Thursday, July 06, 2023

From dragons to dinosaurs: How people interpreted fossils throughout history

People discovered prehistoric fossils long before Charles Darwin published "On the Origin of Species." The remains of these unknown creatures often puzzled their discoverers.

Credit: Kröller-Müller Museum / Wikimedia Commons

KEY TAKEAWAYS

In the past, dinosaur fossils have been mistaken for Cyclopes, dragons, and giants.
 
Without an understanding of evolution, extinction, or deep time, it was difficult to determine what fossils were or where they came from.
 
Ultimately, these fossils discovers and the ensuing misinterpretations paved the way for the birth of paleontology.

Tim Brinkhof

THE PAST — JULY 5, 2023


In 1676, the British naturalist Robert Plot completed a book titled The Natural History of Oxfordshire. Addressed to King Charles II, it contains information on the flora, fauna, geology, and culture of the author’s hometown. In a chapter devoted to stones, Plot shares an illustration of one specimen in “the figure of the lowermost part of the thigh-bone.” It clearly belonged to an animal, but which one? It was too large for a horse or an ox, yet too small for an elephant. His final guess: a giant.

Looking over The Natural History of Oxfordshire a century later, Richard Brookes, another naturalist, copied Plot’s untitled drawing of the bone and labeled it Scrotum humanum. Although Brookes understood that its resemblance to a pair of testicles was superficial, the naming helped perpetuate the belief that it came from some kind of humanoid. It would take another century or two for the bone, now lost, to be recognized for what it probably was: a dinosaur femur.



  
Scrotum humanum. 
(Credit: Biodiversity Heritage Library / Wikimedia Commons)

Of course, Plot was far from the only person to come into contact with a fossil before concepts like evolution, extinction, and deep time were formulated, let alone commonly accepted. During much of human history, the origins of fossils — not to mention the Earth itself — were not explained through scientific inquiry and evidence but by myth, superstition, and organized religion. And those led to some pretty imaginative interpretations.
Early fossil discoveries

Many animal skeletons look nothing like their living counterparts. Case in point: the elephant. Experts will readily identify the gaping hole in the center of their skulls as the place where their trunk muscles attach. But to anyone unversed in proboscidean anatomy, these skulls look less like elephants and more like the fearsome, one-eyed Cyclops described in Homer’s Odyssey.

Coincidence? Paleontologists like Adrienne Mayor, author of The First Fossil Hunters: Paleontology in Greek and Roman Times, think not. Members of the elephant’s extended evolutionary family, such as 13-foot-tall Deinotherium giganteum, roamed Greece between the Middle Miocene and Early Pliocene. Some paleontologists argue there is a strong possibility that their alien-looking remains inspired the appearance of one of world mythology’s most iconic monsters.

A similar argument has been applied to China, where long-necked sauropod fossils, like the ones found in Qijiang City in 2015, could have provided the foundation for age-old stories about dragons. Again, not implausible. The country is home to some of the largest sauropods ever discovered, and to this day, pieces of their skeletons are passed off as “dragon bones” and sold in villages across Southeast Asia for their supposed medicinal powers

.
An elephant skull. (Credit: Lawanga Ranwala / Wikimedia Commons)

Conversely, fossils found in medieval and early modern Europe were often interpreted through a Christian lens. In the 18th century, a well-respected Swiss physician named Johann Jakob Scheuchzer stumbled across what ultimately proved to be the bones of a giant salamander. He published an extensive treatise in which he described the fossilized remains as Homo diluvvi testis (or “the man who witnessed the flood”) and proclaimed it to be evidence of ancient humans who lived at the same time as the Biblical Noah.

When dinosaur fossils weren’t being identified as unicorns or sea serpents — two other infamous interpretations — they were mistaken for the remains of extant animals. While on his expedition through the lands acquired in the Louisiana Purchase, U.S. explorer and politician Meriwether Lewis found what he described as the rib of an enormous fish, but which subsequent observers attributed to a dinosaur. Years later, Gideon Mantell, a British paleontologist, mistook the conical tooth of a Spinosaurus for that of a large crocodile.
The evolution of paleontology

While it’s tempting to dismiss these early interpretations as ignorant, it’s also unfair. Plot and others interpreted the evidence based on their knowledge of natural history. Fossils weren’t recognized as extinct creatures because the idea that a species could disappear completely hadn’t been seriously considered yet. Nor were they recognized as prehistoric because, as Riley Black puts it in an article for Smithsonian Magazine, Biblical chronologies left no room for deep time.

Just as science cycled through alchemy before it arrived at chemistry, so too did these early misinterpretations pave the way for the emergence of paleontology. Back in the 16th century, the term fossil referred to pretty much anything that was dug up from the ground. This meant plant and animal remains were placed in the same category as minerals and meteorites (hence why Plot discusses his bone in a chapter devoted to stones instead of animals).

“The primary problem at this period,” the historian Martin J. S. Rudwick explains in an article, “was not to decide whether or not fossils (in the modern sense) were organic in origin, but to understand why such diverse objects were all ‘stony’ in composition.” This debate was reframed in 1667 by the Danish medical scholar Nicolas Steno, who made a clear distinction between stones that were organic in origin (such as fossils) and stones that weren’t (such as crystals).



A mosasaurus skeleton (Credit: Ghedoghedo / Wikimedia Commons)

Steno stopped short of accurately assessing the age of fossils in addition to their natural composition. Like everyone else, he assumed that the world was only a few thousand years old and that the marine fossils he’d found on dry land had been deposited there by the Great Flood. “A long prehuman history,” writes Rudwick, “was generally unthinkable, not because it might have seemed to conflict with the Bible […] but because it would have seemed to leave that history without meaning or significance.”

The next step was taken by the French naturalist Georges Cuvier, who in 1808 became the first person to accurately identify a mosasaur fossil as belonging to a giant marine reptile that had not only gone extinct but lived long, long before the commonly accepted birthday of the Earth. Cuvier’s studies on meaningful designs and adaptations of skeletons not only appeased his religious contemporaries. It also constituted the final leg of the journey that takes us from Plot to Darwin, from dragons to dinosaurs.

 

Discovery of 500-million-year-old fossil reveals astonishing secrets of tunicate origins

Discovery of 500-million-year-old fossil reveals astonishing secrets of tunicate origins
Artistic reconstruction of Megasiphon thylakos, a benthic organism that lived directly on the seafloor. M. thylakos was also sessile (non-moving) and spent its time filter feeding using its prominent siphons. Also reconstructed in the vicinity are other species commonly found in the Marjum Formation, the site from which M. thyalkos was discovered. Nearby brachiopods (bottom center) and the spiny sponge Choia (center middle) are common in many Cambrian environments. In the background is the hemichordate Oesia, which lived in perforated tubes. Credit: Original artwork by Franz Anthony

Karma Nanglu says his favorite animal is whichever one he's working on. But his latest subject may hold first place status for a while: a 500-million-year-old fossil from the wonderfully weird group of marine invertebrates, the tunicates.

"This animal is as exciting a discovery as some of the stuff I found when hanging off a cliffside of a mountain, or jumping out of a helicopter. It's just as cool," said Nanglu, postdoctoral researcher in the Department of Organismic and Evolutionary Biology at Harvard University.

In a new study in Nature Communications, Nanglu and co-authors describe the new fossil, named Megasiphon thylakos, revealing that ancestral tunicates lived as stationary, filter-feeding adults and likely underwent metamorphosis from a tadpole-like larva.

Tunicates are truly strange creatures that come in all shapes and sizes with a wide variety of lifestyles. An adult tunicate's basic shape is typically barrel-like with two siphons projecting from its body. One of the siphons draws in water with  through suction, allowing the animal to feed using an internal basket-like filter device. After the animal feeds, the other siphon expels the water.

There are two main tunicate lineages, ascidiaceans (often called "sea squirts") and appendicularias. Most ascidiaceans begin their lives looking like a tadpole and mobile, then metamorph into a barrel shaped adult with two siphons. They live their adult life attached to the seafloor. In contrast, appendicularians retain the look of a tadpole as they grow to adults and swim freely in the upper waters.

"This idea that they begin as tadpole-looking larva that, when ready to develop, basically headbutts a rock, sticks to it, and begins to metamorphosis by reabsorbing its own tail to transform into this being with two siphons is just awe-inspiring," sais Nanglu.

Discovery of 500-million-year-old fossil reveals astonishing secrets of tunicate origins
Comparisons between the new Cambrian tunicate Megasiphon thylakos (a,b) with some
 modern tunicates (c,d,e). In particular, M. thylakos shares the rounded vase or barrel-like
 body and prominent pair of siphons of the modern ascidiacean tunicates. Given the fact
 that M. thylakos is half-a-billion years old, this suggests that ancestrally, tunicates lived 
much like modern ascidiaceans: they had a non-moving adult form with siphons for filter 
feeding, a body plan that was arrived at after metamorphosing from a tadpole-like juvenile. 
The modern species represented are c: Ciona, d: Ascidiella, e: Molgula. 
Credit: Rudy Lerosey-Aubril (a,b) and Karma Nanglu (c,d,e)

Interestingly, tunicates are the closest relatives of vertebrates, which includes fish, mammals, and even humans. How this odd-looking creature could be related to vertebrates is hard to imagine were it not for that tadpole beginning. Tunicate's close relationship to vertebrates makes studying them critical for understanding our own evolutionary origins. Unfortunately, it's not easy to do as tunicates are almost completely absent from the entire fossil record, with only a handful of fossils appearing convincingly as members of the group.

With so few fossils, scientists relied mainly on what could be learned from modern tunicate species. Because no one knew the morphology and ecology of the last common ancestor of the tunicates, scientists could only hypothesize that it was either a benthic animal with two siphons, like the ascidiaceans, or a free-swimming animal like the appendicularians.

M. thylakos had all the basic hallmarks of an ascidiacean tunicate, a barrel-shaped body and two prominent siphon-like growths. But the feature that stood out to the team was the dark bands running up and down the fossil's body.

High powered images of M. thylakos allowed the researchers to conduct a side-by-side comparison to a modern ascidiacean. The researchers used dissected sections of the modern tunicate Ciona to identify the nature of Megasiphon's dark bands. The comparisons revealed remarkable similarities between Ciona's muscles, which allow the tunicate to open and close its siphons, and the dark bands observed in the 500-million-year-old fossil.

"Megasiphon's morphology suggests to us that the ancestral lifestyle of tunicates involved a non-moving adult that filter fed with its large siphons," said Nanglu. "It's so rare to find not just a tunicate fossil, but one that provides a unique and unparalleled view into the early evolutionary origins of this enigmatic group."

M. thylakos is the only definitive tunicate fossil with soft tissue preservation that has been discovered to date. It is the oldest of its kind originating from the middle Cambrian Marjum Formation in Utah. The fossil was recognized as a tunicate by co-authors research associate, Rudy Lerosey-Aubril, and Professor Javier Ortega-Hernández (both in the Department of Organismic and Evolutionary Biology) while visiting the Utah Museum of Natural History (UMNH) in 2019.

Discovery of 500-million-year-old fossil reveals astonishing secrets of tunicate origins
Details of the anatomy of Megasiphon thylakos. M. thylakos had two prominent siphons 
and a barrel shaped body. It also had prominent longitudinal muscles running from the tips
 of the siphons to the base of the body. These are comparable with modern tunicates, 
including Ciona intestinalis, which is dissected in c and f. Even the micrometer sized 
individual muscle fibers can be compared between this 500-million year old fossil and 
modern tunicates. 
Credit: James Wheeler (a,d) and Karma Nanglu (b,c,e,f,g)

"The fossil immediately caught our attention," said Ortega-Hernández, "although we mostly work on Cambrian arthropods, such as trilobites and their soft bodied relatives, the close morphological similarity of Megasiphon with modern tunicates was simply too striking to overlook, and we immediately knew that the fossil would have an interesting story to tell."

Fossils from the Marjum Formation date from shortly after the Cambrian Explosion, one of the most significant evolutionary events in Earth's history which occurred approximately 538 million years ago. During this time the most major animal groups appeared in the fossil record for the first time radically changing marine ecosystems. Tunicates, however, are noticeably absent in Cambrian rocks even though they are diverse and abundant in modern oceans.

There are many Cambrian fossil sites with exceptional preservation in the United States, but these are often overlooked compared to those from the Burgess Shale in Canada and Chengjiang in China. "The discovery of Megasiphon perfectly illustrates why Javier and I have been conducting fieldwork in Utah for the last ten years," said Lerosey-Aubril. "The Marjum strata has all of our attention right now as we know that it preserves fossils of animal groups, such as tunicates or comb jellies, that are almost entirely absent from the Cambrian fossil record."

Molecular clock estimates suggest that ascidiaceans originated 450 million years ago. However, at 500 million years old, M. thylakos provides the clearest view into the anatomy of ancient tunicates and their earliest evolutionary history. Significantly, M. thylakos provides evidence that most of the modern body plan of tunicates was already established soon after the Cambrian Explosion.

"Given the exceptional quality of preservation and the age of the fossil, we can actually say quite a bit about the evolutionary history of the tunicates," said Nanglu. "This is an incredible find as we had virtually no conclusive evidence for the ancestral modes of life for this group before this."

After collecting hundreds of new fossils again this spring, the researchers are convinced the Marjum Formation has only started to reveal its secrets.

More information: A mid-Cambrian tunicate and the deep origin of the ascidiacean body plan, Nature Communications (2023). DOI: 10.1038/s41467-023-39012-4

Journal information: Nature Communications


Provided by Harvard University, Department of Organismic and Evolutionary Biology


Important genetic origin of our senses identified



I thought fossil fuel firms could change. I was wrong

Their unprecedented profits over the past year have shown their unwillingness to adapt. It’s now D-Day for them.


Christiana Figueres
Opinions|Climate Crisis
Published On 6 Jul 2023

A flare burning excess methane, or natural gas, from crude oil production is seen at a well pad in Watford City, North Dakota, in August 2021 [Matthew Brown/AP Photo]

More than most members of the climate community, I have for years held space for the oil and gas industry to finally wake up and stand up to its critical responsibility in history.

I have done so because I was convinced the global economy could not be decarbonised without their constructive participation and I was therefore willing to support the transformation of their business model.

But what the industry is doing with its unprecedented profits over the past 12 months has changed my mind.

Let’s remember what the industry could and should be doing with those trillions of dollars: stepping away from any new oil and gas exploration, investing heavily into renewable energies and accelerating carbon capture and storage technologies to clean up existing fossil fuel use. Also, cutting methane emissions from the entire production line, abating emissions along their value chain and facilitating access to renewable energy for those still without electricity who number in their millions.

Instead, what we see is international oil companies cutting back, slowing down or, at best, painfully maintaining their decarbonisation commitments, paying higher dividends to shareholders, buying back more shares and – in some countries – lobbying governments to reverse clean energy policies while paying lip service to change.

On top of that, the industry as a whole is making plans to explore new sources of polluting fossil fuels and, in the United States, intimidating stakeholders who have been moving towards environmental, social and governance responsibility.

Of course, there are some exceptions to these sweeping generalisations, but the trend is clear. What are the leaders of the fossil industry thinking? As we evolve the global economy, we have one way forward: decarbonise quickly enough to avert the worst of climate impacts, especially the impacts upon the most vulnerable.

When asked about their irresponsible decisions, executives often cite some version of the prisoner’s dilemma, showing unwillingness to step out of the pack and lead the way forward in fear of diminishing their gains vis a vis their peers. They occasionally also cite their own version of climate justice, which is that less fossil fuel energy produced would mean more expensive energy, including for the poorest.

What they seem to have forgotten is that we are way beyond strategy games. Let’s get real. We have reached the point where decarbonisation will happen with the fossil fuel industry or without them.

As a recent Rocky Mountain Institute report points out, renewables are simply a superior technology.

“The energy transition is a shift from a concentrated, expensive, polluting commodity-based system with no learning curve, to an efficient, manufactured, technology-driven system that offers continuously falling costs and is available everywhere,” the report argues. “It is moving from heavy, fiery molecules to light, obedient electrons; from hunting fossil fuels to farming the sun.”

According to the International Energy Agency (IEA), the world will add a record 440GW of new renewable capacity this year.  That is more than double what we added in 2019, double what the IEA predicted in 2020, and 24 percent more than the IEA foresaw just six months ago.

Exponential growth of renewables is the new reality. Today, for every $1 invested in fossil fuels, $1.7 is going to clean energy. This year, the world will invest more than $1.7 trillion into clean energy.

Despite growth in energy generation worldwide, greenhouse gas emissions from the power sector will fall for the first time this year. That is in part due to demand for fossil fuel energy already having peaked, and renewables eating into the energy market share. This year, for the first time, solar will attract more capital than oil production.

At the same time, consumers are benefitting from enormous savings. In the European Union alone, newly installed wind and solar saved consumers 100 billion euros ($108bn) between 2021 and 2023, and it has helped keep the price of wholesale electricity prices down.

The fossil fuel industry is facing decline, no matter what. It is D-Day for them.

The powerful state-owned companies as well as international firms have to decide whether they transition to the energies of the 21st century and thereby accelerate the exponential curve of the energy transition, or if their flame dies out while they remain blind and in pernicious resistance.

Do they want to gain some public license (if any is left for them) by speeding the winds of change or do they want to be the last men standing? If they choose the latter, the transition to clean energies will occur despite them, but it will likely be too late for humanity. The fossil fuel industry will have powered human development in the 20th century and then destroyed it in the 21st.

Their moment to decide is now.

The views expressed in this article are the author’s own and do not necessarily reflect Al Jazeera’s editorial stance.


U.S. Greenlights Major Offshore Wind Project

The U.S. Bureau of Ocean Energy Management has approved a large-scale offshore wind power project that it says would power more than 380,000 homes and “create more than 3,000 good-paying jobs.”

The Ocean Wind 1 project, to be located off the coast of New Jersey, will have a capacity of 1.1 GW. It is part of a broader plan by the Biden administration to build 30 GW of offshore wind power capacity by 2030.

The Ocean Wind 1 project will be led by Danish turbine major Ørsted, which recently revealed plans to invest some $68 billion in building 50 GW of new capacity by 2030.

The Danish company at the same time complained about “soaring costs” which prompted the company to ask for more subsidies from the UK government for its biggest project to date, the 3-GW Hornsea 3 installation.

“If a project which is by far the biggest in the world, with all these opportunities, can only become investable after having worked intensively for a year with everything, it’s hopefully also a stark reminder to the British government that something must change,” Ørsted’s chief executive Mads Nipper said in June.

In the United States, there is plenty of government support for wind and solar power from the Inflation Reduction Act. Yet even there, Ørsted is facing challenges related to costs.

In a recent report by Reuters, the company was said to consider reconfiguring the Ocean Wind 2 project, after being quoted as declaring reconfigurations and potential project exits would be its response to uncertain profitability.

"The project's approval demonstrates the federal government's commitment to developing clean energy and fighting climate change and is a testament to the state of New Jersey's leadership in supporting sustainable sources of energy and economic development for coastal communities," the director of the Bureau of Ocean Energy Management, Elizabeth Klein, said in comments on the news about Ocean Winds 1.

By Irina Slav for Oilprice.com

MANITOBA
Hydro closes Keeyask generating station after huge ‘peat island’ floats into it

Winnipeg Free Press
Wednesday, Jul. 5, 2023

A massive debris blockage that prompted the shutdown of all seven units of Manitoba Hydro’s Keeyask generating station cost the public power company nearly $350,000 a day in lost revenue, internal documents show.

A June 16 briefing by the Crown corporation’s water resources engineering department, which was obtained by the Free Press, shows the problem began on May 16 when a “large peat island” washed up against the northern generating station’s power house.

Satellite images show a mass of debris — described by a Hydro spokesman as “the size of a football field” — butting into Manitoba’s newest hydroelectric station, which became fully operational with seven generating units in March 2022.


Supplied
Boats trying to remove the massive peat island that prompted the shutdown of Manitoba Hydro’s Keeyask generating station.

The 695-megawatt station is 725 kilometres northeast of Winnipeg on the lower Nelson River.

Neither the union that represents generating station employees, nor Manitoba Hydro’s communications director, could recall a time when a buildup of debris prompted the total shutdown of a power station.

“I don’t think it’s happened before,” said Mike Espenell, business manager for International Brotherhood of Electrical Workers Local 2034.

“This would’ve been a pretty visible mass floating down the river. It obviously should have been dealt with in a lot more timely way than it was dealt with.”

Two days after the peat island hit Keeyask, workers in 18 boats tried, unsuccessfully, to move the island away from the generating station, said Scott Powell, Hydro’s communications director.

“They were making progress and then the wind turned,” he said Wednesday. By May 26, equipment was in place to begin “clamming” or scooping up the peat and debris — that was partly frozen and starting to melt — and removing it, he said.

Removal of the surface debris continued from June 2 to 15, but it became clear the clog was deeper and more needed to be done, as the power produced by the generating station’s seven units decreased.

To avoid the risk of damaging the $8.7-billion station, Manitoba Hydro decided to shut down all seven units on June 15, at an estimated cost of $10 million per month, or nearly $350,000 a day, in lost revenue.

On Wednesday, Powell said the “peat island” has been removed and five of Keeyask’s seven units are back in operation. The cleanup continues, however, with divers called in to clean the “trash racks” — the strainers that catch debris before it enters the units.


“This would’ve been a pretty visible mass floating down the river. It obviously should have been dealt with in a lot more timely way than it was dealt with.”–Mike Espenell

He said he wasn’t able to give an estimate Wednesday of the revenue lost during the shut down. “Obviously there’s some impact,” he said.

It’s not a “massive percentage” of Manitoba Hydro revenue — which was just over $3 billion in the 2021-22 fiscal year.

The publicly owned power utility budgets for shutdowns and maintenance, and the arrival of the “peat island” gumming up the works “was not unforeseen as a potential impact,” given the type of terrain in the area, Powell said.

“It’s just bigger than anyone anticipated.” Hydro will continue to monitor the situation, he said. He denied that any actions, including increased staffing, could’ve been taken to prevent it from happening.

The engineering report — which Powell said he hadn’t seen — recommends a debris-mitigation plan, that includes a debris boom and dedicated equipment, be formalized to “prevent future events.”

The business manager for the union, which has been in a labour dispute with Manitoba Hydro since Friday after rejecting the latest contract offer, alleged the shutdown was preventable.

“I think it’s probably a function of not properly maintaining and monitoring the generating station,” said Espenell.

“There is very minimal staffing levels, which is crazy when you consider you’ve got a billions-of-dollars facility and you’re worried about having an extra member or two staff it,” said the IBEW representative.

“There is very minimal staffing levels, which is crazy when you consider you’ve got a billions-of-dollars facility and you’re worried about having an extra member or two staff it.”–Mike Espenell

It is operated by Manitoba Hydro and owned jointly by it and four Manitoba First Nations: Tataskweyak Cree Nation, War Lake First Nation, York Factory First Nation, and Fox Lake Cree Nation.

More than 2,000 Manitoba Hydro employees, including those who work at northern generating stations and repair transmission lines, have restricted standby and call-out work schedules, and capped overtime hours since Friday after giving Hydro 48 hours’ strike notice.

Espenell said the job action delayed “clamming” work at Keeyask for three days, adding to Hydro’s revenue losses. It has led to “significant additional cost and delays” in restoring power after recent storms caused outages, especially in the Interlake, he said.

Powell said the work restrictions haven’t affected the utility’s storm response in a significant way.

“The delays in response were due to the nature of the damage, which was localized and, in some cases, significant. These damages were concentrated in the northern Interlake and a couple of locations in the north,” Powell said.

carol.sanders@freepress.mb.ca

Carol Sanders
Legislature reporter
After 20 years of reporting on the growing diversity of people calling Manitoba home, Carol moved to the legislature bureau in early 2020.

UK Grid Puts Coal Plant On Standby While Ordering Wind Farm to Cut Output

The UK’s electricity system operator, National Grid ESO, has paid a coal-fired power plant to be available for potential power production this weekend, while ordering an offshore wind farm to reduce output, Bloomberg reported on Thursday.  

Temperatures in the UK will rise into the weekend and temperatures overnight will also remain high, “which will make for an uncomfortably warm night for some,” Met Office Deputy Chief Meteorologist Dan Harris said in the latest weather forecast on Thursday.

As demand for electricity for cooling is expected to rise, the grid operator is taking precautions to ensure grid stability and flexibility with a coal plant on standby. This will be the Ratcliffe-on-Soar coal-fired plant operated by Uniper. At the same time, National Grid ESO has ordered the Seagreen offshore wind farm off the east coast of Scotland, one of the largest wind farms in the UK still in the process of commissioning, to produce less electricity.


“It might seem counterintuitive from a carbon budget perspective, but in a cost perspective and maintaining security of supply, it is the optimal solution,” Tom Edwards, a consultant with Cornwall Insight, told Bloomberg.


Coal typically generates less than 1% of Britain’s electricity, or none at all at times of favorable windy and mild weather, but it’s still being used as a back-up to ensure security of supply.

Last autumn, Uniper said it would keep units at the Ratcliffe-on-Soar coal plant in Nottinghamshire available for longer than previously planned as Europe and the UK were bracing for a difficult winter with energy shortages.

On Tuesday, natural gas produced 28.7% of British electricity, more than the shares of power generation coming from wind - 26.9%, nuclear - 19.5%, imports - 14.4%, solar 4.6%, biomass 4.3%, hydro 1.0%, and coal 0.5%, National Grid ESO said.

In June, as much as 46% of Britain’s power generation came from zero carbon sources, peaking at 80% on June 7 at 10 a.m. local time, per National Grid ESO data.

By Charles Kennedy for Oilprice.com

ONTARIO

Work ready to start on $70M landfill gas-mining project near Blenheim

Article content

Construction will begin this month on a $70-million project to mine methane gas from decomposing trash at one of Ontario’s largest landfills near Blenheim.

The project at the Ridge Landfill by energy giant Enbridge will capture enough of the greenhouse gas to equal the emissions from nearly 24,000 passenger vehicles a year.

The first such Enbridge Gas project approved by the Ontario Energy Board, it’s a milestone in the drive to reduce greenhouse gas emissions, the region’s natural gas supplier said Wednesday.

Enbridge Gas is partnering with Waste Connections Canada, owner of the Ridge Landfill. The project is expected to result in a reduction of about 110,000 tonnes of greenhouse gas emissions a year.

“Net zero is possible, and we continue to demonstrate this with today’s exciting news,” said Jim Redford, Enbridge’s vice-president of energy services, gas distribution and storage, said in a company release.

“Leveraging the existing gas system to deliver increasing levels of green fuel content, including renewable natural gas, is just one example of the steps we’re taking to support the transition to a low-carbon future,” he said.

Pending required permits, a facility to upgrade the landfill gas to low-carbon gas suitable for distribution in Enbridge’s natural gas network will be built by Waste Connections of Canada at the landfill, Enbridge said.

“Our commitment to sustainability, through significant investment in facilities like this, enables Waste Connections to provide consumers with a reliable source of renewable natural gas,” said company president Dan Pio, in the release.

“Waste Connections has ten of these facilities at our landfills, including one of the largest in North America,” he added.

The project will see Enbridge construct a new injection station and 5.7 kilometres of pipeline to allow gas to be safely sent from the landfill and into the natural gas system at an Enbridge compressor station on Communication Road.

Construction of the pipeline and related facilities is to begin this month, said Enbridge. Construction work at the landfill is slated to begin in August, with the project expected to be in service by the end of 2024.

An estimated 50 development and construction jobs, and several permanent operational jobs, are also expected.