20, 2021

How Industrial Fishing Has Altered the Natural Balance of the Ocean

Thought LeadersIan HattonAlexander von Humboldt Research FellowMax Planck Institute for Mathematics in the Sciences

AZoCleantech speaks to Ian Hatton from Max Planck Institute for Mathematics in the Sciences about the consequences of industrial fishing and its effect on the ocean's natural balance.

How did you begin your research

 into industrial fishing and its effect on the ocean?

We began by compiling the biomass of all organisms in the ocean, from bacteria to whales. We used data from hundreds of thousands of measurements, from many different sources and locations globally to estimate the total biomass over the entire ocean. We also tallied meta-analyses and model output to reconstruct biomass in the years prior to 1850, when the ocean was in a more pristine state. Our methods were tailored to each major group of organisms.

What is the Sheldon size spectrum 

and how does it apply to your research?

We are accustomed to grouping organisms into species, but the Sheldon size spectrum groups organisms into size categories, regardless of which species they belong. These size classes get multiplicatively larger as we go from the smallest to the largest (e.g., 1, 10, 100 etc.) The Sheldon spectrum is the hypothesis, now 50 years old, that the total biomass in these different size groups is constant from bacteria to whales. This means that although whales might be 23 orders of magnitude larger than a bacteria (a one with 23 zeros), bacteria are 23 orders of magnitude more abundant, so their total biomass is equal.

What did your research involve?

Our research involved assembling all these disparate data sources to reconstruct the total biomass of all groups from bacteria to whales at a pristine point in time, before industrial fishing and whaling (circa 1850), and compare it to what it looks like today.

How has wide-scale industrial fishing 

affected oceans?

Different researchers might have different perspectives on the impacts of fishing, but the biomass structure of the ocean has been dramatically altered as a result of fishing. We found that the Sheldon spectrum hypothesis is broadly supported by data reconstruction for the pristine ocean, but the largest 1/3 of the spectrum (fish above 10 grams) have been significantly reduced so that this extremely large-scale pattern no longer holds.

industrial fishing, ocean balance

Image Credit: Max Planck Institute for Mathematics in the Sciences

How did your research team construct a large global dataset of marine organisms?

We used >200,000 water samples of bacteria and zooplankton, satellite imagery of chlorophyll to estimate phytoplankton, spatially resolved global biogeochemical models for fish biomass and IUCN data for marine mammals.

How did this dataset enable your team to 

differentiate the spatial distribution of 

12 major aquatic life groups in the ocean?

We used environmental correlates such as temperature and chlorophyll, to interpolate these data over the global ocean, for each group. We also employed two independent spatially resolved global models constrained by catch data to estimate fish over the global ocean. For large mammals, we used global population estimates from the IUCN. Essentially, we tailored our methods to the data available for each major group.

How did you use historical reconstructions 

and marine ecosystem models to assess

 marine biomass in pristine, pre-20th 

century oceans? What was the purpose of this?

We used historical reconstructions to assess the biomass spectrum before industrial fishing. This involved running our fish models back in time prior to industrial fishing, as well as using prior published marine mammal reconstructions. These historical reconstructions are beset by large uncertainties, but still provide a first-order approximation of what the oceans might have looked like before industrial fishing and whaling began.

How did your research highlight the human

 impacts on marine biomass and the

 inefficiency of fishing?

We demonstrated that the size spectrum, possibly life’s largest scale pattern, has been altered by the direct impacts of fishing. In other words, human activity has dramatically changed the law-like property of the ocean. We are still not sure of what the consequences of this could be.

Video Credit: Max Planck Institute for Mathematics in the Sciences

Do you have any future research you are 

able to discuss?

We are currently investigating theoretically where this very large-scale pattern originates. Much of prior thinking on this question was focused on certain groups such as zooplankton. By showing that the pattern appears to hold across all marine life, we need to expand our thinking to processes that could be common across the tree of life.

Where can readers find more information?

https://www.science.org/doi/10.1126/sciadv.abh3732

https://www.mis.mpg.de/institute/presse/news/hatton-humboldt-fellowship.html

About Ian Hatton

Ian Hatton has a background in biology. He previously studied and worked at McGill University, Canada, the National Institute for Mathematical Sciences, South Korea, Princeton University, USA, and the Institut de Ciència i Tecnologia Ambientals in Barcelona, Spain.

He is currently an Alexander von Humboldt Research Fellow at the Max Planck Institute for Mathematics in the Sciences in Leipzig, Germany.

Laura Thomson

Written by

Laura Thomson

Laura Thomson graduated from Manchester Metropolitan University with an English and Sociology degree. During her studies, Laura worked as a Proofreader and went on to do this full time until moving on to work as a Website Editor for a leading analytics and media company. In her spare time, Laura enjoys reading a range of books and writing historical fiction. She also loves to see new places in the world and spends many weekends looking after dogs as part of BorrowmyDoggy.com.

Simultaneous Heatwaves Will be More Frequent Due to Climate Change

Numerous large heatwaves the size of Mongolia happened at the same time approximately every day during the warm seasons of the 2010s throughout the Northern Hemisphere, according to a study guided by scientists from the Washington State University (WSU).

Simultaneous Heatwaves Will be More Frequent Due to Climate Change.
Image Credit: Lucian Dachman on Unsplash.

Applying climate data from 1979 to 2019, the scientists learned that the number of heatwaves taking place concurrently in the mid- to high-latitudes of the Northern Hemisphere was seven times more in the 2010s than in the 1980s. On average, there were simultaneous heatwaves on 143 days each year of the 2010s — nearly every day of the 153 days of the warm months of May to September.

The simultaneous heat events also became hotter and larger: their intensity grew by 17% and their geographic extent grew to 46%.

More than one heatwave occurring at the same time often has worse societal impacts than a single event. If certain regions are dependent on one another, for instance for agriculture or trade, and they’re both undergoing stresses at the same time, they may not be able to respond to both events.

Cassandra Rogers, Study Lead Author and Post-Doctoral Researcher, WSU

Details of the study have been published in the Journal of Climate.

Heatwaves could result in disasters from crop failures to wildfires. Simultaneous heatwaves can increase those threats, the authors highlighted, draining the ability of nations to offer mutual aid in crises as was witnessed during the numerous wildfires in the United States, Australia and Canada related to the 2019 and 2020 heatwaves.

An earlier study also discovered that concurrent heatwaves caused approximately a 4% decrease in crop production worldwide.

The study described large heatwaves as high-temperature events spanning three days or more and covering no less than 1.6 million km2 (around 620,000 square miles), which is approximately equivalent to the size of Iran or Mongolia.

The scientists examined ERA5 data generated by the European Center for Medium-Range Weather Forecasts, which combines massive amounts of observational data from weather stations on land, aircraft and water buoys as well as data from satellites with weather forecasting capacities.

ERA5 offers complete global estimates of hourly data for different climate variables from 1979, when satellite data became available, which is why the research concentrated on this time period.

With this observational data, the scientists learned that the main driver of the heatwaves was the overall increase in global mean temperature because of climate change. The world has warmed 1 °C (about 1.8 °F) over the last 100 years with the vast majority of the increase, two-thirds, happening since 1975.

The team also discovered that increasing incidence of two hemisphere-wide circulation patterns rendered certain areas more susceptible to simultaneous heatwaves, including eastern North America, East Asia, eastern and northern Europe and eastern Siberia.

The research adds more proof for the need to control greenhouse gas emissions and alleviate climate change, the scientists said, and the unrelenting increase in temperature means the world should get ready for more simultaneous heatwaves.

As a society, we are not currently adapted to the types of climate events we’re experiencing right now. It’s important to understand how we can reduce our vulnerability and adapt our systems to be more resilient to these kind of heat events that have cascading societal impacts.

Deepti Singh, Study Co-Author and Associate Professor, School of the Environment, WSU

Besides Rogers and Singh, authors involved in this study include Kai Kornhuber of Columbia University, Sarah Perkins-Kirkpatrick of the University of New South Wales in Australia, and Paul Loikith of Portland State University. This study received support from the National Science Foundation and the Australian Research Council.

Journal Reference:

Rogers, C.D.W., et al. (2021) Six-fold increase in historical Northern Hemisphere concurrent large heatwaves driven by warming and changing atmospheric circulations. Journal of Climatedoi.org/10.1175/JCLI-D-21-0200.1.

Source: https://wsu.edu


Study: Risk of overlapping heat waves grows

 in Northern Hemisphere

Andrew Freedman

AXIOS

A resident splashes water onto their face during a heat wave in Sacramento, Calif., July 8, 2021. 

Photo: David Paul Morris/Bloomberg via Getty Images

The risk of large heat waves happening simultaneously in at least two parts of the Northern Hemisphere is growing due to global warming and its effects on atmospheric circulation, a new study finds.

Why it matters: The study, accepted for publication in the Journal of Climate, adds to concerns about food supply disruptions and other major societal impacts, depending on the location of the concurrent extremes.

Driving the news: The research, led by Cassandra Rogers, a post-doctoral researcher at Washington State University, examined climate data from 1979 to 2019 and found a six-fold increase in the number of simultaneous large heat waves occurring in the Northern Hemisphere warm season between the 1980s and 2010s.

During the same period, the heat events grew in size and intensified. The study was discussed Thursday at a major Earth science meeting in New Orleans.

Details: While heat waves themselves can pose huge risks to human health, with hundreds of deaths attributed to last summer’s Pacific Northwest heat wave, for example, they can also prime the environment for wildfires and affect agriculture.

2019 study by Columbia University’s Kai Kornhuber, a co-author of the new research, found that simultaneous heat waves caused about a 4% decrease in crop production.

That research identified specific patterns of the jet stream, which steers storms, that are associated with heat extremes that tend to occur simultaneously in different breadbasket regions.

One such pattern, for example, can cause heat waves to break out in central North America, Eastern Europe and East Asia, the study found.

What they did: This study quantified large heat waves as periods of three or more days with daily mean temperature greater than the local 90th percentile with a range roughly the size of Mongolia or Iran (about 620,000 square miles).

The researchers were able to show that the primary driver of the increase in simultaneous heat waves is the background warming of the climate, plus warming's influences on atmospheric circulation, through changes in the jet stream, for example.

What they’re saying: "The fact that we know what's happening, we know these events are going to continue to happen, is a real opportunity to actually prevent the deaths that could happen," Rogers told Axios.

"I think it's a little silver lining there, as bad as the predictions are,” she added


41,000 years ago, auroras blazed near the equator

A geomagnetic disruption caused auroras to wander for centuries.
Earth is surrounded by a giant magnetic bubble called the magnetosphere, which is part of a dynamic, interconnected system that responds to solar, planetary and interstellar conditions
. (Image credit: NASA)

If you want to be dazzled by a spectacular northern lights display, your best bet is to skywatch near the North Pole. But that wasn't the case 41,000 years ago, when a disruption of Earth's magnetic field sent auroras wandering toward the equator.

During this geomagnetic disturbance, known as the Laschamp event or the Laschamp excursion, the planet's magnetic north and south weakened, and the magnetic field tilted on its axis and diminished to a fraction of its former strength. This lessened the magnetic pull that normally directs the flow of high-energy solar particles toward the north and south poles, where they interact with atmospheric gases to illuminate night skies as the northern and southern lights.

It took about 1,300 years for the magnetic field to return to its original strength and tilt, and during that time the auroras strayed to near-equatorial latitudes where they are typically never seen, scientists reported on Thursday (Dec. 16) at the annual conference of the American Geophysical Union (AGU), held in New Orleans and online.

This period of intense geomagnetic change may also have shaped changes in Earth's atmosphere that affected living conditions on parts of the planet, presenter Agnit Mukhopadhyay, a doctoral candidate in the Climate and Space Sciences Department at the University of Michigan, said at the AGU conference.

Earth's magnetic field is born in the churning of our planet's molten core. Metallic sloshing near Earth's center and the planet's rotation together generate magnetic poles at the surface in the north and south; magnetic field lines connect the poles in curving arcs. These form a protective zone, also known as the magnetosphere, which shields the planet from radioactive particles from space, according to NASA. The magnetosphere also protects Earth's atmosphere from being worn away by solar wind, or streaming particles blasted outward by the sun.

On the side of Earth that faces the sun (bearing the brunt of the solar wind), the magnetosphere is compressed to approximately 6 to 10 times Earth's radius. On Earth's nighttime side, the magnetosphere streams away into space and can extend for hundreds of Earth-lengths, according to NASA. But about 41,000 years ago, the magnetosphere's strength plummeted "to nearly 4% of modern values" and tilted on its side, Mukhopadhyay said. "Several investigations in the past have predicted that the magnetosphere disappeared completely on the day side," he added.

Mukhopadhyay and his colleagues used a daisy chain of different models to discover this result. They first fed data on the planet's magnetism from ancient rock sediments, as well as volcanic data, into a simulation of the magnetic field during the Laschamp event. They combined this data with simulations of the magnetosphere's interactions with the solar wind, then fed those results into another model that calculated the aurora's location, shape and strength by analyzing parameters of the solar particles that create auroras, such as their ion pressure, density and temperature.

This is the first time that scientists have used this technique "to simulate the geospace system and predict magnetospheric configurations, along with the location of the aurora," Mukhopadhyay said.

















Displays such as this one meandered far from their usual locations in northern latitudes, during an event that disrupted Earth's magnetic field for more than 1,000 years.
 (Image credit: Noppawat Tom Charoensinphon/Getty Images)

The team found that even though the magnetosphere shrank to about 3.8 times Earth's radius during the Laschamp event, it never disappeared entirely. During this period of reduced magnetic strength, the poles that were formerly positioned north and south moved toward equatorial latitudes — and the auroras followed them.

"The geomagnetic tilt was significantly skewed from the geographic poles," Mukhopadhyay said. "This led auroral precipitation to follow the magnetic poles and relocate from the geographic polar regions of Earth to equator-ward latitudes."

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Prior studies suggested that the Laschamps event could have affected habitability on prehistoric Earth by plunging the planet into an environmental crisis, and the new models hinted that such an outcome was "highly likely," Mukhopadhyay reported. Earlier this year, other researchers found that a weakened magnetosphere would have been easily penetrated by solar winds, leading to a damaged ozone layer, climate upheaval and extinctions — perhaps even contributing to the disappearance of Neanderthals in Europe, Live Science previously reported.

While their findings don't prove a cause-and-effect relationship between Laschamp's magnetic field changes and serious ecological repercussions on Earth, the models offered insights for future research that could establish such a link, Mukhopadhyay said.
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Originally published on Live Science.
Decreased Fungicide Application Causes Decline Of Resistant Fungal Pathogens Indicating Hidden In Field Fitness Costs
By Harry Jones On Dec 18, 2021
Amino acid 198 mutation frequency based on the collection region and the pathogen host. Credit: Michael J. Bradshaw, Holly P. Bartholomew, Dylan Hendricks, Autumn Maust, and Wayne M. Jurick,II

The use of fungicides to treat plant pathogens dates back 150 years, when a mixture of lime and copper sulfate, known as the “Bordeaux mixture,” was used to control fungal diseases in French vineyards. However, as fungicide usage has increased, their efficacy has decreased thanks to a phenomenon known as fungicide resistance.

A new paper in Phytopathology offers an analysis of fungicide resistance, one that came out of COVID-19 shelter-in-place orders. “With the onset of COVID-19, we were brainstorming ways to be productive while not being able to work in the lab,” explained Michael Bradshaw, a plant pathologist with the USDA. “I’m proud that this was the research we came with.”

Bradshaw and colleagues mined genetic data from postharvest pathogens to infer how quickly fungicide resistance develops and analyze the impact of fungicide use.

“What was really interesting is that we noticed a decline in fungicide-resistant pathogens five to ten years after a lag in fungicide usage,” Bradshaw said. “For example, fungicide resistant pathogens peaked between 2005 and 2009, which is five to ten years behind the peak of FRAC 1 fungicide applications.”

Their research also evaluates the global distribution of fungicide-resistant pathogens and determined that host plant, pathogen locality, and pathogen genus are also associated with resistance to certain types of fungicides.

“This study was originally conducted as a resource for countries and farmers reliant on fungicides to control postharvest pathogens,” said Bradshaw. “The compiled data highlights regions and hosts that are most prone to certain resistant pathogens and inform fungicide resistance management strategies.”

Also of note, Bradshaw and his colleagues hypothesize that FRAC1 fungicide-resistant pathogens are less likely to survive in nature when this class of fungicide is not applied, which is contrary to lab-based findings. Future research can evaluate this hypothesis in the field to evaluate FRAC1 class fitness penalties.

New broadly applicable tool provides insight into fungicide resistance

More information:
Michael J. Bradshaw et al, An Analysis of Postharvest Fungal Pathogens Reveals Temporal–Spatial and Host–Pathogen Associations with Fungicide Resistance-Related Mutations, Phytopathology (2021). DOI: 10.1094/PHYTO-03-21-0119-R

Provided by
American Phytopathological Society

Citation:
Decreased fungicide application causes decline of resistant fungal pathogens indicating hidden in field fitness costs (2021, December 17)
retrieved 18 December 2021
from https://phys.org/news/2021-12-decreased-fungicide-application-decline-resistant.html

Newly Discovered Transparent Cave Snail Has Long Rows of Intimidatingly Spikey Teeth


Ribbons of forked teeth from Iberozospeum species. (Adrienne Jochum)
17 DECEMBER 2021

When you think of snails, sharp jagged teeth are not usually what comes to mind. But you might have to reconsider because these squishy mollusks have terrifying lickity-bits when you look close enough under the microscope.

Snails use their weird-as-heck toothed-tongues called a radula to lick through all sorts of surfaces to feed, including grinding through rocks. While these 'teeth' are one of nature's toughest materials, they're still often softer than the surfaces where their food is, and the way they're used to 'punch' through surfaces causes them to wear out quickly. To compensate, snails can grow several new rows of 'teeth' each day.

The teeth arrays, which sit on a flexible muscular organ, can be quite distinct between species, making them important identification features.

Spekia zonata radula under SEM. (Stanislav N. Gorb)

For example, the radula in the scanning electron micrograph above belongs to a Spekia zonata, a species of freshwater snail from Lake Tanganyika in Africa. Compare that to the radula of an unspecified carnivorous land snail from East Africa seen below.

(National Museum Wales/Flickr/CC BY-NC-SA 2.0)

A new species of snail recently discovered in Spain is no exception, possessing rows upon rows of short but very pointy bits, which you can see below.

These freaky-mouthed mollusks were discovered tucked away in Iberian Peninsula caves. In fact, it's incredible researchers found them at all: The snails are only a few millimeters in size and fairly transparent.

Also exciting? These caves seem to contain an abundance of snail diversity.

"We succeeded in collecting 57 gastropod populations from various caves," said zoologist Adrienne Jochum from the Senckenberg Research Institute in Germany.

Analyzing these snails' morphology and genetics, University of Bern malacologist Jeannette Kneubühler and colleagues concluded that the new species, along with some previously identified species, belonged to a whole new genus which they called Iberozospeum.

Shells from different species of snails discovered in the Spanish caves. (Jochum et al. Org. Divers. Evol. 2021)

The team suspects this southern peninsula of Europe is home to so many different snail species because it served as a major refuge during the Pleistocene ice age.

The new species, Iberozospeum costulatum, has two-pronged teeth (c and d below), and they look clearly different from other local species, containing smaller but more teeth in each row.

Radula from different species for comparison with extra close-ups (right). (Jochum et al. Org. Divers. Evol. 2021)

"This 'radula' is used for grazing and sifting through the cave mud for food particles," said Jochum, explaining in the paper with colleagues that the snails likely evolved differently due to differences in the substrates of the caves they were found in, such as the density of the mud.

Research from earlier this year on the biomechanics of snail teeth supports this idea.

"The teeth of species from some habitats are significantly harder than those from others, which shows how strongly the mechanical properties of the radula correlate with the properties of the substrate and food," said University of Hamburg zoologist Wencke Krings at the time.

With more than 80,000 species of snail worldwide on land and in the water, there are probably far stranger toothed-tongues out there.

The new species was described in Organisms Diversity & Evolution.

Sauropod dinosaurs preferred warmer regions of Earth, study suggests

The findings suggest the long-necked animals may have had a different physiology from other dinosaurs.

Image: PA

GIANT SAUROPOD DINOSAURS such as Brontosaurus and Diplodocus preferred to live in warmer, more tropical regions of Earth, according to a new study.

The findings suggest the long-necked animals, thought to include the largest land animals to have ever existed, may have had a different physiology from other dinosaurs.

Researchers at UCL and the University of Vigo investigated why sauropod fossils are only found at lower latitudes, while fossils of other main dinosaur types seem to be present everywhere, with many located in the polar regions.

They analysed the fossil record across the Mesozoic era, lasting from around 230 to 66 million years ago, looking at occurrences of fossils of the three main dinosaur types.

This included sauropods, theropods – which include velociraptors and Tyrannosaurus rex – and ornithischians such as the Triceratops.

Combining this data with information about climate throughout the period, and data about how continents have moved across the globe, the researchers concluded that sauropods were restricted to warmer, drier habitats compared with other dinosaurs.

These habitats were likely to be open, semi-arid landscapes, similar to today’s savannahs.

Co-author Dr Philip Mannion, UCL Earth Sciences, said: “Our research shows that some parts of the planet always seemed to be too cold for sauropods.

“They seem to have avoided any temperatures approaching freezing.

“Other dinosaur types, in contrast, could thrive in Earth’s polar regions, from innermost Antarctica to polar Alaska – which, due to the warmer climate, were ice-free, with lush vegetation.

This suggests sauropods had different thermal requirements from other dinosaurs, relying more on their external environment to heat their bodies – slightly closer to being ‘cold-blooded’, like modern-day reptiles.

“Their grand size hints that this physiology may have been unique.”

First author Dr Alfio Alessandro Chiarenza, previously at UCL and now based at the University of Vigo, Spain, said: “It may be that sauropods were physiologically incapable of thriving in colder regions, or that they thrived less well in these areas than their dinosaurian cousins and were outcompeted.

“A mix of features may have helped sauropods shed heat more easily than mammals do today.

“Their long necks and tails would have given them a larger surface area, and they may have had a respiratory system more akin to birds, which is much more efficient.”

He added: “Sauropods’ strategies for keeping their eggs warm may also have differed from the other dinosaurs.

“Theropods probably warmed eggs by sitting on them, whereas ornithischians seem to have used heat generated by decaying plants.

“Sauropods, meanwhile, may have buried their eggs, relying on heat from the sun and the ground.”

The study found no occurrences of sauropods above a latitude of 50 degrees north – an area encompassing most of Canada, Russia, northern Europe and the UK – or below 65 degrees south, encompassing Antarctica.

But there were rich records for theropods and ornithischians living above 50 degrees north in later periods (from 145 million years ago).

The authors also suggest sauropods may have had a unique in-between physiology, closer to being cold-blooded than other dinosaur types.

The findings are published in Current Biology.

UK
Swindon couple unearth five 220,000-year-old ice-age mammoths at site near town

By Daniel Wood Facebook and Community Reporter
19th December, 2021

Sally and Neville Hollingworth with Sir David Attenborough

A Moredon couple has made one of the most extraordinary archeological finds in history when they discovered preserved fossils of mammoth in a quarry to the north of the town.

Neville and Sally Hollingworth, part-time fossil hunters, immediately realised the magnitude of their find and called in archeologists from DigVentures as reinforcements - who soon unearthed five ice-age mammoths in an extraordinary state of preservation.

The couple's find was so remarkable that David Attenborough and evolutionary biologist professor Ben Garrod will be presenting a BBC One documentary on it - Attenborough and the Mammoth Graveyard - which will air on December 30.
Neville and Sally Hollingworth

On top of the mammoths themselves - two adults, two juveniles and an infant that are thought to be 220,000 years old, they have also found giant elks, tiny creatures like dung beetles and snails and even seeds, pollen and plant fossils, as well as human tools like an axe.

Ben Garrod told the Observer: “This is one of the most important discoveries in British palaeontology.” While the odd mammoth bone often turns up, he said, finding such complete skeletons is “incredibly rare”.

“Where these mammoths lie in the ground is exactly where they died a quarter of a million years ago – next to incredible things like stone tools and the snails they trampled underfoot.

“We have evidence of what the landscape was like. We know what plants were growing there. The little things are really revealing the context of these big, iconic giants. It’s a glimpse back in time. That’s incredibly important in terms of us understanding how climate change especially impacts environments, ecosystems and species.”

Sir David Attenborough and Professor Ben Garrod

Also talking to the Observer, Lisa Westcott Wilkins of DigVentures, an archaeology social enterprise, said: “Exciting doesn’t cover it. Other mammoths have been found in the UK but not in this state of preservation. They’re in near-pristine condition. You can’t take it in.”

She added: “Archaeological sites from this period are rare, and critical for understanding Neanderthal behaviour across Britain and Europe. Why did so many mammoths die here? Could Neanderthals have killed them? What can they tell us about life in ice-age Britain? The range of evidence at this site gives us a unique chance to address these questions.”

Sally and Neville had to hand the site over to DigVentures when the magnitude of what they found became apparent, they took part in the show alongside Sir David Attenborough but are yet to see it themselves and learn the outcome of their discovery.

The programme will look at clues left by the fossiles and see if they tell us anything about how our Neanderthal ancestors lived in the harsh conditions of ice-age Britain, a period of prehistory about which little is known.

Close inspection of excavated bones Picture: DigVentures

Garrod said there are a number of theories: “Was there a massive glacial flood that washed these poor animals down? By looking at the mud, it doesn’t look like there was. It’s very uniform all the way down.

"Were they hunted by people? Were Neanderthals crouching down in the rushes and chasing them into the water? Possibly. There is definitely an association between a wonderful hand-axe and other stone tools and these bones. Did they chance upon this bunch of dead mammoths and have a mammoth buffet?

“Or was it just really muddy? With elephants today, if a juvenile gets stuck, often the adults won’t leave the site. They’ll try and help them. This is very thick mud. I’ve grown up near the seaside, near estuaries; you don’t need to be very heavy to get stuck in mud very quickly.”

DigVentures is a team of archaeologists that also runs community outreach. After raising funds from Historic England they are coordinating the dig at the site and hope to continue excavations. The quarry is currently proected by natrual flooding.

Westcott Wilkins praised the Hills Group, the quarry owners, for their co-operation: “There are also early discussions about wanting to build a public outreach centre where we can display some of the finds.”

“People are whizzing by, not realising that feet underneath their car is this scene. It’s very surreal. We’re all still trying to get our heads around what we found.”

For ordinary people this find would be once in a lifetime, but for Neville and Sally it's just another day at the office.

Neville found a preserved ice-age mammoth skull in a gravel pit at Cotswold Water Park in 2004 - only the second to be discovered in Britain.

The pair also made an incredible discovery of rare marine fossils - called crinoids - during the second lockdown at a site also near Swindon. They were recently on Blue Peter because of it

Five ice-age mammoths unearthed in Cotswolds after 220,000 years

David Attenborough will tell of ‘pristine’ skeletons found with other extinct species

Sir David Attenborough with some of the mammoth bones found in the gravel quarry near Swindon. Photograph: Julian Schwanitz/BBC/Windfall Films


Dalya Alberge
Sun 19 Dec 2021

Five ice-age mammoths in an extraordinary state of preservation have been discovered in the Cotswolds, to the astonishment of archaeologists and palaeontologists.

The extensive remains of two adults, two juveniles and an infant that roamed 200,000 years ago have been unearthed near Swindon, along with tools used by Neanderthals, who are likely to have hunted these 10-tonne beasts. More are expected to be found because only a fraction of the vast site, a gravel quarry, has been excavated.

Judging by the quality of the finds, the site is a goldmine. They range from other ice-age giants, such as elks – twice the size of their descendants today, with antlers 10ft across – to tiny creatures, notably dung beetles, which co-evolved with megafauna, using their droppings for food and shelter, and freshwater snails, just like those found today. Even seeds, pollen and plant fossils, including extinct varieties, have been preserved at this site.
An artist’s impression of the Steppe mammoth. 
Photograph: Beth Zaiken/Reuters

All these will now offer new clues into how our Neanderthal ancestors lived in the harsh conditions of ice-age Britain, a period of prehistory about which little is known. The exceptional discoveries will be explored in a BBC One documentary, Attenborough and the Mammoth Graveyard, to be aired on 30 December, in which Sir David Attenborough and evolutionary biologist Professor Ben Garrod join archaeologists from DigVentures to film the excavation.

Garrod told the Observer: “This is one of the most important discoveries in British palaeontology.” While the odd mammoth bone often turns up, he said, finding such complete skeletons is “incredibly rare”. “Where these mammoths lie in the ground is exactly where they died a quarter of a million years ago – next to incredible things like stone tools and the snails they trampled underfoot.

“We have evidence of what the landscape was like. We know what plants were growing there. The little things are really revealing the context of these big, iconic giants. It’s a glimpse back in time. That’s incredibly important in terms of us understanding how climate change especially impacts environments, ecosystems and species.”

Lisa Westcott Wilkins of DigVentures, an archaeology social enterprise, said: “Exciting doesn’t cover it. Other mammoths have been found in the UK but not in this state of preservation. They’re in near-pristine condition. You can’t take it in.”

Archaeologists excavating the mammoth bones. Photograph: DigVentures

She added: “Archaeological sites from this period are rare, and critical for understanding Neanderthal behaviour across Britain and Europe. Why did so many mammoths die here? Could Neanderthals have killed them? What can they tell us about life in ice-age Britain? The range of evidence at this site gives us a unique chance to address these questions.”

The researchers believe that the mammoth remains and the artefacts date to around 220,000 years ago, when Britain was still occupied by Neanderthals during a warmer interglacial period known as MIS7. Falling temperatures had forced Neanderthals south, and this site was then a lush, fertile plain to which both animals and humans were drawn.

The earliest mammoths came from Africa about five million years ago. This particular species, the Steppe mammoth, was the largest of them, and lasted from about 1.8m years ago to about 200,000 years ago.

Garrod, professor of evolutionary biology at the University of East Anglia, said the species weighed up to 15 tonnes, twice or three times the weight of an African elephant: “This was the largest species of mammoth ever. By the time they were about to be gone, they had dropped down to 10 tonnes, which still sounds a lot. We think that was an adaptation to the change in environment, climate and resource availability. It was becoming colder at that time, resources were getting sparser, and it drove that shrinking of the species. On top of that, there would have been undoubtedly local pressure from hunting and competition from other species.”

Speculating on why so many animals died at this site, he added: “Was there a massive glacial flood that washed these poor animals down? By looking at the mud, it doesn’t look like there was. It’s very uniform all the way down. Were they hunted by people? Were Neanderthals crouching down in the rushes and chasing them into the water? Possibly. There is definitely an association between a wonderful hand-axe and other stone tools and these bones. Did they chance upon this bunch of dead mammoths and have a mammoth buffet?

Close inspection of the excavated bones, some of which have possible butchery marks. 

“Or was it just really muddy? With elephants today, if a juvenile gets stuck, often the adults won’t leave the site. They’ll try and help them. This is very thick mud. I’ve grown up near the seaside, near estuaries; you don’t need to be very heavy to get stuck in mud very quickly.”

The excavations also revealed further evidence of Neanderthal activity on the site, including flint tools that would have been used for cleaning fresh hides. Some of the bones have possible butchery marks.

DigVentures is a team of archaeologists that specialises in public outreach. They were called in after a Neanderthal’s hand-axe was found with the initial discovery of mammoth remains by amateur fossil-hunters Sally and Neville Hollingworth.

DigVentures raised the funding from Historic England, dug the site and is coordinating the analysis and research. They hope to continue excavations once further funds have been raised. The site is now protected from fossil hunters by natural flooding.

Westcott Wilkins praised the Hills Group, the quarry owners, for allowing them as long as they need: “There are also early discussions about wanting to build a public outreach centre where we can display some of the finds.” Other finds are expected to go to the Bristol Museum.

She noted that the mammoths were barely five metres below ground level and close to a busy road: “People are whizzing by, not realising that feet underneath their car is this scene. It’s very surreal. We’re all still trying to get our heads around what we found.”

“Or was it just really muddy? With elephants today, if a juvenile gets stuck, often the adults won’t leave the site. They’ll try and help them. This is very thick mud. I’ve grown up near the seaside, near estuaries; you don’t need to be very heavy to get stuck in mud very quickly.”

The excavations also revealed further evidence of Neanderthal activity on the site, including flint tools that would have been used for cleaning fresh hides. Some of the bones have possible butchery marks.

DigVentures is a team of archaeologists that specialises in public outreach. They were called in after a Neanderthal’s hand-axe was found with the initial discovery of mammoth remains by amateur fossil-hunters Sally and Neville Hollingworth.

DigVentures raised the funding from Historic England, dug the site and is coordinating the analysis and research. They hope to continue excavations once further funds have been raised. The site is now protected from fossil hunters by natural flooding.

Westcott Wilkins praised the Hills Group, the quarry owners, for allowing them as long as they need: “There are also early discussions about wanting to build a public outreach centre where we can display some of the finds.” Other finds are expected to go to the Bristol Museum.

She noted that the mammoths were barely five metres below ground level and close to a busy road: “People are whizzing by, not realising that feet underneath their car is this scene. It’s very surreal. We’re all still trying to get our heads around what we found.”

Attenborough and the Mammoth Graveyard: Why an Ice Age discovery near Swindon has excited archaeologists

James Rampton - Friday

If you were hoping to find the remains of Ice Age beasts, you might expect to travel to Siberia, not Swindon. But that is exactly where Sally and Neville Hollingworth, two amateur archaeologists from Wiltshire, made a spectacular find.

Exploring a quarry north of the town in 2017, they spotted something sticking up out of the ground. They were astonished to find it was the fossilised humerus – a leg bone – of a Steppe mammoth, a forerunner of the more famous woolly mammoth.

Further excavation of the site revealed three more mammoths, as well as a Steppe bison and a brown bear, all perfectly preserved in the prehistoric riverbed of the Thames.

Sally Hollingworth also disinterred a rare hand axe made of flint, lying beside the remains. As the dig progressed, more handmade tools were unearthed – suggesting there was a relationship between the animals and humans.

This story – and the discoveries still emerging from the site – is the subject of an absorbing new BBC documentary, Attenborough and the Mammoth Graveyard, airing after Christmas. In this one-off film, Sir David Attenborough, who has been a passionate fossil-hunter since he was a small boy, joins the excavation and investigates the importance of the finds.

Unlike most mammoth bones, which are “merely” tens of thousands of years old, experts using state-of-the-art soil-dating technology estimate the site discovered by the Hollingworths dates back 215,000 years. These are some the oldest mammoth remains ever unearthed in the UK.

The human-made implements could also be gamechangers for our understanding of the lives and capabilities of the Neanderthals, who were supplanted soon afterwards by our own species, Homo Sapiens.

Led by Professor Ben Garrod from the University of East Anglia, the excavation prompts – and helps to answer – many fundamental questions: Why were the mammoths at this particular place? How did they meet their ends? Could the Neanderthals have killed them or was there some kind of cataclysmic event?

The Hollingworths, who both have day jobs in an office and whose house is a wondrous small museum dedicated to fossils, feel a real connection with their discovery. They even used the hand-axe to cut their wedding cake – before, Attenborough jokes, eating “a mammoth meal.” (As archaeologists might say, the old ones are the best.)

Sally Hollingworth recollects her emotions when she first picked up the hand-axe. “I had the feeling that I was the first human to touch this stone tool in thousands of years.”

Attenborough agrees. “It’s a great thrill, this whole business, isn’t it?” he says. “The finds of this remarkable site have given us a rare glimpse of early Britain, a time when humans were fully immersed in the wild, living as part of Nature.”

Garrod is equally moved by the whole venture. Sitting in the mud on the site with three colleagues, he exclaims: “Isn’t it wonderful to think that the last time someone sat exactly in this spot with a little group of people, and that stone tool in their hands as a mammoth was lying there, was 200,000 years ago? We are talking about it now hundreds of thousands of years later. It’s quite poignant, isn’t it?”

Lisa Wescott Wilkins, an archaeologist whose company DigVentures is excavating the site, reinforces the significance of the discovery by describing her own joy when she first visited the quarry north of Swindon two years ago.

“I can remember the feeling of stepping onto the site for the first time very, very clearly because it’s something that I had never expected to experience in my career as an archaeologist,” she tells i. “Just seeing a mammoth tusk in the ground, and knowing what had been found close to it, and feeling the potential of the site – it was heart-stopping. I’m still buzzing really!”

Wescott Wilkins’ excitement was heightened when she and three colleagues helped lift an exceedingly heavy one-and-a-half-metre long mammoth tusk from the site. “If someone asks me how much it weighs, I’ll just have to say, ‘Well, it’s four-people’s worth!’”

The archaeologist is particularly pleased by the discovery of the flint hand-axe, “because what that might be showing is the actual interaction of the Neanderthals with the mammoths. We have bones that look to the naked eye like they’ve got cut marks on them. If they do, that is a smoking gun for this time period. It means the mammoths could have been either hunted or scavenged.

“The bones are in such amazing condition. They haven’t been knocked around. They are exactly where they fell. Also, the tools are still so sharp, you could use them today. So this is really indicating that an episode happened here. Such evidence has never been found before. My heart speeds up even thinking about it!”

Wescott Wilkins adds that “archaeology is so exciting because it gives you that sense of touching something that is bigger than yourself, and that really applies to this site. It’s very, very special. As an archaeologist, you can never know everything – and what fires me up about this site are all the amazing new things I’m learning. That is a fantastic reason to get out of bed every morning.”

Although prehistoric, this site also tells a very pertinent, up-to-the-minute story about climate change. The Neanderthals had to adapt rapidly as temperatures dropped steeply during the Ice Age.

“The Neanderthals were having to deal with changes in the landscape that were beyond their control,” says Wescott Wilkins. “Weather events would have affected the environment and the amount of food that they could find.

“All that was happening around them and they had to cope with it. Looking at the impact of climate change on this Neanderthal population, it’s definitely a cautionary tale about how far it can change the way we live.”

Attenborough echoes those sentiments: “It is thought that Neanderthals may have been around for some 400,000 years. Their survival relied on their instinctive understanding of the natural world. Whether our own species can thrive for quite as long remains to be seen.”

But we leave the last word to the woman without whom none of these extraordinary advances in our understanding of prehistory would have been possible. How would Sally Hollingworth sum up this venture? “It’s like a time travel through the gravel.”

Attenborough and the Mammoth Graveyard, BBC1, Thursday 30 December, 8pm


Daniel Yergin: Why the energy transition will be so complicated

The degree to which the world depends on oil and gas is not well understood

Publishing date:Dec 14, 2021 • 
Wind turbines operate at the West Coast One wind farm near Vredenburg, South Africa, on Oct. 6, 2021. 
PHOTO BY DWAYNE SENIOR/BLOOMBERG FILES

To appreciate the complexities of the competing demands between climate action and the continued need for energy, consider the story of an award — one that the recipient very much did not want and, indeed, did not bother to pick up.

It began when Innovex Downhole Solutions, a Texas-based company that provides technical services to the oil and gas industry, ordered 400 jackets from North Face with its corporate logo.

But the iconic outdoor-clothing company refused to fulfill the order. North Face describes itself as a “politically aware” brand that will not share its logo with companies that are in “tobacco, sex (including gentlemen’s clubs) and pornography.”

And as far as North Face is concerned, the oil and gas industry fell into that same category — providing jackets to a company in that industry would go against its values. Such a sale would, it said, be counter to its “goals and commitments surrounding sustainability and environmental protection,” which includes a plan to use increasing amounts of recycled and renewable materials in its garments in future years.

But, as it turns out, North Face’s business depends not only on people who like the outdoors, but also on oil and gas: At least 90 percent of the materials in its jackets are made from petrochemicals derived from oil and natural gas. Moreover, many of its jackets and the materials that go into them are made in countries such as China, Vietnam, and Bangladesh, and then shipped to the United States in vessels that are powered by oil. To muddy matters further, not long before North Face rejected the request, its corporate owner had built a new hangar at a Denver airport for its corporate jets, all of which run on jet fuel.

To spotlight the obvious contradiction, the Colorado Oil and Gas Association presented its first ever Customer Appreciation Award to North Face for being “an extraordinary oil and gas customer.” That’s the award North Face spurned.

A pedestrian carries a North Face shopping bag in the SoHo neighbourhood of New York on Oct. 24, 2021. 
PHOTO BY NINA WESTERVELT/BLOOMBERG FILES

Different people will draw different conclusions from this episode. Central to the response to climate change is the transition from carbon fuels to renewables and hydrogen, augmented by carbon capture. This was highlighted at the historic COP26 climate conference in Glasgow, Scotland, which emphasized the need for urgency and a greater ambition on climate backed by a host of significant initiatives, including carbon markets, and country pledges of carbon neutrality by 2050 or a decade or two thereafter. The North Face story, however, offers a difficult reminder that the energy transition is a whole lot more complicated than may be recognized.

As if to remind us of the complexities, a most unwelcome guest appeared on the doorstep of the Glasgow conference: an energy crisis that has gripped Europe and Asia. Energy crises traditionally begin with oil, but this recent one has been driven by shortages of coal and liquefied natural gas (LNG). That sent prices spiking, disrupting electricity supplies in China, which then led to the rationing of electricity there, the closing of factories, and further disruptions of the supply chains that send goods to America.

In Europe, the energy shortages were made worse by low wind speeds in the North Sea, which for a time drastically reduced the electricity produced by offshore wind turbines for Britain and Northern Europe. Gas, coal, and power prices shot up — as much as seven times in the case of LNG. Factories, unable to afford the suddenly high energy costs, stopped production, among them plants in Britain and Europe making fertilizers needed for next spring’s agricultural season.

Trailing the other fuels, oil prices reached the US$80 range. With a tightening balance between supply and demand, some were warning that oil could exceed US$100 a barrel. Gasoline prices have hit levels in the United States that alarm politicians, who know that such increases are bad for incumbents. That — along with worsening inflation — is why the Biden administration asked Saudi Arabia and Russia to put more oil into the market, so far to no avail. The administration then announced, on the eve of Thanksgiving, the largest-ever release of oil from the U.S. government’s strategic petroleum reserve, in coordination with other countries, to temper prices.

Energy shock


An electricity pylon in front of a cooling tower at Uniper SE’s coal-fired power station in Ratcliffe-on-Soar, U.K., Dec. 2, 2021.
 PHOTO BY CHRIS RATCLIFFE/BLOOMBERG FILES

Is this energy shock a one-off resulting from a unique conjunction of circumstances? Or is it the first of what will be several crises resulting from straining too hard to bring 2050 carbon-reduction goals rapidly forward — potentially prematurely choking off investment in hydrocarbons, thus triggering future shocks? If it’s a onetime event, then the world will move on in a few months. But if it is followed by further energy shortages, governments could be forced to rethink the timing and approach to their climate goals. The current shock offered just such an example: Although Britain is calling for an end to coal, it was nevertheless forced to restart a mothballed coal-powered plant to help make up for the electricity shortage.

Jean Pisani-Ferry, a French economist and sometime adviser to French President Emmanuel Macron, is among the most prominent voices pointing to the consequences that could result from trying to move too fast. In August, before the current energy crisis began, he warned that going into overdrive on transitioning away from fossil fuels would lead to major economic shocks similar to the oil crises that rocked the global economy in the 1970s. “Policymakers,” he wrote, “should get ready for tough choices.”

The term energy transition somehow sounds like it is a well-lubricated slide from one reality to another. In fact, it will be far more complex: Throughout history, energy transitions have been difficult, and this one is even more challenging than any previous shift. In my book The New Map, I peg the beginning of the first energy transition to January 1709, when an English metalworker named Abraham Darby figured out that he could make better iron by using coal rather than wood for heat. But that first transition was hardly swift. The 19th century is known as the “century of coal,” but, as the technology scholar Vaclav Smil has noted, not until the beginning of the 20th century did coal actually overtake wood as the world’s No. 1 energy source. Moreover, past energy transitions have also been “energy additions”—one source atop another. Oil, discovered in 1859, did not surpass coal as the world’s primary energy source until the 1960s, yet today the world uses almost three times as much coal as it did in the ’60s.

The coming energy transition is meant to be totally different. Rather than an energy addition, it is supposed to be an almost complete switch from the energy basis of today’s $86 trillion world economy, which gets 80 percent of its energy from hydrocarbons. In its place is intended to be a net-carbon-free energy system, albeit one with carbon capture, for what could be a $185 trillion economy in 2050. To do that in less than 30 years — and accomplish much of the change in the next nine — is a very tall order.

Here is where the complexities become clear. Beyond outerwear, the degree to which the world depends on oil and gas is often not understood. It’s not just a matter of shifting from gasoline-powered cars to electric ones, which themselves, by the way, are about 20 percent plastic. It’s about shifting away from all the other ways we use plastics and other oil and gas derivatives. Plastics are used in wind towers and solar panels, and oil is necessary to lubricate wind turbines. The casing of your cellphone is plastic, and the frames of your glasses likely are too, as well as many of the tools in a hospital operating room. The air frames of the Boeing 787, Airbus A350, and F-35 Joint Strike Fighter jet are all made out of high-strength, petroleum-derived carbon fibre. The number of passenger planes is expected to double in the next two decades. They are also unlikely to fly on batteries.

Oil products have been crucial for dealing with the pandemic too, from protective gear for emergency staff to the lipids that are part of the Pfizer and Moderna vaccines. Have a headache? Acetaminophen—including such brands as Tylenol and Panadol—is a petroleum-derived product. In other words, oil and natural-gas products are deeply embedded throughout modern life.

Existential question

Dharmendra Pradhan, India’s former oil minister and now minister of education, during the 6th OPEC International Seminar in Vienna, Austria, on June 3, 2015. 
PHOTO BY LISI NIESNER/BLOOMBERG FILES

There’s another complexity beyond the technical challenge. Call it a new “North–South divide.” The original divide emerged as an economic struggle in the 1970s between the developed countries of the Northern Hemisphere and the developing countries (and former colonies) of the Southern Hemisphere. That was the decade when OPEC burst onto the global scene, with the price of oil very much at the centre of the battle. The rancor of that divide was reduced over time with the advance of globalization, the rise of emerging markets, and increased economic integration.

A different divide is beginning to develop today around differing perspectives on how to tackle climate change. It once again pits the developed world against developing countries, but the contours are different. For the developed world, as Glasgow demonstrated, climate is an overwhelming imperative — often described by political leaders as the “existential” question. While also deeply concerned about climate, developing countries face other existential questions as well. In addition to climate, they struggle with recovering from COVID-19, reducing poverty, promoting economic growth, improving health, and maintaining social stability.

For India, it’s a question of “energy transitions” — plural — which reflects the fact that its per capita income is only one-tenth that of the United States. Prime Minister Narendra Modi’s government has announced very ambitious goals for wind, solar, and hydrogen, and has set a net-zero target for 2070. Yet at the same time, it has said it will continue to use hydrocarbons to achieve its immediate priorities. As the government put it in an official report, “Energy is the mainstay of the development process of any country.”

Mixing all exploitable energy resources is the only feasible way forward in our context
DHARMENDRA PRADHAN

“Our energy requirements are vast and robust. Mixing all exploitable energy resources is the only feasible way forward in our context,” Dharmendra Pradhan, until recently the minister of petroleum and natural gas and now the minister of education, told me. “India will pursue the energy transition in our own way.”

So while the European Union debates whether natural gas has any appropriate role in its own future energy program, India is building a US$60 billion natural-gas infrastructure system to reduce its reliance on coal, thereby reducing stifling pollution for its urban population and bringing down carbon-dioxide emissions. It is also delivering propane to villagers so that they don’t have to cook with wood and waste any longer, and suffer resulting illnesses and premature death from indoor air pollution.

A similar point was made by Nigeria’s vice president, Yemi Osinbajo, when I spoke with him this year. “The term energy transition itself is a curious one,” he began. “We sometimes tend to focus on one element of the transition. But in fact, that energy transition itself is multidimensional” and must take “into account the different realities of various economies and accommodat[e] various pathways to net zero.”

Osinbajo is particularly worried about European banks and international financial institutions “banning” the financing of hydrocarbon development, especially natural gas, owing to climate concerns. “Limiting the development of gas projects poses big challenges for African nations, while they would make an insignificant dent in global emissions,” he said. Natural gas and natural gas liquids, he continued, are “already replacing the huge amounts of charcoal and kerosene cookstoves that are most widely used for cooking, and thus saving millions of lives otherwise lost to indoor air pollution annually.”

Aissatou Sophie Gladima, the energy minister of Senegal, put it more pithily: Restricting lending for oil and gas development, she said, “is like removing the ladder and asking us to jump or fly.”

Moreover, a number of energy-producing developing countries depend on exports of oil and gas for their budgets and social spending. It is not obvious what would replace those revenues. In October, a top U.S. government official warned American companies of “regulatory actions” and other potential penalties if they made new investments in African oil and gas resources. Yet there’s no ready alternative for Nigeria, with a population of more than 200 million and a per capita income that’s one-12th of the United States’, and which depends on oil and gas exports for 70 percent of its budget and 40 percent of its GDP.

“Africa did not cause climate change, and its role in emissions is very small,” says Hakeem Belo-Osagie, a senior lecturer at Harvard Business School focusing on the business and economy of Africa. “Covid has wrecked [the] finances of many African countries, and African countries cannot be expected to cut fossil-fuel production, as it is essential to the finances of several African countries.”

Will a new North–South divide lead to a fracturing in global policies? For an early indicator, look at what happens in the next two years on global trade. The growth of trade and the opportunities it presented to developing countries have done much to ease the original divide. But signs of the new tensions are certainly there.

Europe is moving to establish a “carbon border adjustment mechanism,” which is a complicated name for what is essentially a carbon tariff. It will be assessed according to “carbon intensity” — that is, the amount of carbon expended in making a product. Europe sees these tariffs as a way to ensure that its policies and values on climate change are adopted globally, while providing protection to European industries that face higher costs because of carbon pricing. The EU is starting with tariffs on a limited number of goods but is expected to expand the list. The Biden administration is also mulling carbon tariffs. Yet developing countries regard the moves as discriminatory and an effort to impose Europe’s policies on them.

The 2015 Paris climate conference established the “what” — the goal of carbon neutrality. COP26 in Glasgow resulted in major steps forward on the “how” — achieving the goal. But when it comes to the energy transition itself, we may still have much to learn about the complexities that lie ahead.

Daniel Yergin, vice chairman of IHS Markit, is a Pulitzer Prize winning author. His latest book is “The New Map: Energy, Climate, and the Clash of Nations.”

Copyright: Daniel Yergin. Originally published by The Atlantic.