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Clark Gray

@clarklgray.bsky.social
1.5K followers 533 following 153 posts

Professor of Geography and Environment, UNC-Chapel Hill clarkgray.web.unc.edu

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Reposted by Clark Gray
Charles Kenny @charlesjkenny.bsky.social · 12h
We are letting thousands die without even the recognition that their deaths happened. The humanitarian system cannot work more effectively if it does not know where it is working and where it is not, and lack of data is freeing everyone (donors, implementers, perpetrators) from accountability.
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YY Ahn @yyahn.bsky.social · 29/09/2026
UVA School of Data Science has two open rank faculty positions open this year. Join us! - NLP: apply.interfolio.com/191213 - Data and Society: apply.interfolio.com/191214
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Rebecca R Helm @rebeccarhelm.bsky.social · 30/09/2026
Magical creatures don’t exist, eh? Roughly 400 million years ago, before the birth of trees, there were giant mystery cones called “Prototaxites,” which grew nearly 30 feet tall. We literally have no idea what they were. Plant: no Mushroom: no Animal: no Tell me this isn’t a little bit magic
Sunset with giant mystery cones Prototaxites https://www.ibtimes.co.uk/prototaxites-fossil-explained-why-this-prehistoric-colossus-still-baffles-scientists-1773173
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Trevor A. Branch @trevorabranch.bsky.social · 22h
When you are convinced it's AI generated and then discover it is not and now you doubt everything
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Proceedings of the National Academy of Sciences @pnas.org · 29/09/2026
One of the most-viewed PNAS articles in the last week is “Spatially refined satellite gravimetry captures human signatures in global terrestrial water storage trends.” Explore the article here: ow.ly/ytuh50ZSNBp For more trending articles, visit ow.ly/YSuq50ZSNBo.
A multi-part figure with panels A to I showing bar graphs of results from continental-scale multivariate regression and local bivariate spatial association, used for TWS trend attribution.
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Reposted by Clark Gray
Proceedings of the National Academy of Sciences @pnas.org · 29/09/2026
As the climate warms, compound drought and heat wave events are becoming more frequent and intense across the contiguous United States. Areas at high risk for such events are disproportionately poor, unhealthy, and rural. In PNAS: ow.ly/nqfA50ZSNx3
Drought-damaged corn and cracked soil.
CREDIT: Bob Nichols/USDA.
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Mongabay @mongabay.com · 29/09/2026
A new global database mapping 40 years of satellite and ocean data reveals that compound marine heatwaves and acidification extremes occur more frequently than expected. Experts warn more research is urgently needed to assess their impacts on marine life and fisheries. By María Paula Rubiano A.
mongabay.cc
New global maps chart 40 years of ocean heat and acidification extremes
Between 2014 and 2015, a marine heatwave known as “The Blob” warmed an area of the Pacific Ocean larger than the United States and Mexico combined. The massive event fueled toxic algae blooms,…
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Clark Gray @clarklgray.bsky.social · 29/09/2026
1-year remote population health postdoc at Stanford on "the causal effect of shingles vaccination on cognition, the health effects of sodium intake, and population health issues more generally."
careersearch.stanford.edu
Social Science Research Scholar (1-Year Fixed Term) (Remote Opportunity)
The Division of Primary Care and Population Health seeks to serve our community through caring, learning, and innovation for the whole person through all stages of live. While engaged in practice and ...
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Jeremy Markovich @ncrabbithole.com · 25/09/2026
once again, Highway 12 on Pea Island in the Outer Banks is basically sitting in the ocean because of a nor'easter
NCDOT picture of Highway 12 on Pea Island
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Inside Higher Ed @insidehighered.com · 25/09/2026
UNC Chapel Hill Trustee Blames Law Professor for Infrastructure Budget Woes bit.ly/4z0C2bW
A photo of UNC Chapel Hill’s campus.
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Karen Benjamin Guzzo @karenguzzo.bsky.social · 25/09/2026
UNC Sociology is hiring an OPEN-RANK position for a Population Health and Aging scholar! We are especially interested in more advanced and senior scholars. Full position details, qualifications, and application instructions are available at: unc.peopleadmin.com/postings/325...
Position Summary: The Department of Sociology at the University of North Carolina at Chapel Hill invites applications for an open rank (tenure-track) faculty position to begin July 1, 2027. We are seeking candidates with research and teaching interests in population health and aging. This is the first of an anticipated five related searches over the next four years in a new UNC-Chapel Hill initiative on biosocial health and aging. We seek applications from scholars who exhibit a record of strong and innovative research and excellence in teaching. Candidates are expected to hold a Ph.D. in Sociology or a related field by July 1, 2027.
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Bernoid @bernoid.bsky.social · 25/09/2026
Morning! #FungiFriday #FungiFriends
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Clark Gray @clarklgray.bsky.social · 24/09/2026
"The new renovation would effectively cover the area now known as the Pit and replace it with a hardscape platform." 😢
dailytarheel.com
Board of Trustees approves renovation of the Pit
The board approved an approximately $10 million renovation project that would cover the Pit with a wooden platform.
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Clark Gray @clarklgray.bsky.social · 24/09/2026
iussp.org/en/ipc2029-c...
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Daniel de Kadt @dandekadt.bsky.social · 24/09/2026
Very excited: Cornell Arts & Sciences seeks up to 5 postdoctoral scholars working on AI and the humanities/social sciences. Not involved in selection but could serve as a faculty sponsor if you are working on topics related to ~"how to do social science in the age of AI." Happy to chat.
academicjobsonline.org
Cornell University, College of Arts and Sciences Fellowships
Job #AJO32791, Postdoctoral Associate, AI in Social Sciences & Humanities, College of Arts and Sciences Fellowships, Cornell University, Ithaca, New York, US
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Sara Ronnkvist @sararonnkvist.bsky.social · 24/09/2026
Beyond excited to announce that Grace Venechuk and I had a paper come out yesterday! We used 9 (!!) publicly available data sources to analyze associations between population health, wildfire smoke exposure, and county-level occupational compositions. link.springer.com/article/10.1...
link.springer.com
Fired up for work: Examining the relationship between environmentally-vulnerable work and population health outcomes in the context of wildfire smoke exposures - Population and Environment
Despite significant attention towards spatial health disparities and the mechanisms underlying them, less is known about how wildfire smoke may be associated with these disparities and how it may inte...
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Dakota Smith @weatherdak.bsky.social · 24/09/2026
Hurricane Polo is looking extraordinary tonight. Sheesh.
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Paul Byrne @theplanetaryguy.com · 23/09/2026
Another stunner from JWST—this time part of a *much* larger scene I'll post later. This portion is made up of stars and protostars in a cluster about 1,000 lightyears from Earth. The bright, multi-point features are nearby stars. The smaller features in the background are other galaxies.
From the source: "A star-forming nebula that contains young stars called protostars. Two of these protostars are shooting out long jets that are colliding with the nebula, creating glowing, colourful outflows. A few other protostars create orange and red areas in the nebula. Most of the image is covered by blue gas, with brighter areas, denser clouds and dark gaps; the bottom-left corner contains greenish-yellow gas."
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Zeke Hausfather @zekehausfather.com · 23/09/2026
Updated version of the impacts map that incorporates the latest runs from 13 dynamical models to refine the areas affected by this year's event:
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Population Association of America @popassocamerica.bsky.social · 23/09/2026
Register now for the first in our Virtual Workshop Series! 💻️ This 2 parter: Population and Environment Research will be on Oct. 6 and Oct. 13 and will cover the Three Applications of Public Population Data, and Linking Gridded Environmental Data to Public Population Data. buff.ly/tzmT2pl
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Karen Benjamin Guzzo @karenguzzo.bsky.social · 22/09/2026
@uncpopcenter.bsky.social is hiring a postdoc for our "From Biological to Social Processes" T32! Applications due Nov 20, 2026, preferred start date Jan 2027. Learn more about our postdoc training program: www.cpc.unc.edu/training/bio... Apply here: unc.peopleadmin.com/postings/325...
The Carolina Population Center at the University of North Carolina at Chapel Hill invites applications for a Postdoctoral Scholar position with the NICHD-funded T32 training program, ‘From Biological to Social Processes: Interdisciplinary Training in Life Course Research’. This program aims to promote and support interdisciplinary training of PhD students and postdoctoral scholars from both the social sciences and biological/health sciences.

The goal of this program is to train scientists to move across disciplinary boundaries and employ creative and integrative approaches to understanding the complex factors that influence health and health disparities across the life course. Trainees will have the opportunity to receive interdisciplinary mentorship and training in a wide array of methods and content areas, ranging from social inequalities to biological processes. Trainees will identify a co-preceptor team comprised of a mentor from their home discipline and another representing their new interdisciplinary interest area from among the current training faculty.

The initial term of appointment is one year, with a preferred start date in January 2027 (negotiable). Reappointment for a second year is possible with continued funding.

Interested applicants must apply through the UNC HR Link and submit the supplemental application package linked in the posting. Application materials are due by November 20th, 2026. 

Information about the postdoctoral training program and training faculty can be found on our website. Questions can be directed to the Training Program Manager, Margaret Swingler, at margaret.swingler@unc.edu.
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Corey Sparks @coreysparks1.bsky.social · 22/09/2026
I’m recruiting a PhD student to come work with me at UT San Antonio. I have 3 years of support, so this would be good for someone with a masters degree. If you’re interested in working on Bayesian methods in demographic research, spatial analysis, and using AI tools for social science research
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Heather Randell @heatherrandell.bsky.social · 18/09/2026
Journal editors: I just got an R&R with 3 reviews, and some of the reviews seemed a bit off to me and requested a LOT. I put text from each review into Pangram, which is supposed to be a high quality AI detector, and it appears that 2 of the 3 are AI generated. How do you handle stuff like this?
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Michael Clemens @mclem.org · 18/09/2026
"Spain's self-inflicted migration crisis" by the brilliant and trenchant Hein de Haas A concise and exposition of why border crises, a product of policy, happen and will continue to happen —>
heindehaas.substack.com
Spain’s self-inflicted migration crisis
What really drives migration from Morocco
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Казмонавт @kazmonaut.kzstan.com · 17/09/2026
new cat just dropped www.nbcnews.com/science/envi...
nbcnews.com
New wild cat species is identified for first time in 100 years, researchers say
A type of tiger cat, the animal is slender, spotted and smaller than a house cat. It lives in the Bolivian cloud forest.
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Karen Benjamin Guzzo @karenguzzo.bsky.social · 17/09/2026
@prbdata.bsky.social's 2026 World Population Data Sheet is here! It's interactive and lovely and full of all sorts of wonderful demographic data!
wpds.prb.org
World Population Data Explorer (2026 Data)
Explore population and health indicators for 200+ countries and territories.
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Christos Constantinidis @cconstan.bsky.social · 16/09/2026
After last year's collapse of NIH funding rates I thought things couldn't get any worse. Shifting to multi-year awards could mean that fewer funds would be needed to pay already active grants in 2026. I was wrong. With less than a month left in the fiscal year we are on pace for a new all time low.
Graph from https://grantwitness.org/nih/analyses/agency-pulse-nih-grantmaking
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VoxDev @voxdev.bsky.social · 16/09/2026
Because rural migrants are deterred far more by distance than they are drawn by higher pay, nearby towns – despite offering lower earnings than cities – end up absorbing far more migrants and doing more to reduce poverty, making them a decisive channel for inclusive urban growth.
KHDS baseline villages and urban destinations across Tanzania
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NOVAFRICA @novafrica.bsky.social · 15/09/2026
🚨 New article in the Journal of the European Economic Association “From Sea to Shore: The Impact of Ocean Acidification on Child Health” #AlexArmand @novafrica.bsky.social #NovaSBE and @ivankimt.bsky.social #BocconiUniversity 🔗 tinyurl.com/56bjk3cd 📄 lnkd.in/eQM8mzeP 🎥 lnkd.in/eyyq5JzD
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Science Magazine @science.org · 14/09/2026
Social science studies may promise anonymity, but new research finds participant identities often lurk in public data. scim.ag/46nOpTa
scim.ag
Social science studies may promise anonymity, but participant identities often lurk in public data
One-fifth of data sets intended to support replication breached privacy standards, study finds
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Michael Clemens @mclem.org · 14/09/2026
A federal judge just enjoined one of the US Administration’s sharpest attacks on international students. The ruling references research by me & my stellar co-authors six times. Facts matter. Facts are necessary for democracy, accountability, and the rule of law. Research delivers them.
storage.courtlistener.com
Memorandum & Order – #50 in Presidents' Alliance on Higher Education and Immigration v. United States Department of Homeland Security (D. Mass., 1:26-cv-13799) – CourtListener.com
District Judge F. Dennis Saylor, IV: MEMORANDUM AND ORDER ON MOTION FOR PRELIMINARY INJUNCTION. Plaintiffs' motion for APA § 705 relief, a preliminary injunction, or, in the alternative, summary judgm...
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Matt Barnum @mattbarnum.bsky.social · 14/09/2026
Contrary to what I sense is a vague conventional wisdom: the recent growth in educational attainment is not at all historically anomalous. lkatz.scholars.harvard.edu/sites/g/file...
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NBER @nber.org · 14/09/2026
Federal flood buyouts help households adapt to climate risk. But households of color receive at least 6 percent less compensation, with stark differences in where families relocate, from Kay Jowers, Lala Ma, and Christopher D. Timmins www.nber.org/papers/w35726
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Casey Ivanovich @ccivanovich.bsky.social · 10/09/2026
But this is starting to change! Extreme heat seasons have lengthened in about half of global land areas, and this lengthening is asymmetric. Most regions have experienced a larger expansion in either the months before or after their local heat season (analogous to spring and fall). (3/6)
Six panel figure showing maps of the change in the fraction of extreme heat events happening in the shoulder seasons. Top row (blue to red colorbar): Change in the fraction of annual events occurring in the pre-season from the early to late period. Middle row (blue to red colorbar): Change in the fraction of annual events occurring in the post-season from the early to late period. Bottom row (green to purple colorbar): Difference in the fractional change in shoulder season extreme heat events (post-season minus pre-season). Black shading indicates grid cells without a consecutive 3-month heat season.
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A Jean Stevenson @amandajean.bsky.social · 09/09/2026
Come learn about reproductive process models, demographic data, and more in Boulder or online Nov. 11-13. Apply to join me, @lesja.bsky.social, and legend Jane Menken, with talks from others working in this area. Being wrong about birthrates is easy. But being right isn't *too* hard and we'll help!
docs.google.com
Reproductive Demography Workshop
Workshop dates: Wednesday, November 11th - Friday, November 13th, 2026 The Colorado Fertility Project and CUPC are pleased to announce a workshop for graduate students and early-career researchers wh...
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Carolina Population Center @uncpopcenter.bsky.social · 04/09/2026
New study led by CPC Fellow Clark Gray shows that as ocean temperatures get warmer, child mortality and malnutrition increase. “I’m continuously surprised by how consistently negative the warming effect on health is,” Gray says. grist.org/food-and-agr...
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Philip N Cohen @philipncohen.com · 03/09/2026
184. People over age 65 now outnumber people under age 5 worldwide, for the first time ever (new Census Bureau report)
Trend lines graph
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Daniel J. Vecellio @sciencedjv.bsky.social · 31/08/2026
We recently published an update to our 2023 PNAS study looking at exposure to uncompensable heat stress in warmer worlds. By using age-stratified limits rather than a single one, exposure goes way up mainly in the elderly cohort. @thelancetplanet.bsky.social www.sciencedirect.com/science/arti...
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Climatologist49 @climatologist49.bsky.social · 01/09/2026
🚨🚨🚨 Summer 2026 (Jun-Aug) tied for the warmest summer on record according to PRISM climate data. The average temperature of 74.2F tied with 1936. 🔥🔥🔥
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IIASA @iiasa.ac.at · 01/09/2026
🎇 The IIASA Young Scientists Summer Program (YSSP) 2026 has come to a close! 52 young researchers from 15 countries participated this year. 🎉 We congratulate the 2026 cohort on their achievements and look forward to seeing how their research will impact the world. 👉 iiasa.ac.at/news/aug-202...
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Clark Gray @clarklgray.bsky.social · 31/08/2026
New pub in AJHB led by postdoc Alfredo Rojas!: Heat exposures increase anemia among adult women in LMICs :(
onlinelibrary.wiley.com
Climate Exposures Increase the Risk of Anemia Among Reproductive‐Age Women in Low‐ and Middle‐Income Countries
Climate change is having significant demographic and health impacts on human populations around the world. There is growing empirical evidence about the impacts of climate variability and change on p...
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Clark Gray @clarklgray.bsky.social · 31/08/2026
grist.org
When ocean temperatures increase, so does child malnutrition on land
Researchers have discovered this troubling consequence of climate change, but they still don't know why it happens.
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Clark Gray @clarklgray.bsky.social · 30/08/2026
Here are the same numbers for GEOG, summed across three categories. Small but hanging in there. 12,318 11,855 11,601 11,844 12,308 11,992
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Clark Gray @clarklgray.bsky.social · 28/08/2026
Nice story by Inside Climate News on our PNAS paper from last week:
insideclimatenews.org
As Oceans Warm, Children Face Growing Malnutrition Risk - Inside Climate News
In low- and middle-income countries, marine heat waves threaten children’s growth rates and lives, new research shows.
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Robert Rohde @rarohde.bsky.social · 27/08/2026
Landsat 9 captured very clear images of the Himalayan glacier that collapsed, triggering the catastrophic flash floods in Nepal. Estimating very roughly from these images, it appears that the area that failed may have spanned ~1 km² of ice and rock.
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Erich Fischer @erichfischer.bsky.social · 27/08/2026
Children disproportionately affected by heat Our new Science Advances paper, led by @rosapietroiusti.bsky.social and @wimthiery.eu, shows that children today – and in the future – are disproportionately affected by heat stress. www.science.org/doi/10.1126/...
science.org
Age-specific exposure to human-induced increases in humid heat
Children are particularly vulnerable to climate change impacts and will face intensifying effects of climate change during their lifetimes. Here, we show that children already face disproportionate ex...
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Zeke Hausfather @zekehausfather.com · 26/08/2026
I've added a new interactive warming map to my Climate Dashboard, powered by the Berkeley Earth high-res (~25 km resolution) dataset. Click anywhere on the planet to see how temperatures have changed since 1850, and download data for that location in csv form: dashboard.theclimatebrink.com#map
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Clark Gray @clarklgray.bsky.social · 25/08/2026
Interesting paper on urban tree cover and child mortality in LMICs that nicely parallels our marine heatwave paper in the same issue:
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Clark Gray @clarklgray.bsky.social · 23/08/2026
New paper in POEN led by graduate student Georgina Gemayel!: There is substantial concern about the health consequences of warming in North Africa and the Middle East, but we find minimal evidence that high temps contribute to obesity or anemia for adult women in Egypt and Jordan.
rdcu.be
Climate extremes and women’s nutritional status in Egypt and Jordan
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Clark Gray @clarklgray.bsky.social · 20/08/2026
"UNC-CH’s Education Policy Committee, in 2000, proposed aiming for a median GPA of 2.6 and penalizing departments whose medians rise above that. None of those moved forward, and little has changed. Except the median GPA: A UNC-CH spokesperson said it rose from 3.31 in 2010 to 3.58 in 2025."
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