Jonathan Overpeck @greatlakespecktwo.bsky.social Environmental/Climate scientist for 35+ years; NAS Member. Samuel A. Graham Dean, @UMSEAS @UMICH. Tweets my own. Thinking grad school? Join us at @UMSEAS.
Katie Mack @astrokatie.com Cosmologist, pilot, author, connoisseur of cosmic catastrophes. TEDFellow, CIFAR Azrieli Global Scholar. Domain verified through my personal astrokatie.com website. She/her. Dr.
Personal account; not speaking for employer or anyone else.
Climate.us @climate.us We are an independent, nonprofit successor to Climate(.)gov, safeguarding public access to trusted climate data, tools, and information.
Donate: https://www.climate.us/donate
Dr. Peter Neff @icy-pete.bsky.social Assistant Prof U Minnesota. Antarctic history from ice cores. Antarctic science. Views mine.
ESIIL @cu-esiil.bsky.social Growing a network to leverage the wealth of data for challenges in the environmental sciences.
esiil.org
James Hansen @drjamesehansen.bsky.social Director of Climate Science, Awareness and Solutions at Columbia University http://csas.earth.columbia.edu | Formerly Director of NASA GISS | jimehansen.substack.com
columbia.edu/~jeh1/
Prof Chris Jackson @seismatters.bsky.social Geoscientist | Occassionally on 📺 & 📻 talking about geoscience | I 🏃🏾♂️🚴🏾♂️ 🧗🏾♀️🎸🍺| he/him | 🏳️🌈🏳️⚧️| “Self-declared King of Geotwitter” (Palin, 2022) | Professional (East)Midlander 😎
Michael White @mwclimatesci.bsky.social Climate science editor for @nature.com, handling submissions on atmospheric science, oceanography, the cryosphere, and hydrology. Podcast archive at https://forecastpod.org/.
Mark Z. Jacobson @mzjacobson.bsky.social Climate, pollution, clean/renewable energy
Stanford U Prof, Civil & Env Eng; Director, Atmos/Energy Program
Cofounder-Solutions Project; Appeared on Letterman
Testified Held v Montana
https://web.stanford.edu/group/efmh/jacobson/
Stanford.io/Jacobson
Bill McKibben @billmckibben.bsky.social Founder 350.org and Third Act, author The Crucial Years on substack https://billmckibben.substack.com/
Author of 21 books, beginning with The End of Nature
Robert Rohde @rarohde.bsky.social Chief Scientist for @berkeleyearth.org.
Physics PhD & data nerd. Usually focused on climate change, fossil fuels, & air quality issues.
Scott St. George @scottstgeorge.paleohydrology.com Head of Weather & Climate Research at WTW, a global insurance advisory firm headquartered in London.
Alexander von Humboldt Fellow | Geological Survey of Canada alum | Formerly Associate Prof at University of Minnesota | Made in 🇨🇦 | Based in MSP
Jaclyn A. Siegel, PhD @jacasiegel.bsky.social Assistant Teaching Professor at Villanova University & Assistant Research Professor at UNC Charlotte’s Violence Prevention Center • Research Fellow @ the Kinsey Institute • Focused on gender, sexuality, and body image
WeRateDogs @weratedogs.com Your Only Source For Professional Dog Ratings
nonprofit: @15outof10.org ❤️🩹
links.weratedogs.com
EEID forum @eeidforum.bsky.social Connecting folks that are interested in host-parasite interactions
Celeste Labedz @celestelabedz.bsky.social environmental seismologist - doctor of glacier vibes - geoscience educator - she/her - opinions only my own - puns only my worst
Yale Center on Climate Change and Health @cchyale.bsky.social Utilizing Yale University's multidisciplinary expertise and global reach to address one of the greatest public health challenges of the 21st century. 🌎🌱
🏡 Housed at the Yale School of Public Health
Connect with us! 👉 linktr.ee/yccch
Jonathan Patz, MD, MPH @jonathanpatz.bsky.social Vilas Distinguished Professor
University of Wisconsin-Madison
Researching Climate Change & Health since 1990s: health co-chair for 1st US National Climate Assessment; lead author for UN IPCC; Elected Member of the National Academy of Medicine
Dr. Genevieve Guenther (she/they) @doctorvive.bsky.social
Founding Director, End Climate Silence
Author, *The Language of Climate Politics: Fossil-Fuel Propaganda and How to Fight It*
genevieveguenther.com
Flavio Lehner @climateflavors.bsky.social Climate Scientist
Assistant Professor @ Cornell University
Chief Climate Scientist @ Polar Bears International
https://flaviolehner.eas.cornell.edu/ 
Cristi Proistosescu @cristiproist.bsky.social Assistant Professor - School of Earth Sciences @ Illinois
cristi.pro
Kim R. van Daalen @daalenkim.bsky.social 🌱 Environmental epidemiologist
🫀 BHF CRE Career Development Fellow University of Cambridge
🍃 Former Fellow Lancet Countdown Europe & BSC Postdoc
🎓 Gates Cambridge alumna
🌐 Researching environment, health & (gender) equity
Rachel Lowe 🌺 @drrachellowe.bsky.social ICREA Research Professor | Global Health Resilience Group Leader at the Barcelona Supercomputing Center | Royal Society Dorothy Hodgkin Fellow at the London School of Hygiene & Tropical Medicine
Amy McGovern @profamymcgovern.bsky.social Professor in Meteorology and Computer Science, Director of the NSF AI Institute for Research on Trustworthy AI in Weather, Climate, and Coastal Oceanography (AI2ES), mom to @wrmf.bsky.social and @agileschnauzers.bsky.social
Capital Weather @capitalweather.com D.C.'s Trusted Weather Team
http://www.capitalweather.com | info@capitalweather.com
Adam Sobel @adamsobel.bsky.social Atmospheric scientist
The Onion @theonion.com America’s Finest News Source. A @globaltetrahedron.bsky.social subsidiary.
Get the paper delivered to your door: membership.theonion.com
Join The Onion Newsletter: https://theonion.com/newsletters/
Glen Peters @glenpeters.bsky.social Energy, emissions, & climate
CICERO Center for International Climate Research, Oslo, Norway
https://cicero.oslo.no/en/employees/glen-peters
Jacquelyn Gill @jacquelyngill.bsky.social Climate, extinction, and biodiversity scientist at the University of Maine researching Earth’s past for a better future. Writing and podcasting for the planet. Chaotic good professor. She/her.
Gretchen Goldman, PhD @gretchentg.bsky.social President @ucs.org. Previously: USDOT, White House OSTP, @500womensci.bsky.social. Environmental engineer. Mom. Cyclist. Public Transit Enthusiast. Views my own. She/her.
Kim Cobb @kimcobb.bsky.social 40% Climate Scientist, 40% Mom, and 20% Indiana Jones. Unapologetically obsessed with carbon. Lawrence & Barbara Margolis Director, http://ibes.brown.edu. She/her. Views my own
IPCC @ipcc.bsky.social Intergovernmental Panel on Climate Change
Project Drawdown @projectdrawdown.bsky.social 🌍 The world’s leading guide to science-based climate solutions.
Visit www.drawdown.org to learn more
Dr. Jonathan Foley @globalecoguy.bsky.social - Executive Director, Project Drawdown drawdown.org
- Climate scientist, working on solutions
- Passionate about science, communication, and hope
- Minnesota based, Maine born
- Personal account / My views
Prof Friederike Otto @frediotto.bsky.social 🇬🇧 🇪🇺 physicist, philosopher, lead https://www.worldweatherattribution.org/, author of Climate InJustice https://greystonebooks.com/collections/current-affairs-politics/products/climate-injustice, she/her
American Meteorological Society @ametsoc.org AMS is a professional organization that advances the atmospheric and related oceanic and hydrologic sciences in service to society.
https://www.ametsoc.org/
Kelton Minor @keltonminor.bsky.social Researching human adaptation to global changes in climate, environment, and technology
TC (Tirthankar Chakraborty) @tchakraborty.bsky.social Earth Scientist @ Pacific Northwest National Lab; previously Yale (PhD '21); more previously IIT Kanpur (M.Tech '15)
| urban climate | aerosols | remote sensing | heat stress | Google Earth Engine | geospatial | machine learning |
https://tc25.github.io/
Ufuoma (oo-fwo-ma) @doctorufu.bsky.social Incoming Asst. Prof UArizona Geography | Environmental Justice & Carceral Geographies | Founder of Toxic Prisons Mapping Project toxicprisons.com | itsufuoma.com
World Weather Attribution @wwattribution.bsky.social Rapid attribution to uncover the influence of climate change on heatwaves, drought, wildfire, storms and floods. 
Benjamin Cook @dustybowl.bsky.social Climate scientist studying drought, land surface processes, climate extremes. https://www.drbenjamincook.net/
BoulderCAST Weather 🏔️⛈️ @bouldercast.com We're BoulderCAST, a team of local meteorologists that forecast Boulder and Denver weather as well as nearby mountain conditions. Proudly providing timely, accurate weather intelligence to the community and our clients since 2014 🏔️❄️🌩️
Dan Visioni @danvisioni.bsky.social Climate scientist studying aerosols, chemistry, radiation, climate & society from Volcanoes 🌋and Climate Intervention. Assistant Professor at Cornell EAS, from 🇮🇹proudly🏳️🌈 More at https://dan-visioni.github.io/ and https://www.wcrp-climate.org/ci-overview
Abigail Swann, PhD @ecoclimatelab.bsky.social I study how climate works differently because of plants. Professor at @Univ. of Washington, views are my own. She/her
IDDjobs @iddjobs.org A site for positions in infectious disease dynamics (broadly defined).
This is an autoposter for jobs at IDDjobs.org. Occasionally a human is here.
Eos @eos.org Eos is a leading source for trustworthy news and perspectives about the Earth and space sciences and their impact. Published by the American Geophysical Union (@agu.org).
AGU (American Geophysical Union) @agu.org Official AGU: supporting 500k+ Earth & space science advocates.
🌏 🚀 🔬
Save the Date for #AGU26 in San Francisco, CA, 7-11 December, 2026.
American Association of Geographers @geographers.bsky.social AAG brings together members of the global geographic community. We are an academic & professional organization representing educators, researchers, & practitioners in geography. https://www.aag.org/membership/
Nature Climate Change @natclimate.nature.com A monthly journal dedicated to publishing cutting-edge research on the nature, underlying causes or impacts of global climate change and its implications for the economy, policy and the world at large https://www.nature.com/nclimate
Jenny Bratburd @jbratburd.bsky.social Outreach program manager for NASA HAQAST | Climate change & health researcher | Microbiology PhD, UW Madison | Opinions are my own.
Chris Stone @cstone.bsky.social Medical entomologist at the Illinois Natural History Survey, University of Illinois Urbana-Champaign
Justin S. Mankin @jsmankin.bsky.social climate scientist || documenting and predicting climate impacts || professor @dartmouth
https://geography.dartmouth.edu/people/justin-s-mankin
https://jsmankin.github.io/ 
Christopher Callahan @ccallahan45.bsky.social climate scientist: extreme heat, health, attribution, climate in the courts. heat wave is two words. iuclimateandsociety.com
AGU GeoHealth Journal @geohealthjournal.bsky.social A transdisciplinary, open access journal publishing across the intersections of Earth, environmental and health sciences. https://agupubs.onlinelibrary.wiley.com/journal/24711403
Andrea Baccarelli @deanbaccarelli.bsky.social Dean of the Faculty at Harvard T.H. Chan School of Public Health. Epidemiologist by training. Originally from Umbria, Italy. Passionate about sunrises, great food, and soccer. hsph.harvard.edu 
Lucas Henneman @lucas-henneman.bsky.social Health and Air Quality Lab @GeorgeMasonU
Dr. Robert D. Bullard @drrobertbullard.bsky.social Director of Bullard Center Texas Southern University, professor, author of 18 books, NBEJN #HBCU Climate Change Consortium, #ClimateReality Board, AAAS, National Academy of Medicine, TIME Earth Award, Father of Environmental Justice, US Marine Corps Vet.
Union of Concerned Scientists @ucs.org The Union of Concerned Scientists puts rigorous, independent science to work to solve our planet's most pressing problems.
ucs.org
Dhruba Samanta @dhrubasamanta.bsky.social Climate Scientist @Earth Observatory of Singapore, Nanyang Technological University | Member, WCRP Global South Inclusion Task Team, CLIVAR Pacific Region Panel | Associate Editor, Geophysical Research Letters
https://dhruba-samanta.github.io/
Bob Kopp @bobkopp.net #Climate & sea level science + policy. Rutgers University. All views my own. www.bobkopp.net- K Kristie Ebi @krisebi.bsky.social Climate scientist focusing on health risks, adaptation, mitigation, co-benefits, scenarios
Jon Levy @jonlevybu.bsky.social Professor and Chair of Dept of Environmental Health at BU School of Public Health. Focus on indoor and outdoor air, climate change, housing, and environmental justice. Occasional parental musings and the odd dad joke. Once called “Very human, relatable”.
Robbie M. Parks @robbieparks.bsky.social Assistant professor at Columbia University
Dan Goldberg, PhD @dgoldbergaq.bsky.social George Washington University Assistant Research Professor. Posting about air quality, remote sensing, climate change, and health
Deepti Singh @climatechirper.bsky.social scientist studying weather and climate extremes, climate variability, climate and health, pitbull advocate (She/Her)
https://labs.wsu.edu/climate/
Rachel E. Baker @rebaker.bsky.social Assistant Professor of Environment and Society, and Epidemiology @BrownUniversity
rachelelizabethbaker.com
Sadie J. Ryan (she/her) @sjryan3.bsky.social 🌍🔮🌡️☣️🦟🏳️🌈 Prof. Medical Geography, Co-Director, FL Climate Institute, Assoc Dir, APPEX, building tools to anticipate climate-health impacts to prepare us for the future! Mum and wife, enjoyer of cheese. Rarely serious. She/her. Queer. All opinions are my own.
The Medical Society Consortium on Climate and Health @docsforclimate.bsky.social We mobilize the health voice for equitable climate solutions.
Housed at the George Mason University Center for Climate Change Communication.
CAFE RCC Health & Extreme Weather @climatehealthcafe.bsky.social The Research Coordinating Center for Health and Extreme Weather, based at the Boston University School of Public Health and Harvard T.H. Chan School of Public Health. Shares ≠ endorsements; the goal is to amplify opportunities for the CAFE community.
The Lancet Countdown on Health and Climate Change @lancetcountdown.bsky.social Bringing together experts from across the globe to track how climate change is affecting our health, and how the world is responding.
Funded by Wellcome.
Marta Shocket @martashocket.bsky.social Lecturer @ Lancaster University LEC | ecology & evolution of infectious disease, vector-borne disease, climate (change), stats/models, insects, Daphnia | they/them
Kai Chen @kaichenyale.bsky.social Associate Professor @YaleSPH @YaleDeptEHS. #Humboldtian Working on #ClimateChange, #AirPollution, and public health.
Kate Marvel @drkatemarvel.bsky.social Climate scientist, formerly NASA, currently Project Drawdown. Former astrophysicist, current Earth supremacist. Author of HUMAN NATURE, best book of 2025 according to both Scientific American and my dad https://shorturl.at/aJRYb
Aaron Clauset @aaronclauset.bsky.social NO KINGS. NO FASCISTS. FUND SCIENCE.
Professor of Computer Science @ BioFrontiers Institute at University of Colorado, Boulder and External Faculty @ Santa Fe Institute
orcid: https://orcid.org/0000-0002-3529-8746
Dan Larremore @danlarremore.bsky.social Prof | CU Boulder BioFrontiers Institute + Computer Science | Santa Fe Institute | LarremoreLab.github.io
Founder | CevianLabs.io
Elle Cordova @ellecordova.bsky.social A nerd at large. Writer of stuff.
Join my sci-fi book club:
http://patreon.com/ellecordova
nerd humor • space & sci fi • books
The Global Climate And Health Alliance @gchalliance.bsky.social Global coalition of #health organisations tackling #climatechange to protect and promote public health. We mobilise the global health community and accelerates climate action to improve health for all. #ClimateAction is #Health action.
Randall Munroe @xkcd.com 
Sam Lillo @samlillo.bsky.social Mostly weather, dataviz, and some homesteading projects
Dena Coffman @denacoffman.bsky.social climate adaptation & GIS at UMN Climate Adaptation Partnership 🌎 👩🏻💻
📍 Minneapolis
she/her 🚴♀️🧶🏃♀️
christy marsden @christym.bsky.social she/her. minneapolis. plants, bikes, textile crafts, urbanism, and climate with an adaptation bend
Brigitta Rongstad Strong @brongstad.bsky.social Communications specialist and science writer @cires.colorado.edu | PhD-trained geologist | personal assistant to 3x🐕 | she/her
Gabriel Filippelli @gabefilippelli.bsky.social Environmental Scientist
Ploy Achakulwisut, PhD @ploya.bsky.social Former science & mitigation lead in the UN Secretary-General's Climate Action Team | Former #ProductionGap report co-lead | 1.5°C • Fossil fuel phase-out • Just Energy Transition | Science • Advocacy • Policy • Diplomacy | #Grist50 | She/her | Views mine
Colin Carlson @colincarlson.bsky.social Climate change, global health security, science diplomacy, and good bad futures • Yale • carlsonlab.bio • viralemergence.org • he/they
Prof. Stefan Rahmstorf @rahmstorf.bsky.social Climate scientist, professor of Physics of the Oceans in Potsdam. Dad. Opinions my own.
Born at 317 ppm CO2.
Carl T. Bergstrom @carlbergstrom.com Professor, UW Biology / Santa Fe Institute
I study how information flows in biology, science, and society.
Book: *Calling Bullshit*, http://tinyurl.com/fdcuvd7b
LLM course: https://thebullshitmachines.com
Corvids: https://tinyurl.com/mr2n5ymk
he/him
Andrew Dessler @andrewdessler.com Prof of Atmospheric Sciences & climate scientist @ Texas A&M; AGU and AAAS Fellow; Native Texan; find out what I think at https://www.theclimatebrink.com/
Tomer Burg @burgwx.bsky.social Senior meteorological scientist at @windbornewx.bsky.social & web developer
Bob Henson @bhensonweather.bsky.social Meteorologist and journalist. I cover wacky weather, changing climate, and how we live, love, work, get around, and dream. 
Ed Maibach @maibached.bsky.social I'm a health professional who’s all in on using the science of science communication to fight climate change. My message: The end of fossil fuels will be a new beginning for health. #Resist
Zeke Hausfather @zekehausfather.com "A tireless chronicler and commentator on all things climate" -NYTimes.
Climate research lead @stripe, writer @CarbonBrief, scientist @BerkeleyEarth, IPCC AR7 lead author.
Website: https://zekehausfather.com/
Substack: https://www.theclimatebrink.com/
Michael E. Mann @michaelemann.bsky.social Scientist/Author/Speaker; Presidential Distinguished Prof/Director Center for Science, Sustainability & the Media, U. Penn; National Academy of Sciences; American Academy of Arts & Sciences; Royal Society; Tyler Prize
Daniel Swain @weatherwest.bsky.social Weather and climate scientist focused on extreme events like floods, droughts, & wildfires on a warming planet. www.weatherwest.com
Peter Gleick @petergleick.bsky.social Climate, water, birds, bluegrass mandolin. Member US National Academy of Sciences, MacArthur Fellow, Carl Sagan Prize, author of The Three Ages of Water (2023) and When the Well Runs Dry (2026). Email me at pgleick (at) gmail.
Eric Holthaus @ericholthaus.com Meteorologist for REBUILD.US based in Minneapolis. Contributing climate journalist for The Guardian. Author of The Future Earth. Optimistic to a fault.
DM to contact me securely on Signal
Gavin Schmidt @climateofgavin.bsky.social Climate scientist, juggler. Bikes etc. Blogging at https://www.realclimate.org - data visualization, explainers, and debunking.
Katharine Hayhoe @katharinehayhoe.com climate scientist
posts 100% my own
🇨🇦 is my home
distinguished professor & chair, Texas Tech
chief scientist, The Nature Conservancy
board member, Smithsonian NMNH
advisor, Lawson Climate Inst UofT
alumna, UToronto and UIUC
author, Saving Us
Leah Stokes @leahstokes.bsky.social Professor of climate + energy policy at UCSB. Alumni of MIT, Columbia and UToronto. Hosts "A Matter of Degrees" podcast. Cuts carbon pollution! Proudly 🇨🇦 Gardener 🌱 leahstokes.com; Newsletter: electricnotes.news
Ed Hawkins @edhawkins.org Climate scientist at the National Centre for Atmospheric Science, University of Reading | IPCC AR6 Lead Author | MBE | Views own | https://edhawkins.org
Warming Stripes: http://www.ShowYourStripes.info