Wilkes Center Announces Top Three Finalists for Climate Launch Prize

Wilkes Center Announces Top Three Finalists for Climate Launch Prize


September 15, 2025
Above: The three finalists for the Wilkes Climate Launch Prize

A company that makes safer, greener  building materials; an animal-free protein growing technology; and a technology for resource recovery from wastewater  are among the top three climate solutions that could win the $250,000 prize.

On Wednesday, September 24, the Wilkes Center for Climate Science & Policy at the University of Utah will host a public reception to announce the winner and runners up of its $250,000 Climate Launch Prize.

Representatives for the top three finalists – Björn Söderberg, co-founder of Build up Nepal; Jean Louwrens, CEO and co-founder of De Novo Foodlabs; and Margaret Lumley, founder & CEO of Roca Water – will be recognized.

The announcement and reception is open to all.  Please RSVP here.

The annual Wilkes Climate Launch Prize highlights top global ideas for combating climate change by elevating and honoring innovative climate solutions. The U prize aims to accelerate worldwide progress and encourage technological advances to develop effective climate change solutions quickly for the benefit of people and ecosystems worldwide.

The 2025 Wilkes Climate Launch Prize received over 1,100 submissions, compared with just 215 submissions in 2024.  (See an interactive map of applicant locations)

Read more about the three top finalists:

Build up Nepal

Location: Kathmandu, Nepal

Build up Nepal is transforming the construction industry in South Asia by replacing polluting coal-fired bricks with our climate-friendly eco-brick technology. Compared to traditional fired bricks, our solution reduces CO2 emissions by 75%, air pollution by 90%, cuts construction costs by up to 40%, and importantly, is disaster-resilient. Our model supports entrepreneurs to start micro-enterprises that construct affordable, safe homes and create local jobs, helping build resilient communities. By empowering 200 local entrepreneurs, the solution has already built 11,000 homes, avoided 111,000 tonnes of CO2 emissions, and created 1,600 green jobs, demonstrating its scalability and transformative potential.

De Novo Foodlabs

Location: Raleigh, North Carolina

De Novo Foodlabs is revolutionizing food protein production by using precision fermentation (PF) to create essential proteins with engineered microorganisms—no animals required. Our first focus is milk proteins, with high-yield yeast strains already developed for our launch product. Now, we’re taking the next leap: expanding our PF platform to not just lower emissions, but to actively capture and remove CO2 from the atmosphere. This breakthrough would make our process net carbon negative, enabling protein production that helps reverse climate change. Our technology also paves the way for the broader PF industry to become a powerful tool for carbon capture.

Roca

Location: Alameda, California

Roca is transforming wastewater treatment and nitrogen management through a novel electrochemical process that selectively recovers ammonia from wastewater as nitrogen fertilizer. Our technology addresses two major climate challenges: (1) reducing nitrogen pollution that leads to eutrophication and nitrous oxide (N₂O) emissions, and (2) decarbonizing fertilizer production by replacing energy-intensive Haber-Bosch ammonia synthesis with ammonia produced from wastewater. Our mission is to create a new standard for wastewater management to move beyond “dilute and dispose,” to embrace “recover and reuse,” unlocking both environmental and economic value without compromise.

About the Wilkes Center for Climate Science & Policy

The Wilkes Center leverages the University of Utah’s unique position and environment to drive world-class research on climate change forecasting, impacts, and solutions and places this science in the hands of decision-makers. Drawing on multidisciplinary centers of excellence at the U, the Wilkes Center strives for practical, integrative, and solutions-oriented research that can translate into policy around climate extremes, including wildfire and drought, air quality, natural ecosystems, carbon and water cycling, human environment, and health. The center is fostering educational and research training programs that support climate innovation and developing a new generation of solution-oriented leaders.

Prize Announcement Information: 

DATE: Wednesday, September 24
TIME: 5:00 PM reception, 5:30 PM announcement
LOCATION: L.S. Skaggs Applied Science Building, Suite W1204, 275 S University Street Salt Lake City, Utah 84112
FOOD: Hors d’oeuvres and refreshments provided.
PARKING:  Free parking will be available on President Circle and Lot 2, southeast of the L.S. Skaggs Applied Science Building. (see map below)
RSVP: The event is open to all, but please RSVP.

‘Greatest honor I could possibly receive’

'Greatest honor I could possibly receive'


September 12, 2025
Above: Phyllis "Lissy" Coley at the newly named Phyllis D. Coley Trail on Barro Colorado Island, Panama. Credit: Jorge Aleman

"I first went to Barro Colorado Island in 1975, where I did my thesis, postdoc and many more years of research, most with Tom," says Phyllis "Lissy" Coley, referring to her late partner and colleague in the School of Biological Sciences Tom Kursar. The Island is central to the famed Barro Colorado Nature Monument, the most intensively studied tropical forest in the world.

 

"The trails," she continues, "were all named after famous biologists, and there was a strong sense that we were building on the legacy of 50 years of pioneering research. It was humbling. And the trail names were how we navigated the island and shared the location of wonders with other researchers. So to have a trail renamed for me is the greatest honor I could possibly receive."

Coley recently returned from the Barro Colorado Island (BCI) where the Smithsonian Tropical Research Institute (STRI), a unit of the Smithsonian Institution headquartered in Panama City, Panama, furthers the understanding of tropical nature. The occasion? To witness the renaming of seven trails to honor Coley and six others recognized for their dedication, courage and discovery. The Phyllis D. Coley Trail, formerly named for the American Museum of Natural History, is trail #19 (see map).

Of the seven individuals honored, Coley is one of two still living.

100 years of research

On the trail: Lissy Coley with sister Kitty Coley. Credit: Jorge Aleman

"The idea to thoughtfully rename a subset of trails gained momentum as we prepared to celebrate 100 years of research on Barro Colorado Island," said STRI Director Joshua Tewksbury who emcee'd the hybrid (in-person/online) event August 31. "But it took a truly dedicated team to make this vision a reality. ...These trails will now carry their names and with them, their stories. As we walk them, we’ll remember not just what they did, but who they were and are — their courage, their curiosity, their care. This is more than a tribute. It’s a promise. A promise to keep their legacies alive, to continue the work they started, and to ensure that future generations know the names of those who make this place extraordinary."

Of Coley, Tewksbury said that her "research on plant defenses reshaped our understanding of biodiversity, [and] continues to inspire new generations of scientists. Her work links rainforest health to human health — a reminder of how deeply connected we all are."

A Distinguished Professor Emerita of Biology at the University of Utah, Coley is a current STRI Research Associate. She began her career on BCI as a doctoral student, drawn to the rich biodiversity and intense biotic interactions of tropical rainforests.

In the early 1980s, she conducted pioneering research on key ecological questions: how plants that are using the same resources can coexist in hyper-diverse communities, and why such diversity evolved. Her influential "Resource Availability Hypothesis" reshaped scientists' understanding of the trade-offs plants face when investing in defense.

Linking rainforest health with human health

"This foundational research," wrote STRI staff scientist Erin Spear when seeking approval for the naming honor on Coley's behalf, "led to the launch of the Panama-based International Cooperative Biodiversity Group (ICBG), a drug-discovery initiative that assessed whether the array of chemical compounds plants produce to prevent being eaten could be harnessed to treat tropical diseases, such as malaria and leishmaniasis — linking the health of Earth’s dwindling rainforests to human health. The ICBG also strengthened Panama’s scientific community by training students, building research infrastructure, and eventually integrating into the national institute INDICASAT," a research institute in Panama City. "Coley’s prolific and inspiring career continues through the many researchers she mentored."

Coley's partner Tom Kursar who died in 2018 accompanied Coley for years to BCI to plumb the depths of cutting-edge research into tropical forestry and its importance to human welfare while training students to conduct research in the tropics. The duo established their own foundation to bridge their own resources in the U.S. with those of Panama's to promote, along with STRI, its mission to understand the "present and past biological diversity by increasing public awareness of the beauty and importance of tropical ecosystems."

The Coley-Kursar Endowment in the U's School of Biological Sciences celebrates the legacy of ecological research and graduate student training by Coley and Kursar whose outreach with communities in Central and South America is legendary. The endowed funds support graduate students conducting field studies.

'tromping the trails'

Coley is deeply moved by the trail naming. She references the iconic, seemingly eternal giant Anacardium (wild cashew) root snaking across the stream and trail, now named for her. "I am in the American Academy of Arts and Sciences as well as the National Academy of Sciences," she says, "but those honors pale in comparison to having ‘my trail’ in the beautiful forest that filled me with wonder and shaped my career."

That wonder with which she reconnected during her recent trip to her beloved Panama for the event was especially meaningful this time. She was able to scatter the ashes of her beloved partner at the site, bringing Tom full circle to the place they worked in and cherished together.

"Fifty years ago I walked on trails named for pioneering scientists who worked 50 years before me," says Coley. "And I hope in 50 years there will still be scientists tromping the trails, and that some might admire that marvelous Anacardium root crossing Coley Trail at 150m."

By David Pace

Complete list of those honored with the renaming of a trail:

Oris Acevedo Trail, formerly Balboa Trail
Cabo Marcelino Castillo Trail, formerly Cima Trail
M. Agnes Chase Trail, formerly Conrad Trail
Phyllis D. Coley Trail, formerly AMNH Trail
Marcos José García León Trail, formerly Game Warden Trail
Adela Gómez Trail, formerly Lake Trail
Elisabeth K. V. Kalko Trail, formerly Harvard Trail

Mysterious gamma-ray explosion unlike any discovered before

Mysterious gamma-ray explosion unlike any discovered before


September 11, 2025
Above: The orange dot at the center is the powerful explosion that repeated several times over the course of a day. Credit: ESO/A. Levan, A. Martin-Carrillo et al.

No known scenario can explain the source of a recent gamma-ray burst, which originated outside our galaxy and lasted 100 to 1,000 times longer than most bursts.

Tanmoy Laskar

Astronomers have detected an explosion of gamma rays that repeated several times over the course of a day, an event unlike anything ever witnessed before. The source of the powerful radiation was discovered to be outside our galaxy, its location pinpointed by the European Southern Observatory’s Very Large Telescope (VLT). Gamma-ray bursts (GRBs) are the most powerful explosions in the universe, normally caused by the catastrophic destruction of stars. But no known scenario can completely explain this new GRB, whose true nature remains a mystery.

GRBs are produced in catastrophic events like dying stars exploding in powerful blasts or stars being ripped apart by black holes. These celestial flashes of gamma rays usually last just milliseconds to minutes, but this signal—GRB 250702B—lasted about a day.

“This immediately alerted us to the unusual nature of this explosion,” said Tanmoy Laskar, assistant professor in the Department of Physics & Astronomy at the University of Utah and co-author of a study on this event recently published in The Astrophysical Journal Letters.

The initial alert about this GRB came on July 2, 2025, from NASA’s Fermi Gamma-ray Space Telescope. Fermi detected not one but three bursts from this source over the course of several hours. Retrospectively, it was also discovered that the source had been active almost a day earlier, as seen by the Einstein Probe, an X-ray space telescope mission by the Chinese Academy of Sciences with the European Space Agency (ESA) and the Max Planck Institute for Extraterrestrial Physics. Such a long and repeating GRB has never been seen before.

The gamma-ray discovery only gave an approximate location in a very crowded part of the sky filled with stars from our Milky Way, making it difficult to locate the source of the flash. To pinpoint the precise position of its origin, the team turned to ESO’s VLT.

“Before these observations, the general feeling in the community was that this GRB must have originated from within our galaxy. The VLT fundamentally changed that paradigm,” said Andrew Levan, astronomer at Radboud University, The Netherlands, and co-lead author of the study.

Using the VLT’s HAWK-I camera, they found evidence that the source may actually reside in another galaxy and later confirmed this using the NASA/ESA Hubble Space Telescope.

“What we found was considerably more exciting: The fact that this object is extragalactic means that it is considerably more powerful,” said Antonio Martin-Carrillo, astronomer at University College Dublin, Ireland, and co-lead author of the study. The size and brightness of the host galaxy suggest it may be located a few billion light-years away, but more data are needed to refine this distance.

The nature of the event that caused this GRB is still unknown. One possible scenario is a massive star collapsing onto itself, releasing vast amounts of energy in the process.

“Just like other GRBs, this event also left behind lower-energy light cascading across the spectrum, all the way from X-rays to radio waves,” said Laskar. “Traditional collapsing-star models seem to be able to explain this residual, fading light, but the still-unknown distance to the event makes it difficult to be sure.”

Alternatively, a star being ripped apart by a black hole could produce a day-long GRB, but to explain other properties of the explosion would require an unusual star being destroyed by an even more unusual black hole.

To learn more about this GRB, the team has been monitoring the aftermath of the explosion with different telescopes and instruments, including the VLT’s X-shooter spectrograph and the James Webb Space Telescope, a joint project of NASA, ESA and the Canadian Space Agency. Measuring the distance to the galaxy that hosted the event will be key to deciphering the cause behind the explosion.

 

Adapted from the European Southern Observatory

This research was presented in the paper “The day-long, repeating GRB 250702B: A unique extragalactic transient” (doi: https://doi.org/10.3847/2041-8213/adf8e1), published in The Astrophysical Journal Letters.

Find a full list of coauthors here.

 

David Stroupe Named CSME Director

New Director of CSME David Stroupe


September 9, 2025
Above: David Stroupe

The University of Utah College of Science and College of Education have announced David Stroupe’s appointment as director of the Center for Science and Mathematics Education (CSME).

A program based in the College of Science, CSME works to enhance K-12 math and science instruction, undergraduate support and increase access that promotes success in science and mathematics for K-12 and undergraduate students.

Stroupe, interim associate dean for research and professor of educational psychology in the College of Education, will lead the center under this inter-college partnership, with a focus on improving graduation and job placement. The center also aims to support broader positive outcomes at the U and in classrooms across the state.  

Stroupe's appointment is enthusiastically and jointly supported by College of Science Interim Dean Pearl Sandick and Education Dean Frankie Santos Laanan.

"In partnership with the College of Education, I’m very happy to bring David Stroupe on board as Director of the Center for Science and Mathematics Education," said Sandick. "David’s leadership arrives at a pivotal moment, as STEM education undergoes rapid transformation to meet shifting societal demands and address the evolving technological landscape. I look forward to fruitful collaboration as we work together, with partners on campus and beyond, to promote student success in science and mathematics from K-12 through college."

“The CSME has long stood at the intersection of research, teaching, and public engagement—where ideas meet action,” said Dean Laanan. “Dr. Stroupe brings a mix of scholarly rigor and visionary leadership. His recent election as a Fellow of the American Association for the Advancement of Science is a testament to his national impact in science education. The College of Education and the College of Science are poised to impact AI literacy across the state, and Dr. Stroupe’s appointment signals a bold step forward in how we prepare educators, empower instructors, and inspire the next generation of STEM learners across Utah.”

Stroupe will kick off his first CSME Exchange on September 22 with Rebekah Cummings, Digital Matters Director for the U, with a faculty presentation on AI in the classroom. 

To learn more about CSME, visit csme.utah.edu

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Field Notes: Large Carnivores of Sarıkamiş in Turkey

Field Notes: Large Carnivores of Sarıkamiş in Turkey


September 8, 2025
Above: A 36 kg male wolf (Canis lupus) named "Shaggy" by taggers with the environmental organization Kuzey Doga. Not more than five minutes after being tagged, the animal was gone.

Nathan Murthy, a senior at the University of Utah majoring in

Earth and Environmental Science recently returned from doing field work in Turkey. 

This is the second of two reports he has filed.

If you were to look at a map of the town of Sarıkamiş in Eastern Türkiye, you would think that its coniferous forests extend forever.

A good example of the forest edges here. Everything eventually surrenders to the trillions of blades of grass. Credit: Nathan Murthy

But when you zoom out, it becomes apparent that the town, perhaps best known today for its ski resort, stands alone. A stronghold of pine trees in a sea of grass.

Amongst these forests are some of the world's top predators: brown bears (Ursus arctos), gray wolves (Canis lupus), and lynx (Lynx lynx). Using GPS Collars, the environmental organization KuzeyDoğa has been tracking all three. I was lucky enough to join these operations.

It takes a team to catch these animals: my professor Çağan Şekerçioğlu who started KuzeyDoğa, wolf biologist professor Josip Kusak, to nail down the methods, and biologist Emrah Çoban, who works tirelessly to manage the site. Put all this together, along with numerous volunteers, and you get the first large carnivore project in Türkiye. Since 2011, 179 animals have been tagged (103 brown bears, 50 wolves, 25 Eurasian lynx, and one wild boar), each individual contributing valuable data for conservation.

Curious about how it all works? Join me from my first day on.

Traplines and Barbeque

Driving around with Dr. Kusak and Nate Roberts checking the traps. Credit: Nathan Murthy

Breakfast is at 6 am. Everyone discusses terms like "traplines," "the last forest," and "barbecue." I only knew the last term. Traplines are self-explanatory:  traps dispersed through a certain area. The last forest is the location of one of the traplines to our northwest. There are also traplines in "Hamamlı" to the East, the "National Park" to the north, the "West Forest" to the (fill in the blank), and the "Central Forest" directly in the middle. All told there are five traplines and two cars to check them daily.

Dr. Kusak, Nate Roberts, a University of Utah master's biology student, and I traverse the bumpy dirt roads of the West Forest. We suddenly stop. "Nothing," Kusak says.

"Nothing," Nate confirms.

We continue driving along but I am completely lost. Soon enough, I learn we have passed a wolf trap. Eventually, I learn the design. Underground, there's a rubber foothold with a trigger point in the center and a chain attached to it . . . and an anchor. Aboveground, a sponge doused in rotting meat, liver and fecal matter. In theory, wolves will investigate the pungent sponge and trigger the foothold. The anchor, dragging behind the fleeing animal, will catch on a root or a bush, stopping them, literally, in their tracks.

We check the remaining traps all with the same result, nothing.

Then comes the final term I heard at breakfast: "barbecue." We eat grilled meats and homemade cake followed by a leisurely volleyball session.

The day is over, or so I think.

The Ghost in the Cage

Dispersed throughout the forests are box traps, large, metal boxes with sliding doors. Within each box is a small wire that shuts the doors when triggered. The trap is designed to alarm us when it is set off. At about 10 p.m. that night, the alarm goes off. We rush over immediately.

A 360 kg brown bear (Ursus arctos) workers named "Karadayı." The collars automatically fall off the bear’s neck at the end of two years of monitoring. Credit: KuzeyDoğa Society.

Within the trap is a Caucasian lynx. We tranquilize the animal and carefully lay it on a blanket. We take blood samples and measurements. Finally, we place a GPS tracking collar around its neck. Then, we sit and wait for it to gain consciousness and return to the forest. It is difficult to see an animal like a lynx up close, to feel it with your own two (gloved) hands. It’s surreal in that these animals are ghosts. They may never be seen by anyone again.


The Bear Incident

I assume our luck will run dry for several days, but it doesn't. The next day, our other car finds a small brown bear cub stuck in a trapline. We rush to the other car to see it. When we arrive, the bear is still under anesthesia. Still, we drive carefully in our approach not to startle it.

The second I open my door I hear a loud roar. The team runs back to our car, but the back door is still open. The bear tries its best to infiltrate. Luckily, our car horn scares it away.

Bears are no joke, but after it is all done and everyone is safe, all we could do was laugh.

Wolves and Picnicking

A familiar face here in faraway Sarıkamiş. Credit: Nathan Murthy

Several days later while routinely checking a trapline Josip announces, "Trap missing!" In a nearby bush is a 36-kg gray wolf. Josip quickly tranquilizes it, like the tactician he is. As we bring it back and lay it down, I'm thinking that it kinda just looks like a shaggy stray dog.  It turns out the wolf is in the process of shedding its winter coat.

"We should name it Shaggy," I say.

"Shaggy, sounds good, " Josip agrees.

In the KuzeyDoğa database, this wolf will now be known as "Shaggy." As Josip completes other tasks, Nate and I waited near the wolf while it is recuperating. We chat over a picnic of cheese, olives, cookies and coffee. He tells me how he went to college when he was younger, didn't like it but ended up starting at the U several years later at the age of 28. He loved it so much that he came back for a master’s degree at 32.

To me, Nate is a great example that it is never too late to invest in your education. It has clearly paid off for him; he is planning on publishing his work on bear rubbing tree behavior. We continue to chat while the wolf gets to his feet, eventually disappearing into the forest.

Another ghost.

The Dump Bears of Sarıkamiş

The bears in this photo are of various sizes. The dump and its food resources bring them all together. Credit: Nathan Murthy

At this point, the large carnivore project is essentially finished. We have no more wolf collars. But there is one last thing I want to see: the trash dump. Since Sarıkamış' forests are so small, the natural resources available for the bears are limited. Every single night, bears make their way to the trash dump where they feed on food scraps.

At 10 p.m. we pull up to the site and make our way into the dump. I put on a mask to alleviate the putrid smell of burning trash.. As we drive through plastic, food scraps and glass, many bears come into sight, revealing themselves from behind the smoke. Countless brown bears lay out on the trash, searching for food. Some of them are big, over 200 kg, and several are cubs. Numerous stray dogs join in on the feast too. They don't seem to mind each other's company due to the availability of food.

I feel conflicted. To me, brown bears are impressive animals to be respected, but here they behave like raccoons. We count 53 bears, each of them scurrying off as we pass by, almost like they are ashamed to be there, but they are doing what they can to feed themselves. Like all creatures, including humans.

Survival

During my time in Sarıkamış, I got to see some of the world's most notorious animals. And well  . . . they weren't what I expected them to be. They were scared; their only desire was to survive. And with human-wildlife conflict becoming ever more common, it's vital to continue this work.

We need carnivores to provide ecosystem services such as wild herbivore population control and the removal of carrion to keep our forests healthy. At the same time, I learned that reality is often different from perception. People, especially in the U.S., are afraid of large carnivores. But I think if we took a little bit more time to understand them, we'd realize that they exhibit fear. They are afraid.

And, as with us, the first order of the day for these animals, notorious or not, will always be to survive.

Nathan Murthy

 

by Nathan Murthy

Nathan is a senior in Earth & Environmental Science at the University of Utah and a Wilkes Scholar awarded by the U's Wilkes Center for Climate Science and Policy where he was on the winning team of the Climate Solutions Hackathon focused on water resources. He was also a Lighting Talk and Poster Contest winner at the Wilkes' Summit.

This is the second of two reports from his research in Turkey. You can read the first one here and watch the video of his experience here.

 

A molecule that enables microbes to eat methane

A molecule that enables microbes to eat methane


September 4, 2025
Above: A model of methylocystabactin (gray) binding an iron atom (orange). Credit: Andrew Roberts and Aaron Puri

U chemists discover critical step bacteria take to oxidize potent greenhouse gas and how they interact in larger microbial communities

Aaron Puri

Because of its potent greenhouse properties, methane gas is a significant contributor to climate change. It also feeds microbes known as methanotrophs that convert the gas into carbon dioxide and biomass, but scientists have been unsure how these microbes get all the nutrients they need to accomplish this task.

Now, a University of Utah chemistry lab has developed a novel technique for studying these microbial communities and has used it to discover a new molecule that enables methane-oxidizing bacteria to acquire iron from the environment, which is important for understanding how these organisms sequester methane, keeping it out of the atmosphere.

The findings, to be published Friday in PNAS, also provide information that could be useful for harnessing methanotrophs to convert methane into useful chemicals and liquid fuels, according to principal investigator Aaron Puri, an assistant professor of chemistry and member of the U’s Henry Eyring Center for Cell & Genome Science.

“Understanding these types of mechanisms that they use to interact with their environment is critical if we’re going to optimize using them for useful tasks,” Puri said. “We’ve also identified a key link between how iron exists on Earth and how gases are cycled in the atmosphere, which is through these methane-oxidizing bacteria, and more specifically through this new molecule that we’ve discovered.”

Methane, or CH4, the simplest hydrocarbon molecule, is the main ingredient of natural gas that fuels home appliances. This gas is also released from decomposing organic matter, commonly at landfills or swamps. It packs about 80 times more heat-trapping power in the short term than carbon dioxide, a longer-lived gas that is the main driver of anthropogenic climate change.

Microbes naturally break down CH4 through an oxidation process that yields carbon dioxide and organic compounds.

Puri’s study introduces a new tool called “inverse stable isotope probing–metabolomics,” or InverSIP, which links genes found in microbial DNA with the actual small molecules called metabolites those genes produce. Using this method, the Puri Lab discovered a previously unknown iron-grabbing molecule made by methane-eating bacteria. They dubbed the molecule methylocystabactin.

It functions like a claw that pulls iron from the environment and makes it available for enzymes that oxidize methane. But it gets even more interesting.

Read the full story by Brian Maffly in At the U

Oxygen came late to ocean depths during Paleozoic

Oxygen came late to ocean depths during Paleozoic


September 4, 2025

Thallium isotopes show O2 levels rose and fell at the ocean floor long after marine animals appeared and diversified half billion years ago, according to study of ancient marine sediments exposed by river cuts in Canada's Yukon

Chadlin Ostrander

The explosion of animal life in Earth’s oceans half a billion years ago during and after the Cambrian Period is commonly attributed to a substantial and sustained rise of free oxygen (O2) in seawater. Some researchers even argue for near-modern levels of ocean oxygenation at this time.

But O2 levels in Earth’s deepest marine environments fluctuated wildly long after the Cambrian, according to new research published by a University of Utah geologist with colleagues from other institutions.

Using stable isotope ratios of thallium (Tl) preserved in ancient marine mudrocks, the researchers reconstructed O2 levels between about 485 and 380 million years ago. This timeframe immediately follows the Cambrian rise of animals and even intersects the later rise of land plants. The findings, published this week in Science Advances, challenge some conventional views of ocean oxygenation, according to lead author Chadlin Ostrander, an assistant professor in Utah’s Department of Geology & Geophysics.

“It wasn’t like someone flipped a switch and the deep ocean became forever oxygenated,” Ostrander said. “Just a decade ago, it was thought that a deep ocean oxygenation switch was flipped around 540 million years ago. Our new dataset pushes that forward in time by at least ~160 million years.”

To reach these findings, Ostrander and his collaborators analyzed the stable isotopes of thallium—a heavy metallic element that occurs in trace amounts in Earth’s crust—contained in ancient marine sediments they recovered from Yukon, Canada. Very few processes can strongly fractionate Tl isotopes, that is, partition them in ways that result in different ratios.

The strongest fractionations today occur in deep marine ferromanganese deposits. O2 must accumulate in deep marine waters to stabilize these deposits, according to Ostrander. Thallium isotope ratios in the new study were rarely strongly fractionated, meaning these O2-dependent deepwater deposits were also rare.

“We do find some evidence of O2 building up in the deep ocean, but only for very brief periods of time,” Ostrander said. “Even at the youngest end of our dataset, the ocean seems to plunge back into an episode of widespread anoxia.”

 

Read the full story by Brian Maffly in @ The U

On the same team

On The Same Team


September 3, 2025

Safety regulations are often treated with an air of annoyance by those required to follow them. A roadblock to hurdle, yet another extra step that must be taken to get where they want to be.

Brandon Newell

But the truth is that every one of those regulations exists due to a tragedy that occurred without it. Brandon Newell cannot stress this importance enough: that safety rules are in place to protect workers, like guardrails. Those who enforce those rules are defenders, part of the team working towards the same goal of getting everyone home safe at the end of the day.

Newell got his start in safety working at Hill Air Force Base where he would take on the role of inspecting any explosives the base would be working with. He was simultaneously using his GI bill to finance his education at Weber State University in Ogden, the combination paving a natural road that led him to the Environmental Health & Safety (EHS) Office here at the U. Since then, he has worn many hats at the EHS, from lab inspector to occupational safety specialist to his current position managing the occupational safety team. 

The rigorous work this team does may come as a surprise, as the U rarely makes the news in terms of these sorts of accidents. This is the greatest irony of work within safety. The more efficiently it is carried out, the less important it seems as nothing is going wrong. 

But such prevention is constantly carried out. As one of many examples of something they’ve caught, Newell describes that “there are many peroxide forming chemicals that can crystallize and explode upon contact when they get old. Doing that on a recurring basis over the last five to seven -years. . . lab personnel have that hazard at the forefront of their minds.” 

It may not lead to the most exciting story headlines, but it’s far more preferable than an injured student, faculty or staff member.

Silent stories like those peroxides happen across campus, from engineering workshops to research labs, to simply walking around campus. To pursue further prevention, the EHS organizes a “Walk After Dark” event every year, bringing all students who wish to participate to jaunt around campus and identify any areas of issue. If there are lights out, damaged railings or lighting needed around potential tripping hazards, EHS wants to know about it. The annual event  symbolizes the EHS’s goals and values: to work together with students to create a safe campus environment.

Brandon Newell closes by stating that “we’re on the same team. We don’t enjoy having to be the people that are forcing compliance, forcing regulations. These are your rights, and we’re here to help make sure that your rights are not violated.”

by Michael Jacobsen

This is the third in a series of periodic spotlights on staff who work in the Department of Environmental Health and Safety at the University of Utah. You can read more about safety and wellness, under the direction of David Thomas in the College of Science here. Read the first story in the series about Christin Torres here, and the second story about Emily O’Hagan here

Harold Blum: Combinations and Connections

Harold Blum: Combinations and Connections


August 28, 2025
Above: Harold Blum

As any researcher will tell, the most daunting challenge of their field is often to find a strong connection between the hard work they do and the funding needed to make it happen.

It can be a difficult bridge to build, which is why the National Science Foundation’s (NSF) CAREER Program provides grants to talented individuals to elevate their efforts to new heights. Harold Blum is among these awardees, having secured $450,000 in funding to support his research.

This is not Blum’s first connection with the foundation. Under the mentorship of department chair Tommaso de Fernex, Blum held an NSF Postdoctoral Fellowship here at the University of Utah. After continuing and finishing said fellowship at Stony Brook University, he circled back to take up an assistant professor position, where he worked for many years.Blum’s research focuses on algebraic geometry, specifically in the area of higher dimensional shapes. A particular aim of his that the grant is financing is to develop theory for constructing parameter spaces of Calabi-Yau manifolds, a concept used heavily in string theory. But that’s not to say all his work is 6th dimensional, as algebraic geometry has far-reaching applications. “One of the reasons I find this field so interesting is that it combines so many aspects of mathematics,” Blum explains, continuing that “modern algebraic geometry research involves inputs from mathematical physics, differential geometry and number theory. As well, algebraic geometry has been applied to areas including cryptography, computer vision, and optics.”

With such a varied combination of fields, a strong interconnected community is required to bring in the necessary expertise. Blum has been delighted to find that community at the U, celebrating it as “a hub for research in algebraic geometry since the 1980s.” He’s enjoyed these connections with the faculty, postdocs and graduate students that share in his field, as well as those with his students. The community of mathematics in general is something Blum views very fondly, as he’s “learned so much from all my collaborators, and it’s simply more exciting doing math with other people than it is doing it alone.”

Blum’s journey will be taking him away from the U to Georgia Tech at the end of this academic year, and while we’re sad to see him go we also applaud the fantastic work he did here and the awarding of his grant. 

And it’s not like his influence is gone. Those community connections will always hold strong, collaborative work will continue, and we eagerly await what new heights his research will take him next. ~Michael Jacobsen

by Michael Jacobsen

You can read about Harold Blum's colleague Anna Little who is also recipient of the prestigious NSF Career Award here.

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The future of science at the U

Cool Science Radio: Future of Science


August 25, 2025
Above: L. S. Skaggs Applied Science Building, University of Utah. Credit: Todd Anderson

The University of Utah has just unveiled the final piece of its Crocker Science Complex, a $97 million Applied Science Project that unites the renovated historic William Stewart Building with the new L. S. Skaggs Applied Science Building.

Pearl Sandick

 

 

Together with the existing Crocker Science Center, the complex creates a 275,000-square-foot hub for research, teaching and collaboration.

Pearl Sandick, interim dean of the College of Science and professor of physics and astronomy, shares how these facilities will advance everything from particle physics to chemistry, biology and engineering. She explains what makes the complex unique, how it will change the student experience and why investing in state-of-the-art STEM spaces matters for Utah’s future.

Sandick also reflects on the blend of history and innovation at the heart of the project and the role the new complex will play in shaping both science education and the state’s economy for years to come.