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Kai Chen

@kaichenyale.bsky.social
1.8K followers 610 following 58 posts

Associate Professor @YaleSPH @YaleDeptEHS. #Humboldtian Working on #ClimateChange, #AirPollution, and public health.

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Reposted by Kai Chen
Colin Carlson @colincarlson.bsky.social · 17/09/2025
🚨 NEW: Climate change is already causing 30,000 deaths per year - a global annual economic loss of $100-350B USD - but the true damage is probably 10x higher. Out TODAY in Nature Climate Change: the first systematic look at the science of "health impact attribution" 🔓 www.nature.com/articles/s41...
"Health losses attributed to anthropogenic climate change," a brief communication in the journal Nature Climate Change. There's a map showing regions of the world, and pie charts of relevant studies as they apply to different health impacts like "heat-related deaths" and "maternal and child health"
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Gregg Gonsalves @gregggonsalves.bsky.social · 28/08/2025
#NIH is hanging by a thread. The #CDC has been decimated. #RFK Jr. and Russell #Vought are psychopaths--I don't say this frivolously--they are cold, calculating, inflicting violence on millions through public policy. It is where we are right now. These men are not normal. 1/
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Colin Carlson @colincarlson.bsky.social · 15/08/2025
Something I wish more people understood: part of the point of shock-and-awe grant terminations at NIH and NSF has been to make scientists and university administrators afraid to speak out against the administration. And it's working. But, some of us were never going to get a grant from them anyway.
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Climate Central @climatecentral.org · 07/08/2025
🔴 #THISISCLIMATECHANGE 🔥 Wildfires in Canada—sending smoke into the Northeast U.S.—were fueled by extreme heat, 20°F+ above average for early August. 🌡️ Meanwhile, 53M people in the U.S. Southwest & Mexico are facing extreme heat that’s nearly impossible without climate change. 🧵/6
Two side-by-side maps of Canada highlighting the influence of climate change on early August 2025 heat. The left map shows temperature departures from normal, with widespread areas in central and eastern Canada 12–14°C above average (shaded in dark red). The right map shows Climate Shift Index (CSI) values, indicating that the extreme heat in these regions is strongly linked to climate change (CSI values of 3 to 5 shown in red). Data from ECMWF ERA5 and NOAA GFS.

Map highlighting the Southwestern U.S. and northern Mexico with Climate Shift Index (CSI) values for August 4–8, 2025. Deep red areas over Arizona, New Mexico, Texas, and northern Mexico indicate CSI values of 5—the highest level—showing extreme heat that is almost entirely attributable to climate change. Lighter shades extend across surrounding regions. Source: Climate Central; analysis based on ECMWF ERA5 and NOAA GFS data.
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Lauren Rosenthal @laurenthal.bsky.social · 05/08/2025
Scoop: The U.S. billion-dollar disaster database is set to return this fall over at @climatecentral.org. They've hired the former NOAA scientist who ran the project for 10+ years www.bloomberg.com/news/article...
bloomberg.com
Researchers Are Resurrecting Billion-Dollar Disaster Tool Trump Killed
Nonprofit Climate Central has hired the scientist behind a key database of costly weather disasters to rebuild it.
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Kai Chen @kaichenyale.bsky.social · 05/08/2025
Wildfire smoke in New England, please stay safe!
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Reposted by Kai Chen
Alicia Izquierdo @aliciaizquierdo.bsky.social · 01/08/2025
Suspension of all grants to UCLA www.latimes.com/california/s...
latimes.com
Trump freezes $200 million in UCLA science and medical research funding, citing antisemitism
The Trump administration has frozen roughly $200 million in National Science Foundation, National Institutes of Health and other federal agency-funded research at UCLA, citing allegations the school d...
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Dan Garisto @dangaristo.bsky.social · 01/08/2025
The Trump administration is launching a new wave of attacks on universities, and UCLA is the latest target. My reporting on how the university has been hit and how some of its scientists are responding: www.science.org/content/arti...
science.org
NSF and NIH suspend grants to UCLA
Move follows Trump administration finding that school didn’t effectively combat antisemitism
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Kai Chen @kaichenyale.bsky.social · 31/07/2025
Wildfire smoke and unhealthy air fills the Midwest before spreading to the East wapo.st/45f1ddo
wapo.st
Wildfire smoke and unhealthy air fills the Midwest before spreading to the East
As has been the case much of the summer, the smoke invasion is targeting the Upper Midwest to Great Lakes. Beyond Thursday, smoke may impact more of the Northeast U.S. through and beyond Friday.
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Kai Chen @kaichenyale.bsky.social · 30/07/2025
In Game-Changing Climate Rollback, E.P.A. Aims to Kill a Bedrock Scientific Finding www.nytimes.com/2025/07/29/c...
nytimes.com
In Game-Changing Climate Rollback, E.P.A. Aims to Kill a Bedrock Scientific Finding
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Colin Carlson @colincarlson.bsky.social · 29/07/2025
One thing very few people know, even in the climate-health research space, is that - in addition to NIH / NSF / NASA / EPA blocking any new research on climate change and health - all the philanthropies have decided to take NGO-shaped roles rather than fund research, and so they aren't stepping in.
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lingzhichu.bsky.social @lingzhichu.bsky.social · 24/07/2025
🎆NEW RESEARCH OUT In our new study published in One Earth, we uncovered hard truths about NO2-related health disparities in the U.S. Racial-ethnic minorities were generally more exposed and susceptible. The most affected race-ethnicity group was location-specific.
cell.com
Disparities in NO2-related health burden prevalent across race-ethnicity and income groups in the United States
Increasing evidence has linked long-term NO2 exposures to adverse health, while current research on the NO2-related health burden rarely assesses exposure and susceptibility disparities jointly. In th...
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Kai Chen @kaichenyale.bsky.social · 23/07/2025
In ‘blow to the environment,’ EPA begins to dismantle its research office | Science | AAAS www.science.org/content/arti...
science.org
In ‘blow to the environment,’ EPA begins to dismantle its research office
Extensive layoffs could have wide-ranging impacts on conservation and human health
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Kai Chen @kaichenyale.bsky.social · 21/07/2025
🚨 NEW STUDY: Despite falling CA air pollution 1980-2022, relative racial disparities in short-term NO₂ exposure worsened. ➡️ Hispanic/Latino communities faced 3X MORE high-pollution days (>50µg/m³) than White residents in 2020. Paper: doi.org/10.1016/j.jhazmat.2024.134211
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Pam McElwee @pammcelwee.bsky.social · 19/07/2025
Well tonight’s Friday government news dump is horribly depressing- EPA to eliminate their entire research branch (ORD). I’ve been on ORD’s science advisory board the last few years and they do amazing work across climate, air, water and other issue. This sucks www.nytimes.com/2025/07/18/c...
nytimes.com
E.P.A. Says It Will Eliminate Its Scientific Research Arm
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Yale School of Public Health @yalesph.bsky.social · 15/07/2025
Beyond just physical damage and lives lost, floodwaters can cause increased health risks including: ➡️ Diarrhea ➡️ Mold ➡️ Chronic conditions ➡️ Stress and mental health disorders ➡️ Disruption to health care services Read more ⬇️ abcnews.go.com/Health/texas...
abcnews.go.com
Texas floodwaters can increase health risks that could last for months: Experts
Floodwaters be contaminated with debris as well as high levels of bacteria, chemicals, waste and other pollutants, which can cause prolonged health risks, experts say.
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Kai Chen @kaichenyale.bsky.social · 15/07/2025
www.nytimes.com/2025/07/14/w...
nytimes.com
Storms Pummel New York City and Suburbs, Flooding Subway and Highways
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Reposted by Kai Chen
Dr. Robert D. Bullard @drrobertbullard.bsky.social · 07/07/2025
NYTimes: Texas Flood Live Updates: Death Toll Tops 100, Including 27 at a Girls’ Camp www.nytimes.com/live/2025/07...
nytimes.com
Texas Flood Live Updates: Death Toll Tops 100, Including 27 at a Girls’ Camp
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Kai Chen @kaichenyale.bsky.social · 06/07/2025
Devastating to see over 50 lives lost in Texas floods💔This tragedy reflects a broader pattern our Nature Communications study uncovered:~100 Texans died yearly from flooding—not just from drowning, but injuries, heart, and lung diseases. @lingzhichu.bsky.social 📊 www.nature.com/articles/s41...
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Kai Chen @kaichenyale.bsky.social · 03/07/2025
Methane-Tracking Satellite Is Lost, in a Blow to Climate Efforts www.nytimes.com/2025/07/02/c...
nytimes.com
Methane-Tracking Satellite Is Lost, in a Blow to Climate Efforts
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Reposted by Kai Chen
Megan Ranney MD MPH @meganranney.bsky.social · 03/07/2025
As US population level health data becomes ever-more unreliable … we are proud to unveil a new resource for families, policy makers, and healthcare providers @yalesph.bsky.social
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Kai Chen @kaichenyale.bsky.social · 21/06/2025
Intense Heat Wave Will Leave the Midwest Sweltering This Weekend www.nytimes.com/2025/06/19/w...
nytimes.com
Intense Heat Wave Will Leave the Midwest Sweltering This Weekend
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Reposted by Kai Chen
Gregg Gonsalves @gregggonsalves.bsky.social · 16/06/2025
Judge Young was appointed by President Ronald Reagan in 1984. Here he excoriates the Trump Administration's termination of grants at NIH. This is just the start of a process. But it is ground-breaking and good news for today.
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Megan Ranney MD MPH @meganranney.bsky.social · 15/06/2025
Over the next 25 years, if proposed cuts in NIH funding are made real, “In a population of more than 340 million, this reflects **82 million** fewer years of life.” In the US alone. jamanetwork.com/journals/jam...
jamanetwork.com
Cutting the NIH—The $8 Trillion Health Care Catastrophe
This JAMA Forum discusses the recent budget cuts to National Institutes of Health (NIH), the effects of these cuts on scientific research and health of individuals in the US, and the prospects for cha...
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Bill McKibben @billmckibben.bsky.social · 11/06/2025
Today's the day when the US government officially throws in the towel on the climate fight. Which means the rest of us have to pick up the slack www.politico.com/news/2025/06...
politico.com
EPA to propose rolling back climate rule for power plants Wednesday
It marks an escalation in President Donald Trump's effort to purge climate initiatives from the federal government.
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Kai Chen @kaichenyale.bsky.social · 04/06/2025
The National Weather Service issued air quality alerts for New York City for Wednesday and many of the surrounding suburbs, including those in New Jersey and most of southern Connecticut. www.nytimes.com/2025/06/03/w...
nytimes.com
Smoke From Canadian Wildfires Approaches the Northeast
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Ed Maibach @maibached.bsky.social · 02/06/2025
I laughed. I cried, and cried some more. But then I called my members of Congress, Governor, state representatives, and County Executive to demand more climate action. I urge everyone to do the same. @mason4c.bsky.social @docsforclimate.bsky.social www.linkedin.com/posts/climat...
linkedin.com
David Cross Meets Prof Michael Oppenheimer in Climate Science Translated… | Climate Science Breakthrough | 11 comments
Just dropped into the scorching-hot US climate culture wars: our latest "Climate Science Translated" film, starring David Cross and Prof Michael Oppenheimer! Our first batch of films did p...
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Joe Allen @joeallenjoe.bsky.social · 03/06/2025
www.thetimes.com/us/american-...
thetimes.com
We are Harvard researchers. Trump’s cuts are endangering lives
The president’s funding cuts at the university will harm cancer patients, ALS sufferers and 800 babies and toddlers, academics warn
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Reposted by Kai Chen
Jon Levy @jonlevybu.bsky.social · 24/05/2025
Since Lincoln was President, the National Academies has provided unbiased expert guidance to the government. I’ve had the privilege of serving on multiple committees, and the excellent staff takes their responsibility to help the country very seriously. What are we doing here?
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Max Kozlov @maxkozlov.bsky.social · 21/05/2025
Who's calling the shots at NIH? Sworn testimonies and internal e-mails reveal for the first time the breadth of DOGE's control over the world's largest public biomedical funder. DOGE has provided lists of hundreds of grants to cut, and DOGE is now reviewing ALL NIH awards before they're released
nature.com
NIH killed grants on orders from Elon Musk’s DOGE
Court documents and internal correspondence show the cost-cutting force has broad control over the world’s largest public biomedical funder.
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Jon Levy @jonlevybu.bsky.social · 16/05/2025
It’s hard to get public sympathy for Harvard losing money. But this assault is killing jobs and destroying careers, with incalculable losses of knowledge about science and health. And if this stands, any school, non-profit, or business could be at risk just for making the administration mad.
Dear Harvard Chan faculty, academic appointees, and staff:

Within the last several days, the university has received letters from most federal agencies indicating that nearly all of Harvard Chan’s active, direct federal grants have been terminated.
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Scott Delaney @scott-delaney.bsky.social · 15/05/2025
All NIH and NSF grants for my entire team--and for all of Harvard, I guess?--have been terminated. As provocative as that sounds, the practical effect is probably not much. Everything was already frozen. 🤷‍♂️ On the upside, it makes tracking terminated grants easier. No more guesswork at Harvard!
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Katharine Hayhoe @katharinehayhoe.com · 08/05/2025
In the 1980s, the US experienced one billion-plus dollar extreme weather disaster on average every 4 months. Today? There’s one every 2 weeks, and 9 in 10 Americans say they’ve felt the impacts. Clearly, this is the record to cut—if you don’t want to show how climate change is hitting home.
ncei.noaa.gov
Billion-Dollar Weather and Climate Disasters | National Centers for Environmental Information (NCEI)
Summary of U.S. billion-dollar weather and climate related disaster research, methodology, and data sources
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Kai Chen @kaichenyale.bsky.social · 05/05/2025
Inspiring Health Effects Institute 2025 Annual Meeting with books signed, legends introducing the past and future of air pollution epidemiological research! Science moves forward, despite the political wind turbines. #EpiSky
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Kai Chen @kaichenyale.bsky.social · 02/05/2025
AGU and AMS are inviting manuscripts for this new, first-of-its-kind, special collection focused on climate change in the United States. This catalog of over 29 peer-reviewed journals covers all aspects of climate, including observations, projections, impacts, risks, and solutions. #climatechange
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Kai Chen @kaichenyale.bsky.social · 01/05/2025
Post-flood hospitalization risks persist for months, with variations by climate type, flood severity, age, population density, and SES. Check out our News&View article on "Prolonged health risks following floods" @naturewaterjnl.bsky.social @cchyale.bsky.social @yalesph.bsky.social rdcu.be/ekewT
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Emily Copeland @emilyscn.bsky.social · 30/04/2025
AGU GeoHealth, Current Environmental Health Reports, Journal of Exposure Science and Environmental Epidemiology, (assuming others are too, feel free to add) stepping in to help with the big loss of #EHP 🧪 www.linkedin.com/feed/update/... www.linkedin.com/feed/update/...
linkedin.com
Current Environmental Health Reports (CEHR) stands with the environmental… | Dave Love
Current Environmental Health Reports (CEHR) stands with the environmental health community amid cuts to U.S. federal health agencies during this uncertain time. If your review article was recently wi...
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Kai Chen @kaichenyale.bsky.social · 30/04/2025
Citing N.I.H. Cuts, a Top Science Journal Stops Accepting Submissions With federal support, Environmental Health Perspectives has long published peer-reviewed studies without fees to readers or scientists. Thanks to @jonlevybu.bsky.social highlighting the huge loss www.nytimes.com/2025/04/29/s...
nytimes.com
Citing N.I.H. Cuts, a Top Science Journal Stops Accepting Submissions (Gift Article)
With federal support, Environmental Health Perspectives has long published peer-reviewed studies without fees to readers or scientists.
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AGU (American Geophysical Union) @agu.org · 29/04/2025
AGU has filed a new lawsuit to prevent the Administration’s dismantling of U.S. scientific agencies. We’re proud to take this stand with our plaintiffs’ coalition for our federal workforce. buff.ly/3U56ooz
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Jesse Berman @jesseberman.bsky.social · 29/04/2025
I too was a proud contributing author on the National Climate Assessments (#NCA6) Northern Great Plains chapter, where we emphasized topics pertinent to the people, ecosystems, and economy of this area. It is a true loss to the people of this region, who face unique climate related challenges
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AGU GeoHealth Journal @geohealthjournal.bsky.social · 25/04/2025
1/2 - While we feel deeply sorry for the pause of EHP publications, we the AGU GeoHealth journal would like to help! If you have a manuscript that was recently withdrawn from EHP, the AGU GeoHealth journal would be happy to consider your manuscript. If your manuscript has been peer-reviewed...
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Kai Chen @kaichenyale.bsky.social · 25/04/2025
If you recently had a manuscript withdrawn from EHP, the AGU GeoHealth journal would be happy to consider your work. For manuscripts that have already undergone peer review and are in the revision stage, we can fast-track the review process. #EpiSky @isee-global.bsky.social
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Kai Chen @kaichenyale.bsky.social · 25/04/2025
In this historical moment of anti-science, the story and journey of this year’s Winslow Medal awardee @peterhotezmdphd.bsky.social inspires us @yalesph.bsky.social on how to keep the important public health work ongoing despite challenges ahead! Thank you, Dr Hotez! @meganranney.bsky.social
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Kai Chen @kaichenyale.bsky.social · 24/04/2025
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Kai Chen @kaichenyale.bsky.social · 24/04/2025
So sad to see this happening: the leading environmental health journal EHP stops handling manuscripts. Some friends with manuscripts in revision (months to even a year in the peer review process) got their manuscripts withdrawn. Hope this is just a pause but not the end.
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Justin S. Mankin @jsmankin.bsky.social · 23/04/2025
Can scientists trace climate losses back to the emissions from individual fossil fuel companies? Yes, we can. The inimitable @ccallahan45.bsky.social and I provide an 'end-to-end' attribution framework that can be applied in many climate accountability contexts: www.nature.com/articles/s41...
nature.com
Carbon majors and the scientific case for climate liability - Nature
A transparent and reproducible scientific framework is introduced to formalize how trillions in economic losses are attributable to the extreme heat caused by emissions from fossil fuel companies, whi...
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Kai Chen @kaichenyale.bsky.social · 22/04/2025
Amazing sessions at the National Academy of Medicine Climate Health Summit. A great way to celebrate the 55th Earth Day!
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Jon Levy @jonlevybu.bsky.social · 22/04/2025
One way to “celebrate” Earth Day - cuts to this small research portfolio apparently even include a highly successful industry/government co-funding model. www.science.org/content/arti...
science.org
EPA orders staff to begin canceling research grants
Agency targets programs that award up to $40 million annually
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Scott Delaney @scott-delaney.bsky.social · 21/04/2025
🧪 Our Terminated NSF Grant Tracker is live 🧪 🔴 114 NSF grants listed so far 🔴 Cancelled grants focused on → Training scientists → Misinformation → AI → Climate change Credit to @noamross.net for all the work to build this & to all PIs who submitted their info. Link: airtable.com/appGKlSVeXni...
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AGU GeoHealth Section @agugeohealth.bsky.social · 18/04/2025
Please join us for a Panel Discussion -- Sustaining Climate & Health Research: A Conversation with Funders, featuring panelists from NSF, Wellcome Trust, The Rockefeller Foundation, and UCSF.
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