Friday, January 27, 2023

California Wants to Ban Chrome Plating

Lawrence Hodge
Thu, January 26, 2023 

Image: Michael Macor (AP)

California is about turn the state’s restoration, customization, and other automotive industries on its head. The state is looking to reduce harmful emissions and cancer-causing chemicals. The L.A. Times reports state officials have set their sights on banning a method of chrome plating that releases potentially deadly and cancerous chemicals.

The chemical used in the chrome plating process is called hexavalent chromium. It’s what gives the chrome its shiny finish. It’s used in everything from aviation components to household bathroom fixtures. It’s probably more widely used in the automotive community. Chromed bumpers and trim are the lifeblood of the restoration and hot rod communities. They’re not ready for it.

The problem happens during the chroming process. To get that clean, shiny luster, vehicles or their parts are dipped in a vat of solution containing hexavalent chromium. Then, a current of electricity is sent through the liquid so that the hexavalent chromium adheres to the part. At the same time, however, the current heats the solution causing both bubbles and vapor which carry the chromium. And it’s deadly, over 500 times more toxic than diesel fumes.

Some companies that engage in this process are aware of the vapors and use suppressants to try to reduce the fumes. But The Times points out that the suppressants just make matters worse: “These suppressants contain PFAS, another highly toxic compound, which is discharged into local waterways.” The whole process releases cancer-causing chemicals into surrounding communities, state officials say.

Because of this, the California Air Resources Board is proposing a ban of chromium or chrome-6 by 2027 and a ban on the use of the compound for industrial durability by 2039. But the board may have a fight on its hands as both the automotive restoration industry and many of the state’s industries that rely on the compound are up in arms. The board knows that this ban would have huge implications across industries statewide, acknowledging that several thousand jobs could be lost.

If the ban is approved, state officials are allocating $10 million per year for the first three years of the ban to help the industry transition. That transition into what exactly isn’t clear. Bryan Leiker, executive director of the Metal Finishing Assn. of California said that the industry isn’t ready. “California is trying to force something to happen that’s not ready to happen. The consequences are going to be disastrous because you can lose an entire industry,” he said.

 Jalopnik

California wants to ban the toxic chemical that gives chrome its classic shine

Tony Briscoe
Thu, January 26, 2023

California could ban chrome-plating commonly used to restore classic cars and provide protective coating for industrial parts. (Irfan Khan / Los Angeles Times)

For decades, hexavalent chromium has provided the silvery showroom finish to countless consumer products, from automobile bumpers and grilles to kitchen faucets and light fixtures. It has also served as an indispensable rust-resistant coating for aviation components, such as airplane landing gear.

But while hardened chrome is harmless, the airborne emissions from the plating process are more than 500 times more toxic than diesel exhaust, and pose a substantial cancer risk to surrounding communities.

In light of these risks, the California Air Resources Board has proposed a landmark ban on the use of so-called chrome-6 in decorative plating by 2027, saying the health hazards of the plating process are borne disproportionately by low-income communities. The rule would also prohibit the chemical's use for industrial durability — such as providing anti-corrosive coatings — by 2039.


The proposal has drawn praise from clean air advocates but has also sent shock waves through the state's auto restoration and customization industries. It could also force California aerospace companies and defense contractors to accelerate research into less toxic alternatives.

"We would be the first jurisdiction in the world to phase out hexavalent chromium in the plating industry," said Jane Williams, executive director of California Communities Against Toxics. "Even the EU hasn't done it because they haven't found a substitute for crucial uses. We would be working with the industry and the military to actually identify new coatings. That's precedent setting."

The proposal, however, has been blasted by the chrome plating industry. Bryan Leiker, executive director of the Metal Finishing Assn. of California, said that these facilities are already required to comply with the strictest regulations in the nation, and that an outright ban would only compel businesses and jobs to leave California.

"California is trying to force something to happen that's not ready to happen," Leiker said. "The consequences are going to be disastrous, because you can lose an entire industry."

The Air Resources Board will hold the public hearing on the matter at 8:30 a.m. Friday in Riverside. Board members will vote on the final proposal in May.

In California, there are over 110 chrome-plating facilities, and more than 70% of them are located in disadvantaged communities. Los Angeles County in particular — with its abundance of car enthusiasts and top aerospace companies — has the greatest concentration of chrome platers in the nation.

From hot rods to low riders, life in Southern California is still synonymous with classic and customized cars of yesteryear, and chrome's legacy remains strong. Much of that has to do with the social influence chrome once held in a car-centric region that eagerly adapted itself to automobiles.

"Because you were in your car so much, it was another way of greeting the world," said Leslie Kendall, chief historian of the Petersen Automotive Museum in Los Angeles. "It was like your ultimate outer layer of clothing. Chrome on a car was like a brooch for a lady's coat, something that embellished the form."

Car clubs meet before a drive along the historic Whittier Boulevard on Sunday, June 28, 2020. (Christina House/Los Angeles Times)

But the mirror-like sheen on wheels, bumpers and grilles comes at a cost. This luster is achieved by dipping auto parts in industrial tanks with a liquid solution containing a potent carcinogen.

An electric current is sent through the tank, causing hexavalent chromium to adhere to the part. At the same time, however, voltage also causes the solution to bubble, releasing chromium-laden vapors as they burst.

Many of these operations try to reduce the vapors by adding chemical fume suppressants to the chromium solution. But these suppressants contain PFAS, another highly toxic compound, which is discharged into local waterways.

California identified hexavalent chromium as a toxic air contaminant that has no safe amount of exposure in 1986. Over time, people have become more concerned about the chemical's health consequences.

In 1998, community groups called for an investigation into a chrome-plating operation near Suva Elementary and Intermediate schools in Bell Gardens.

The groups suspected that chrome emissions had contributed to numerous health problems for children, teachers and residents. Twenty-two students and six teachers at the schools had been diagnosed with cancer in eight years, organizers say.

Several families, including those whose children died from cancer, filed a lawsuit against Chrome Crankshaft, a company that plated locomotive parts. The suit was later settled.

Since then, the state has adopted the nation's most stringent emission standards for chrome plating operations.

Today, about 9% of chrome platers in California operate within 1,000 feet of schools.

The metal finishing industry has argued its emissions pale in comparison with others'.

California's 58 large chrome platers produced less than 1% of hexavalent chromium pollution, according to state data. The vast majority comes from burning fossil fuels. Cement production and lumber industries also emit more.

"We're less than 1% of emissions statewide, but we're the only industry facing a ban right now," Leiker said.

Although the amount of total emissions may seem insignificant, state regulators and environmental advocates contend chrome plating facilities can drastically elevate concentrations in the areas immediately surrounding them, posing a long-term health threat.

The Air Resources Board hopes the proposed rule will encourage these facilities to switch to trivalent chromium, a far less toxic alternative, which has been available as a substitute since the early 1990s.

However, trivalent chromium has not been widely used in the decorative plating industry because its darker color is similar to stainless steel, an aesthetic that has not appealed to California car enthusiasts striving to re-create the high-gloss sheen of the 20th century.

"It's a different color and it just wouldn't look right on these older cars," said Elayne Bendel, who is on the board of the Lincoln and Continental Owner's Club Western Region. "It would never match what came out of the factory, let's say, in 1960 or sometime back there."

If California's chrome proposal is adopted, the Mission Viejo resident said, classic car owners here would probably have to send their parts out of state to have them chromed, making a difficult hobby even more expensive.

"There's a scarcity of labor, a scarcity of parts, and if the ability to get good chrome locally goes away, then that's just another aspect of the difficulty with owning these cars," Bendel said.

But chrome has been used for more than simply embellishing cars.

California is home to some of the world's largest aerospace companies and defense contractors. Trivalent chromium coating has not been proved to meet U.S. Department of Defense specifications for thickness, hardness and corrosion resistance.

A decommissioned Air Force One jet that transported President Ronald Reagan sits on display at the Reagan Presidential Library in Simi Valley. (Tyrone Beason/Los Angeles Times)

"The Department of Defense is looking into less toxic alternative coatings to hexavalent chromium, including applications via additive manufacturing processes," Navy Lt. Cmdr. Timothy Gorman, a Pentagon spokesperson, said in a statement. "We will continue to work with our public and private industry partners and communicate on potential changes in this area.”

The California Air Resources Board acknowledges that the rule would have wide-ranging effects, and estimates that several thousand jobs could be lost in manufacturing and other sectors related to chrome plating.

The chrome plating facilities that remain will incur significant costs to transition to trivalent chromium plating, which the air board estimates would be around $323,000 for decorative platers and $4 million for industrial platers.

"It's completely new equipment, new solution, new process and new permitting," said Leiker, the metal finishing director. "It's not as simple as draining the tank and putting in the new solution."

If the rule is approved, the state Legislature has allocated $10 million a year, for the first three years, to assist chrome platers with the transition.

The public can view or register to participate in the Air Resources Board meeting online.

This story originally appeared in Los Angeles Times.
Lula calls on France's Macron to attend summit of Amazon countries



A black male jaguar is seen on top of a tree at the Mamiraua Sustainable Development Reserve in Uarini, Brazil

Thu, January 26, 2023


(Reuters) - Brazil's President Luiz Inacio Lula da Silva on Thursday urged his French counterpart, Emmanuel Macron, to have France attend the summit of the Amazon countries that he aims to host in coming months.


Lula, who was elected for a third term last October vowing to tackle deforestation in the rainforest, discussed in a phone call with Macron efforts to combat the threat posed by climate change, according to a statement from his office.

He talked about the importance of France attending a summit of the countries of the Amazon forest that Brazil plans to host in the next few month, as it is the only European country to share the biome, through its overseas territory of French Guiana.

Besides Brazil and French Guiana, seven other countries have territory in the world's largest rainforest.


Macron has meanwhile asked Brazil to attend its own "One Forest Summit" that France and Gabon will host in early March, according to the Brazilian statement.


Lula won a narrow election last year promising an overhaul in Brazil's climate policy, after deforestation in the Amazon reached its highest levels in 15 years under then far-right President Jair Bolsonaro, who undermined environmental law enforcement and pushed for more mining and farming in the region.

Bolsonaro had a strained relationship with Macron, after the French president denounced in 2019 surging fires in the Amazon. Bolsonaro responded by insulting Macron's wife and accusing him of disrespecting Brazilian sovereignty.

Later on Thursday, Macron said after speaking with Lula that he had reaffirmed his determination to take action "for the climate, biodiversity, our forests and against hunger."

"We will meet these challenges," he said.

(Reporting by Peter Frontini; Editing by Sandra Maler)
Climate tipping points in Amazon, Tibet 'linked': scientists


Kelly MACNAMARA
Thu, January 26, 2023


Climate extremes in the Amazon rainforest are directly affecting those in the Tibetan Plateau, scientists said Thursday, warning that the Himalayan region crucial for the water security of millions was close to a potentially disastrous "tipping point".

Planet-heating pollution from human activities is raising global temperatures and scientists have said this is pushing crucial ecosystems and whole regions towards often irreversible changes.

Vulnerable areas include melting polar ice sheets that could cause metres of sea-level rise, as well as the Amazon basin, where tropical forests are at risk of turning into savannah.

But can one tipping point have a domino effect on another region? Recent research suggests this is already happening.

Climate-driven changes in the Amazon basin have knock-on effects on the Tibetan Plateau 20,000 kilometres (12,500 miles) away, scientists in China, Europe and Israel reported in Nature Climate Change earlier this month.

"We've been surprised to see how strongly climate extremes in the Amazon are connected to climate extremes in Tibet," said co-author Jurgen Kurths from Potsdam Institute for Climate Impact Research.

The researchers used global near-surface temperature data over the last 40 years to map out a pathway of climate links. They stretched from South America to Southern Africa, on to the Middle East and finally into the Tibetan Plateau.

In their study, the researchers then used computer simulations to track how global warming might change these long-distance link-ups out to 2100.

They found that when it gets warmer in the Amazon, temperatures also rise in Tibet. But when rain increases in the South American rainforest, snowfall decreases in the Himalayan region, sometimes called the "third pole".

- 'Tipping cascades' -


Using snow cover data, the scientists also detected what they say are early warnings the Tibetan Plateau has been approaching a tipping point of its own since 2008.

The Tibetan Plateau supplies a substantial proportion of the water needs of almost two billion people across South Asia, Southeast Asia and China.

Research published in Nature Climate Change last year said climate change could deplete terrestrial water storage over the Tibetan Plateau, which may ultimately threaten water availability downstream.

Other studies have shown a warming trend in recent decades in the region which -- like the Arctic region -- is warming two to three times faster than the global average.

But Kurths said the proximity to a potential point-of-no-return transition had been "overlooked so far".

The researchers said that while their study suggests a heightened risk of "tipping cascades" it was unlikely that the climate system as a whole would flip into a new state.

"Yet, over time, sub-continental tipping events can severely affect entire societies and threaten important parts of the biosphere," said co-author Hans Joachim Schellnhuber from PIK.

"This is a risk we should rather avoid."

To avoid the worst impacts of warming, countries have agreed to keep temperatures from rising above the limit of well below two degrees Celsius since the mid-1900s, and preferably below 1.5C.

For that to be achieved, planet-heating greenhouse gas emissions, mainly from fossil fuels, must decline some 45 percent compared to 2020 levels by the end of this decade, and to net zero by mid-century, according to the UN's climate science advisory body.

klm/mh/jj

The Amazon Is Deteriorating Too Fast for Species and the Climate to Adapt



Carly Wanna
Thu, January 26, 2023 

(Bloomberg) -- Two new scientific review articles by international teams of researchers paint a bleak picture of the state of the Amazon rainforest: The critical ecosystem is being damaged at an unprecedented pace, they warn, which may usher in “a qualitatively different global climate regime” with grievous effects on biodiversity and human welfare.

The papers, both published in the peer-reviewed journal Science on Thursday, summarize research on deforestation and landscape degradation in the Amazon to deliver a sharp message. The region that is key to the world’s climate system “is now perched to transition rapidly from a largely forested to a nonforested landscape,” write one set of authors, “and the changes are happening much too rapidly for Amazonian species, peoples, and ecosystems to respond adaptively.”

The main culprits are human activities, such as logging and clearing forest for cattle pasture, as well as climate change.

“We know the two major drivers of deforestation are global climate change and regional deforestation,” said James Albert, a biologist at the University of Louisiana at Lafayette and lead author of one of the articles. “If you allow development to proceed unregulated, you will have an ecological disaster.”

Albert and his team analyzed data from the Science Panel for the Amazon Assessment Report, which documents changes to the Amazon’s ecosystem and biodiversity. Specifically, they compared how fast humans are changing the Amazon with the speed at which other natural processes are affecting it. They found that human factors are causing degradation and habitat destruction at a rate hundreds to thousands of times faster than natural phenomena are.

Already, 17% of the rainforest has been impacted by disturbances like logging, fires and road expansion, and 14% of it has been replaced with pasture or cropland.

The second review focuses on other human-caused factors that degrade the Amazon — including timber extraction, fire and extreme drought. By analyzing existing data, the researchers found that these impacts are degrading roughly 2.5 million square kilometers (965,000 square miles), representing more than one third of the region’s remaining forest.

According to lead author David Lapola, a research scientist at University of Campinas in Brazil, the analysis rounds out the focus on deforestation that characterizes much other Amazon research. “Even though we’ve been looking to the Amazon for quite some time with our scientific glasses, there are many processes directly caused by man that we’ve been ignoring,” Lapola said.

The researchers call for proactive measures to conserve the Amazon and broadly reduce global emissions, such as stronger forest-protection policies and a halt to international financing of market-driven land conversion. Brazil’s recently elected president, Luiz Inácio Lula da Silva, has pledged to safeguard the Amazon after damage to the rainforest accelerated under his predecessor, Jair Bolsonaro.

William Ripple, an ecologist at Oregon State University who did not co-author either article, said the reviews do “an outstanding job” documenting the Amazon in crisis: “This is an example of the toll humans are making on ecosystems all over the world, and at some point we will need to change our ways to survive.”


Amazon heat drives Tibet temperatures: climate tipping elements connected half around the globe

While the Amazon rainforest and the Tibetan Plateau sit on different sides of the globe, scientists now discovered that changes in the South American ecosystem can trigger changes in the vicinity of the Himalayas

Peer-Reviewed Publication

POTSDAM INSTITUTE FOR CLIMATE IMPACT RESEARCH (PIK)


“Logging, road construction and warming are already today stressing the Amazon rainforest, and will likely do so even more in the future – and while the Amazon region is of course an important Earth system element by itself, it’s also a burning question if and how changes in that region could affect other parts of the world,” explains Jingfang Fan from Beijing Normal University, China, and the Potsdam Institute for Climate Impact Research (PIK) in Germany. “For the first time, we’ve now been able to robustly identify and quantify these so called teleconnections. Our research confirms  that Earth system tipping elements are indeed inter-linked even over long distances, and the Amazon is one key example how this could play out.”

Analysis of air temperature changes in 65.000 subregions in the past 40 years

The researchers analyzed near-surface air temperature changes in a grid of more than 65.000 subregions, regarded as nodes, they put on the globe, using data from the past 40 years. By doing so, they could see how changes at one node influenced those at another one. They succeeded to detect a pronounced propagation pathway over more than 20.000 kilometers –  from South America via Southern Africa to the Middle East and finally to the Tibetan Plateau. This pathway can be explained by the main atmospheric and oceanic circulation patterns.

In a next step, the researchers used state-of-the-art climate computer simulations to see how global warming, caused by greenhouse gas emissions from burning fossil fuels, might modify the long-distance linkages until 2100. “We’ve been surprised to see how strongly climate extremes in the Amazon are connected to climate extremes in Tibet,” says Jürgen Kurths from PIK, a co-author of the paper. “When it’s getting warmer in the Amazon, it also does so in Tibet, hence for temperature there’s a positive correlation. It’s different for precipitation. When we have more rain in the Amazon, there’s less snowfall in Tibet.”

The researchers detected the early warning signals based on the snow cover data and reveal that the Tibetan Plateau has been losing stability and approaching a tipping point since 2008. “This  has been overlooked so far,” says Kurths. Despite its remote location, the Tibetan Plateau is relevant for a lot of people’s livelihoods due to its role as an important water reservoir.

"This is a risk we should rather avoid"

“Our research underlines that tipping cascades are a risk to be taken seriously: inter-linked tipping elements in the Earth system can trigger each other, with potentially severe consequences,” says Hans Joachim Schellnhuber from PIK, also a co-author. “To be clear, it’s unlikely that the climate system as a whole will tip. Yet, over time, sub-continental tipping events can severely affect entire societies and threaten important parts of the biosphere. This is a risk we should rather avoid. And we can do so by rapidly reducing greenhouse gas emissions and by developing nature-based solutions for removing CO2 from the atmosphere.”
 

Article: Teng Liu, Dean Chen, Lan Yang, Jun Meng, Zanchenling Wang, Josef Ludescher, Jingfang Fan, Saini Yang, Deliang Chen, Jürgen Kurths, Xiaosong Chen, Shlomo Havlin, Hans Joachim Schellnhuber  (2023): Teleconnections among tipping elements in the Earth system. Nature Climate Change [DOI:10.1038/s41558-022-01558-4]

Link to the article: https://www.nature.com/articles/s41558-022-01558-4

New geosciences study shows Triassic fossils that reveal origins of living amphibians

A team of Virginia Tech paleontologists, led by doctoral candidate Ben Kligman, have discovered the first Triassic-era caecilian fossils, the oldest-known of their kind, in Arizona.

Peer-Reviewed Publication

VIRGINIA TECH

Lower jaw from Funcusvermis gilmorei 

IMAGE: MICROSCOPIC PHOTOGRAPH OF A LOWER JAW FROM FUNCUSVERMIS GILMOREI SOON AFTER IT WAS RECOVERED DURING MICROSCOPIC SORTING OF SEDIMENT FROM THE THUNDERSTORM RIDGE FOSSIL SITE IN THE PETRIFIED FOREST NATIONAL PARK PALEONTOLOGY LAB. view more 

CREDIT: PHOTO BY BEN KLIGMAN FOR VIRGINIA TECH

The smallest of newly found fossils can upend what paleontologists know about our history.

A team of paleontologists from Virginia Tech and the U.S. Petrified Forest National Park, among others, have discovered the first “unmistakable” Triassic-era caecilian fossil — the oldest-known caecilian fossils — thus extending the record of this small, burrowing mammal by roughly 35 million years. The find also fills a gap of at least 87 million years in the known historical fossil record of the amphibian-like creature.

The fossil was first co-discovered by Ben Kligman, a doctoral student in the Department of Geosciences, part of the Virginia Tech College of Science, at Arizona’s Petrified Forest National Park during a dig in 2019. Named by Kligman as Funcusvermis gilmorei, the fossil extends the history of caecilians 35 million years back to Triassic Period, roughly 250 million to 200 million years ago.

Prior to this new study, published today in the journal Nature, only 10 fossil caecilian occurrences were known, dating back to the Early Jurassic Period, about 183 million years ago. However, previous DNA studies estimated evolutionary origins of caecilians back to the Carboniferous or Permian eras, some 370 million to 270 million years ago, according to Kligman, marking that 87-million-year gap. However, no such fossils had been found.

“The discovery of the oldest caecilian fossils highlights the crucial nature of new fossil evidence. Many of the biggest outstanding questions in paleontology and evolution cannot be resolved without fossils like this,” said Kligman, who previously discovered a 220-million-year-old species of cynodont or stem-mammal, a precursor of modern-day mammals. “Fossil caecilians are extraordinarily rare, and they are found accidentally when paleontologists are searching for the fossils of other more common animals. Our discovery of one was totally unexpected, and it transformed the trajectory of my scientific interests.”

The discovery of the fossils was made in 2019 by Kligman and Petrified Forest National Park student intern Xavier Jenkins, now a Ph.D. student at Idaho State University, while the duo was processing fossiliferous sediment from the park’s nicknamed Thunderstorm Ridge via a microscope. Funcusvermis was found in a layer of the Chinle Formation dated to approximately 220 million years ago, when Arizona was positioned near the equator at the central part of the supercontinent Pangaea, Kligman said. This region at the time was subject to a hot, humid climate. Today, Arizona is still hot, but has low humidity.

“Seeing the first jaw under the microscope, with its distinctive double row of teeth, sent chills down my back,” Kligman said. “We immediately knew it was a caecilian, the oldest caecilian fossil ever found, and a once-in-a-lifetime discovery.”

Previous to this find, the 87-million-year gap in the fossil record hid the early evolutionary history of caecilians, leading to a decades-long debate amongst scientists over the relationships of caecilians to their amphibian relatives, frogs and salamanders.

“Funcusvermis extends the humid equatorial pattern of occurrence seen in all known fossil and living caecilians, suggesting that the biogeographic history of caecilians has been guided by restriction to these ecological settings, likely due to physiological constraints linked to humidity, and constrained by the drift of continental plates into and out of the humid-equatorial zone after the fragmentation of Pangaea,” Kligman said.

Modern caecilians are limbless amphibians with cylindrical bodies with a compact, bullet-shaped skull that helps them burrow underground. Now exclusively home to South and Central America, Africa, and southern Asia, caecilians spend their lives burrowing in leaf-litter or soil searching for prey such as worms and insects. This underground existence has made studying caecilians difficult for scientists. Kligman, tongue in cheek, describes modern caecilians as an “eyeless sock puppet with the body of a worm.”

Funcusvermis actually shares skeletal features related more with early frog and salamander fossils, strengthening evidence for a shared origin and close evolutionary relationship between caecilians and these two groups. Funcusvermis also shares skeletal features with an ancient group of amphibians known to paleontologists as dissorophoid temnospondyls. Kligman adds, “Unlike living caecilians, Funcusvermis lacks many adaptations associated with burrowing underground, indicating a slower acquisition of features associated with an underground lifestyle in the early stages of caecilian evolution.”

Name that tune

Now, here’s the fun part: The genus name ‘Funcusvermis’ was inspired by the Ohio Players’ 1972 song “Funky Worm” from their album Pleasure, a favorite song of the authors that was often played while excavating fossils at Thunderstorm Ridge. ‘Funcus’ is derived from the Latinized form of the English word Funky for the upbeat, rhythmic form of dance music, while ‘vermis’ is derived from the Latin word for worm. (It’s an excellent song, by the way. Instant earworm, so to speak.)

The species name, gilmorei, honors Ned Gilmore, the collections manager at the Academy of Natural Sciences of Philadelphia’s Drexel University. (Kligman is from Philadelphia and volunteered with Gilmore’s herpetology wet collection as an undergraduate student. “He was an important mentor who helped inspire my interest in fossils and amphibians,” Kligman said.)

Co-authors on the study include Michelle Stocker, an assistant professor, and Sterling Nesbitt, an associate professor, in the Virginia Tech Department of Geosciences and members of the Global Change Center that is part of the Fralin Life Sciences Institute. Other authors include Adam Marsh, lead paleontologist; Matthew Smith, museum curator; and William Parker, chief of science and resource management, all at the Petrified Forest National Park; and Bryan Gee, postdoctoral fellow at the University of Washington’s Burke Museum and Department of Biology.

“As the eponymous song says, it's the funkiest worm in the world,” Marsh quipped.

Stocker added, “What we collect really determines what we can say about which animals that were present, how many of them there were, and what they looked like. Without using these methods for fossil collection and analysis we would be missing out on knowing so many important aspects of this Triassic ecosystem. Now that we have a search image of what bones to look for and how to look for them, it will be exciting to see what other fossil localities preserve these early lissamphibians.”

Nesbitt said finds such as this can reset the game board on paleontology, in the best sense of the phrase. “This find clearly demonstrates that some fossils that you can barely see can greatly change our understanding of entire groups that you can see today,” he said.

What’s happened since 2019

At the Petrified Forest National Park, where the initial discovery was found in 2019, the lower jaws of at least 70 individuals of Funcusvermis have been recovered as of summer 2022, making the area “the most abundant fossil caecilian-producing bonebed ever discovered,” Kligman said.

Only a handful of bones of Funcusvermis have been found, including upper and lower jaws, a vertebra, and part of a hind-limb, Kligman said. All of the found bones were disarticulated, not as complete skeletons. Without complete skeletons, Kligman and his fellow researchers cannot exactly determine the body length of Funcusvermis, but inferences from isolated elements, such as the lower jaw being less than a quarter of an inch long, indicate that Funcusvermis was a tiny animal.

“Since its discovery in 2017, the Thunderstorm Ridge site has produced a diverse assemblage of over 60 animals ranging from freshwater sharks to dinosaurs,” Kligman said. “Several other new species discovered at this site have been recently described. Many other new species from this site are currently under study and will be published in upcoming years.”

In other words, fully expect more upending of what paleontologists know about the history of fossils.

What crocodile DNA reveals about the Ice Age

Environmental drivers such as sea level affect genetic evolution and point to where conservation efforts may be focused

Peer-Reviewed Publication

MCGILL UNIVERSITY

American Crocodile (Crocodylus acutus) 

IMAGE: AMERICAN CROCODILE (CROCODYLUS ACUTUS). view more 

CREDIT: HANS LARSSON

What drives crocodile evolution? Is climate a major factor or changes in sea levels? Determined to find answers to these questions, researchers from McGill University discovered that while changing temperatures and rainfall had little impact on the crocodiles’ gene flow over the past three million years, changes to sea levels during the Ice Age had a different effect.

“The American crocodile tolerates huge variations in temperature and rainfall. But about 20,000 years ago – when much of the world's water was frozen, forming the vast ice sheets of the last glacial maximum – sea levels dropped by more than 100 metres. This created a geographical barrier that separated the gene flow of crocodiles in Panama,” says postdoctoral fellow José Avila-Cervantes, working under the supervision of McGill professor Hans Larsson.

The researchers point out that the crocodiles are good swimmers, but they can’t travel long distances on land. As a result, the Caribbean and Pacific crocodile populations were isolated from each other, and consequently have undergone different genetic mutations.

The team compared the climate tolerance of living populations of American crocodiles (Crocodylus acutus) to the paleoclimate estimates for the region over the past 3 million years – the time span of extreme climate variation during the Ice Age.

“This is one of the first times Ice Age effects have been found in a tropical species. It’s exciting to discover effects of the last Ice Age glaciation still resonate in the genomes of Pacific and Caribbean American crocodiles today,” says Larsson, Professor of Biology at the Redpath Museum of McGill University.

“Discovering that these animals would have easily tolerated the climate swings of the Ice Age speaks to their resilience over geological time. Only humans in recent decades of hunting and land development seem to really affect crocodiles,” he says. The findings offer new insight into how environmental drivers affect genetic evolution and where conservation efforts of particular crocodile populations in Panama should be focused.

About the study

"Ice Age effects on genetic divergence of the American crocodile (Crocodylus acutus) in Panama: reconstructing limits of gene flow and environmental ranges: A reply to O’Dea et al.” by José Avila-Cervantes and Hans Larsson was published in Evolution.

40,000-year-old cave full of animal skulls might be first known site of human rituals

Moira Ritter
Thu, January 26, 2023 

Click on the Facebook page of someone who hunts, and you might find a picture of them dressed in camo with black face paint streaked under their eyes, grinning while holding up the head of a buck.

New evidence shows that humans’ earliest ancestors might have had a similar idea.

A team of Spanish archaeologists recently unearthed a trove of large animal skulls in a 40,000-year-old cave, according to a Jan. 26 news release from the Community of Madrid. Experts say the findings could be the first evidence of ancient human rituals.

The skulls belonged to large ungulates — mammals with hooves, including horses, bison, deer and elk — and were found in Cueva Des-Cubierta, a known Neanderthal site that was originally discovered in 2009, the community said.

Unlike other, similar discoveries, archaeologists said the remains they found within the cave were not consistent with subsistence activities, but instead appeared to be symbolic.

Evidence at the site indicates that the mammals were killed and consumed outside of the cave, according to a study from the team released Jan. 26 in Nature Human Behavior. The skulls that were recovered all had appendages but were missing their teeth and jaws, leading experts to believe that they were used as hunting trophies.


Two rhinoceros skulls were found in the cave, archaeologists said.

Some of the smaller bones also showed signs of being cooked or burned on a hearth, the study said.

The evidence at Cueva Des-Cubierta is the first of its kind, indicating that Neanderthals may have had symbolic capacity, which means they held more intellectual capacity than previously known, the community said.

The team also identified more than 1,000 ancient tools, including anvils, hammerstones, cores, flakes and other shaped tools, they said in the study.

The cave is about 55 miles north of Madrid.

Google Translate was used to translate the release from the Community of Madrid.
An ancient Roman city is unearthed in Egypt. Take a look inside the city streets


Irene Wright
Wed, January 25, 2023 

Egyptian archaeologists working on the east bank of the Nile River have discovered what they believe to be a complete residential city from the Roman era, according to a Ministry of Tourism and Antiquities release.

The ruins were found in the city of Luxor in southern Egypt. The city was once the site of the pharaoh capital Thebes during the height of their power from the 16th to 11th centuries B.C., according to Britannica.

The ministry said the discovery was the oldest, and most important, residential city found so far in Luxor. The findings included residential buildings and bathroom towers, dated to the second and third centuries A.D.


Residential buildings and bathroom towers were dated to the second and third centuries A.D.

The archaeologists also found industrial and metal-working workshops and the things created in them. These include pots, water bottles, pottery, grinding tools and Roman coins, both copper and bronze.

Findings included pots, water bottles, grinding tools and Roman coins.

Director general of archaeology Fathi Yassin said in the release that they also found pigeon towers, once used to house birds. There were also pots that may have been used for pigeon nests, a practice that was likely started during the Roman era.

Excavation began on the site in September as part of a series of projects.

Mustafa Waziri, secretary general of the Supreme Council for Archaeology, said in the release that he was happy about the result of the excavation so far, but that more work was needed on the site to unlock more secrets hidden in the ruins.

Google Translate was used to translate the release from the Ministry of Tourism and Antiquities.
Cryptic rock paintings — all over 6,000 years old — rediscovered in China. Take a look


Aspen Pflughoeft
Thu, January 26, 2023 

Scattered across the hills of China, numerous rock paintings have been rediscovered. The meticulously crafted designs have become cryptic messages from millennia ago.

Archaeologists in Nanyang have identified several more petroglyphs, or ancient rock paintings, with a variety of designs, the Institute of Archaeology at the Chinese Academy of Social Sciences said in a Friday, Jan. 6, news release via China News Network.

The petroglyphs were hammered into granite and quartz sandstone, researchers said. Photos show the rock paintings with two distinct design styles: a linear carving style and a dotted carving style.

One of the rock paintings with a looping line design.

A smaller rock painting made of carved dots.

Rock paintings are common across Nanyang and tens of thousands of petroglyphs have been identified, according to the release. The diverse petroglyphs are all considered part of the Central Plains rock painting system.

A large rock painting with an abstract dot design.

Petroglyphs in Nanyang were carved from the Neolithic Age to the Bronze Age, according to a 2012 study by Tang Huisheng published in the Rock Art Research journal. The paintings are anywhere from 6,000 years old to 11,000 years old.

A rock carving with a design of dense dots.

Unfortunately, the “purpose, function (and) cultural meaning” of the seemingly “randomly executed” rock art has become harder to interpret over time, Huisheng said.

A rock painting with groups of double dot rows.

Researchers have speculated that the petroglyphs may be part of an early human writing system, a sort of astronomical calendar or an expression of ancient human ideology, per the news release.


Nanyang is in Henan province and about 580 miles southwest of Beijing.

Google Translate and Baidu Translate were used to translate the news release from the Institute of Archaeology at the Chinese Academy of Social Sciences.

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How California's ambitious new climate plan could help speed energy transformation around the world

Daniel Sperling, Distinguished Blue Planet Prize Professor of Civil and Environmental Engineering
 Founding Director, Institute of Transportation Studies, University of California, Davis
THE CONVERSATION
Thu, January 26, 2023 

Electrifying trucks and cars and shifting to renewable energy are crucial for California's zero-emissions future. 
Sergio Pitamitz / VWPics/Universal Images Group via Getty Images

California is embarking on an audacious new climate plan that aims to eliminate the state’s greenhouse gas footprint by 2045, and in the process, slash emissions far beyond its borders. The blueprint calls for massive transformations in industry, energy and transportation, as well as changes in institutions and human behaviors.

These transformations won’t be easy. Two years of developing the plan have exposed myriad challenges and tensions, including environmental justice, affordability and local rule.

For example, the San Francisco Fire Commission had prohibited batteries with more than 20 kilowatt-hours of power storage in homes, severely limiting the ability to store solar electricity from rooftop solar panels for all those times when the sun isn’t shining. More broadly, local opposition to new transmission lines, large-scale solar and wind facilities, substations for truck charging, and oil refinery conversions to produce renewable diesel will slow the transition.

I had a front row seat while the plan was prepared and vetted as a longtime board member of the California Air Resources Board, the state agency that oversees air pollution and climate control. And my chief contributor to this article, Rajinder Sahota, is deputy executive officer of the board, responsible for preparing the plan and navigating political land mines.

We believe California has a chance of succeeding, and in the process, showing the way for the rest of the world. In fact, most of the needed policies are already in place.
What happens in California has global reach

What California does matters far beyond state lines.


California is close to being the world’s fourth-largest economy and has a history of adopting environmental requirements that are imitated across the United States and the world. California has the most ambitious zero-emission requirements in the world for cars, trucks and buses; the most ambitious low-carbon fuel requirements; one of the largest carbon cap-and-trade programs; and the most aggressive requirements for renewable electricity.

In the U.S., through peculiarities in national air pollution law, other states have replicated many of California’s regulations and programs so they can race ahead of national policies. States can either follow federal vehicle emissions standards or California’s stricter rules. There is no third option. An increasing number of states now follow California.

So, even though California contributes less than 1% of global greenhouse gas emissions, if it sets a high bar, its many technical, institutional and behavioral innovations will likely spread and be transformative.

What’s in the California blueprint

The new Scoping Plan lays out in considerable detail how California intends to reduce greenhouse gas emissions 48% below 1990 levels by 2030 and then achieve carbon neutrality by 2045.

It calls for a 94% reduction in petroleum use between 2022 and 2045 and an 86% reduction in total fossil fuel use. Overall, it would cut greenhouse gas emissions by 85% by 2045 relative to 1990 levels. The remaining 15% reduction would come from capturing carbon from the air and fossil fuel plants, and sequestering it below ground or in forests, vegetation and soils.

To achieve these goals, the plan calls for a 37-fold increase in on-road zero-emission vehicles, a sixfold increase in electrical appliances in residences, a fourfold increase in installed wind and solar generation capacity, and doubling total electricity generation to run it all. It also calls for ramping up hydrogen power and altering agriculture and forest management to reduce wildfires, sequester carbon dioxide and reduce fertilizer demand.

This is a massive undertaking, and it implies a massive transformation of many industries and activities.
Transportation: California’s No. 1 emitter

Transportation accounts for about half of the state’s greenhouse gas emissions, including upstream oil refinery emissions. This is where the path forward is perhaps most settled.

The state has already adopted regulations requiring almost all new cars, trucks and buses to have zero emissions – new transit buses by 2029 and most truck sales and light-duty vehicle sales by 2035.

In addition, California’s Low Carbon Fuel Standard requires oil companies to steadily reduce the carbon intensity of transportation fuels. This regulation aims to ensure that the liquid fuels needed for legacy cars and trucks still on the road after 2045 will be low-carbon biofuels.


The Port of Long Beach opened the nation’s first publicly accessible charging station for heavy-duty electric trucks in November 2022. 
Brittany Murray/MediaNews Group/Long Beach Press-Telegram via Getty Images

But regulations can be modified and even rescinded if opposition swells. If battery costs do not resume their downward slide, if electric utilities and others lag in providing charging infrastructure, and if local opposition blocks new charging sites and grid upgrades, the state could be forced to slow its zero-emission vehicle requirements.

The plan also relies on changes in human behavior. For example, it calls for a 25% reduction in vehicle miles traveled in 2030 compared with 2019, which has far dimmer prospects. The only strategies likely to significantly reduce vehicle use are steep charges for road use and parking, a move few politicians or voters in the U.S. would support, and a massive increase in shared-ride automated vehicles, which are not likely to scale up for at least another 10 years. Additional charges for driving and parking raise concerns about affordability for low-income commuters.
Electricity and electrifying buildings

The key to cutting emissions in almost every sector is electricity powered by renewable energy.

Electrifying most everything means not just replacing most of the state’s natural gas power plants, but also expanding total electricity production – in this case doubling total generation and quadrupling renewable generation, in just 22 years.

That amount of expansion and investment is mind-boggling – and it is the single most important change for reaching net zero, since electric vehicles and appliances depend on the availability of renewable electricity to count as zero emissions.

Electrification of buildings is in the early stages in California, with requirements in place for new homes to have rooftop solar, and incentives and regulations adopted to replace natural gas use with heat pumps and electric appliances.


Two microgrid communities being developed in Menifee, Calif., feature all-electric homes equipped with solar panels, heat pumps and batteries. 
Watchara Phomicinda/MediaNews Group/The Press-Enterprise via Getty Images

The biggest and most important challenge is accelerating renewable electricity generation – mostly wind and utility-scale solar. The state has laws in place requiring electricity to be 100% zero emissions by 2045 – up from 52% in 2021.

The plan to get there includes offshore wind power, which will require new technology – floating wind turbines. The federal government in December 2022 leased the first Pacific sites for offshore wind farms, with plans to power over 1.5 million homes. However, years of technical and regulatory work are still ahead.

For solar power, the plan focuses on large solar farms, which can scale up faster and at less cost than rooftop solar. The same week the new scoping plan was announced, California’s Public Utility Commission voted to significantly scale back how much homeowners are reimbursed for solar power they send to the grid, a policy known as net metering. The Public Utility Commission argues that because of how electricity rates are set, generous rooftop solar reimbursements have primarily benefited wealthier households while imposing higher electricity bills on others. It believes this new policy will be more equitable and create a more sustainable model.
Industry and the carbon capture challenge

Industry plays a smaller role, and the policies and strategies here are less refined.

The state’s carbon cap-and-trade program, designed to ratchet down total emissions while allowing individual companies some flexibility, will tighten its emissions limits.

But while cap-and-trade has been effective to date, in part by generating billions of dollars for programs and incentives to reduce emissions, its role may change as energy efficiency improves and additional rules and regulations are put in place to replace fossil fuels.

One of the greatest controversies throughout the Scoping Plan process is its reliance on carbon capture and sequestration, or CCS. The controversy is rooted in concern that CCS allows fossil fuel facilities to continue releasing pollution while only capturing the carbon dioxide emissions. These facilities are often in or near disadvantaged communities.

California’s chances of success

Will California make it? The state has a track record of exceeding its goals, but getting to net zero by 2045 requires a sharper downward trajectory than even California has seen before, and there are still many hurdles.

Environmental justice concerns about carbon capture and new industrial facilities, coupled with NIMBYism, could block many needed investments. And the possibility of sluggish economic growth could led to spending cuts and might exacerbate concerns about economic disruption and affordability.

There are also questions about prices and geopolitics. Will the upturn in battery costs in 2022 – due to geopolitical flare-ups, a lag in expanding the supply of critical materials, and the war in Ukraine – turn out to be a hiccup or a trend? Will electric utilities move fast enough in building the infrastructure and grid capacity needed to accommodate the projected growth in zero-emission cars and trucks?

It is encouraging that the state has already created just about all the needed policy infrastructure. Additional tightening of emissions limits and targets will be needed, but the framework and policy mechanisms are largely in place.

Rajinder Sahota, deputy executive officer of the California Air Resources Board, contributed to this article.

This article is republished from The Conversation, an independent nonprofit news site dedicated to sharing ideas from academic experts. 

It was written by: Daniel Sperling, University of California, Davis.


Read more:

First solar canal project is a win for water, energy, air and climate in California

How do floating wind turbines work? 5 companies just won the first US leases for building them off California’s coast

Daniel Sperling receives funding from several foundations and government agencies, is a board member of the California Air Resources Board, and a member of the Board of Directors of the Southwest Energy Efficiency Project, an NGO.