Semafor @semafor.com Building a new global news company. Sign up for our newsletters: https://www.semafor.com/newsletters
Nat Bullard @nathanielbullard.com Energy systems and information platforms.
I do that presentation.
https://www.nathanielbullard.com/
📍Singapore
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
Dr. Dawn Wright @deepseadawn.bsky.social Seafloor mapper, Chief Scientist of smart mapping company Esri, Oregon State U. GIS/oceans professor, EC50, cyclist, 1st Black submersible diver to Challenger Deep, builds w/LEGO, raised in Hawaii. NAS, NAE, ORCID 0000-0002-2997-7611; She/her; views mine
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
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/
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
Adam Sobel @adamsobel.bsky.social Atmospheric scientist
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.
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.
Ayana Elizabeth Johnson @ayanaeliza.bsky.social Marine biologist, writer, policy nerd. Co-founder Urban Ocean Lab, think tank for the future of coastal cities. In love with climate solutions.
Benjamin Cook @dustybowl.bsky.social Climate scientist studying drought, land surface processes, climate extremes. https://www.drbenjamincook.net/
Prof Lisa Schipper 🌍🍉💪 @lisaschipper.bsky.social Climate adaptation & development•Prof Development Geography @giubresearch.bsky.social•Co-EiC @climdevjournal.bsky.social•PI @dependencybonn.de•Associate @sei.org & @ecioxford.bsky.social• @welthungerhilfe.bsky.social•she/her/Du•Servant to 2 rescue 🐈⬛ •🇸🇪
Mike MacFerrin @icesheetmike.myatproto.social Dr in glaciology and expert mapper of coastal topography at a Cooperative Research Institute. An organizer for disability rights in science, which mostly involves yelling at agencies. Science is the easier part of my work. #T1D
Mike Dettinger @mdettinger.bsky.social Water/environ/climate news & occasional bespoke data maps/calcs, from CarsonCity (Wá∙šiw land), NV. Retired USGS & now p/t @CW3EScripps scientist.
Bona fides? PhD.UCLA F.AGU F.AAAS M.NAE; www.mdettinger.com
Ruth Mottram @ruthmottram.eurosky.social Climate scientist at DMI, Greenland, Antarctica, polar regions in general.
Now migrated to eurosky.social on here.
Mostly on mastodon though @ruth_mottram@fediscience.org
Blogging at sternaparadisaea.net
Daniel Swain @weatherwest.bsky.social Weather and climate scientist focused on extreme events like floods, droughts, & wildfires on a warming planet. www.weatherwest.com
Dr. Merritt Rae Turetsky @queenofpeat.bsky.social Pre-order Bogland at https://wwnorton.com/books/bogland
Author, scientist, mom. Bog adventurer. Permafrost detective. Learn more at merrittraeturetsky.com
Mauri Pelto @mauri-pelto.bsky.social Glaciologist who has spent 40+ years doing fieldwork on glaciers. Science advisor to NASA Earth. US Representative to the World Glacier Monitoring Service. Author of blog “From a Glaciers Perspective”. Grandparent, avid skier, dog walk/runner.
Jared Rennie @jjrennie.bsky.social Research Meteorologist at NOAA’s NCEI. We archive your data and I play with it. On this hell site too along with all the others. 
Simon Donner @simondonner.bsky.social Climate scientist, prof at UBC, writer, speaker, aquatic mammal, dragger of sand into the house.
Doug McNeall @dougmcneall.bsky.social Science Lead for Data-Driven Climate Modelling @ UK Met Office | University of Exeter | AI, UQ, Countering mis/disinformation.
dougmcneall.com
Reto Knutti @retoknutti.bsky.social Professor for climate physics at @ethzurich.bsky.social.
Prof. Bob Howarth @profbobhowarth.bsky.social Professor at Cornell University, Earth system scientist, co-EiC Land-Ocean-Atmosphere Research
Bob Henson @bhensonweather.bsky.social Meteorologist and journalist. I cover wacky weather, changing climate, and how we live, love, work, get around, and dream. 
Bob Kopp @bobkopp.net #Climate & sea level science + policy. Rutgers University. All views my own. www.bobkopp.net
Dr Adam Levy @climateadam.bsky.social Climate scientist, journalist, YouTuber, Adam 🏳️🌈
https://www.youtube.com/ClimateAdam/
https://www.climateadam.com
Mark Parrington @mparrington.bsky.social ECMWF senior scientist working on monitoring global #wildfire emissions, #airquality, atmospheric chemistry & #scicomm for the #CopernicusAtmosphere Monitoring Service @copernicusecmwf.bsky.social @ecmwf.int
Ken Caldeira @kencaldeira.com Mostly mentoring a group of postdocs.
Conceptual Investigations Unit, housed at Stanford.
Senior Scientist at Gates Ventures.
climate / energy / etc
https://ciunit.org
Posts imperfectly represent the views of my former self and not my employer.
Naomi Oreskes @naomioreskes.bsky.social Historian, Earth Scientist, Writer, Public Intellectual.
Books: Merchants of Doubt; Collapse of Western Civilization; Science on a Mission; Discerning Experts; Why Trust Science?; The Big Myth. Loves: Chocolate, Red Wine, Skiing, family. Hates: Beets.
Prof. Sonia I Seneviratne @soniaseneviratne.bsky.social Professor at ETH Zurich, IPCC WGI Vice-chair.
#Climate #Extremes #Land.
Citizen/mum/scientist. Personal account.
https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_Chapter11.pdf
Twitter/X: @SISeneviratne
https://www.iac.ethz.ch/people/sonia
Dr. Tessa Fisher @tessafisher.bsky.social Research Facilitator, ASU| Astrobiologist | Trans Lesbian | SFF Writer | Lukewarm Ecosocialist | Union Woman | One Half of @asabpod.bsky.social | She/Her| 🌹
www.tessafisher.com
Words and opinions are my own.
Valérie Masson-Delmotte @valmasdel.bsky.social PhD, climate scientist @lsce-ipsl.bsky.social @CEAParisSaclay @IPSL_outreach @hc_climat. Was co-chair @ipcc.bsky.social (AR6 WGI). Member of French Academy of Technology and Academy of Sciences.
Christine Wiedinmyer @cwiedinm.bsky.social Science administrator at CU Boulder. Study air quality and pollution emissions, all things wildfire and open burning. Women in science. Go Buffs! 
David Romps @davidromps.com Climate physics
Peter Stott @stottpeter.bsky.social Climate Scientist at Met Office and University of Exeter. Author of Hot Air: The Inside Story of the Battle Against Climate Change Denial
Dr. Andrea Dutton @drandreadutton.bsky.social Geologist. Obsessed w/ carbonates, isotopes, sea level & climate. Professor at Univ. Wisconsin-Madison. she/her
Peter de Menocal @pdemenocal.bsky.social President & Director
Woods Hole Oceanographic Institution 
Adam Terando @adamterando.bsky.social Climate scientist and urban/transportation policy dilettante. Personal account with my own opinions.
Sarah E Myhre PhD @sarahmyhre.bsky.social Partnerships @DemocracyForward.org | Washingtonian | Climate and Democracy | Philanthropic strategy | Views are my own | Would rather be skiing | UC Davis, WWU alum
Deke Arndt @deke-arndt.bsky.social I'm the Director of NCEI, and work with amazing people, but this is my personal account. Climate. Data. Risk. Okie stuff. Asheville stuff. Sugar by the bushel; molasses by the ton. Skipping leg day since 1998. 
Ankur Desai @profdesai.bsky.social Professor and Chair@UW_AOS Meteorology, Ecology, Climate Sci (Biosphere-Atmos) Parent to 3 kid chaos. Https://flux.aos.wisc.edu
Julia Verville @juliahv.bsky.social Climate, energy, & forests. Midwesterner in the Golden State. Personal account.
Benjamin DeAngelo @bendeangelo.bsky.social Principal and Founder, Operation Future, LLC. Adjunct Professor, Howard University. Former Director, EPA Office of Climate Adaptation & Sustainability. Dad, drummer, cyclist.
Allison Crimmins @acrimmins.bsky.social Lady who climates. Executive Director for Industry Proving Ground at NOAA: Director of the Fifth National Climate Assessment. View my own. She/her.
Wolfgang Cramer @cramer-bondeau.fr #Climate & #biodiversity emeritus scientist, professor of global #ecology, #CNRS, MedECC, #IPCC, Acad. d'Agriculture de France.
Occasional rail travel and bicycle geek. 🇩🇪 🇫🇷 🇬🇧 🇸🇪 🇳🇴 https://tinyurl.com/wcrame
Pierre Friedlingstein @pfriedling.bsky.social Born at 321 ppm. Climate & Carbon Cycle Scientist. Prof @UniofExeter Directeur de Recherche @CNRS @GlobalCarbonProject
Logan Mitchell PhD @loganemitchell.bsky.social Climate scientist & energy analyst @UtahCleanEnergy. #ElectrifyEverything #EnergySky #GreenSky 🔌💡. Posts my own.
Jeff Dukes @dukesjeff.bsky.social 🌎🌱Climate change science and global change ecology at Carnegie Science.
[Private account, not representing employer]
Sarah Burch @sarahlynnburch.bsky.social Professor, Canada Research Chair - Sustainability transitions and climate change policy. University of Waterloo, 🇨🇦
Executive Director, Waterloo Climate Institute. IPCC LA 6AR, WGIII.
Prof Paul Williams @profpaul.bsky.social Professor of Atmospheric Science at University of Reading. Studies turbulence, jet streams, aviation, climate change.
https://www.met.reading.ac.uk/~williams/
Harold Brooks @hebrooks87.bsky.social Research meteorologist-tornadoes and forecast evaluation. Weather impacts. Volleyball referee-NCAA/PAVO, NFHS, USAV. Mathcounts competitive math coach.
Dr. Asmeret Asefaw Berhe @aaberhe.com Scientist, educator, advocate for inclusive excellence in STEM. Former Director of DOE Office of Science.
Soil biogeochemistry | Climate Change |Political Ecology.
aaberhe.com
Rob Moore @rmoore2023.bsky.social Works on issues related to climate adaptation, insurance, policy, and escalating disaster risks due to climate change. Also a real downer at cocktail parties.
David Harkin 🌍 @davidharkin.bsky.social Climate adaptation and resilience strategist at Network Rail Scotland. Former Climate Scientist and Environmental Risk Manager at Historic Environment Scotland.
#ClimateAdaptation #ClimateAction #ClimateChange
Dr. Melissa Burt @drmelissaburt.bsky.social Atmospheric & Climate Scientist, Social Justice, Atmospheric Science Education Researcher, Co-founder Science Moms
Mama, crafter, baker
Karin Kirk @karinkirk.bsky.social Geologist, skier, science journalist for Yale Climate Connections. Former Earth and climate science writer for NASA, but our federal govt decided these topics are threatening to them. More determined than ever to keep pushing for climate solutions.
Dr. Ramesh Laungani @drrambio.bsky.social Assoc Prof of Env. Science @Marist, 🌾 & biochar ecology, @ourwarmregards host, #1000STEMWomen founder,#scicomm, fighting #ClimateChange. Messages=mine
https://www.marist.edu/science/faculty/ramesh-laungani
Dr. Barb Mayes Boustead @windbarb.bsky.social Weather, climate, writing, #scicomm, teaching, LIW, history, sports, wagering, equity. Author of WILDER WEATHER, published by SDHS Press. Nebraska/Midwest/Michigan. She/her. #binders #amwriting
Damon Matthews @damonmatthews.bsky.social Climate scientist at Concordia in Montreal, co-creator of climateclock.net, Director of sustainabilitydigitalage.org and member of Canada's Net-Zero Advisory Body. Interested in carbon budgets, nature-based solutions, and many other things
Diana Urge-Vorsatz @dianaurge.bsky.social Professor, Central European University
@CEU
Vice Chair, Intergovernmental Panel on Climate Change
@IPCC_ch
Daniel Gilford, PhD @danielgilford.bsky.social FL Climate scientist, studying hurricanes & communicating climate change. I love my family, comics, coffee, writing, Xian deconstruction, and my found family: the X-Men.
🏳️🌈, 🌎, 🌀, he/they
All views expressed are my own.
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.
Douglas Maraun @dmaraun.bsky.social Climate scientist. Leader of the Regional Climate Research Group at @wegenercenter.bsky.social, @universityofgraz.bsky.social. @ipcc.bsky.social AR6 Lead Author. Father of two. https://homepage.uni-graz.at/en/douglas.maraun/
Stephan Lewandowsky @lewan.uk Professor of Cognitive Science, University of Bristol. Homepage: https://www.lewan.uk
Gabi Hegerl @gabihegerl.bsky.social Climate scientist
John Cook @johnfocook.bsky.social Researches climate & vaccine misinformation at the University of Melbourne. Founded SkepticalScience.com. Published Cranky Uncle vs. Climate Change. Developed the games Cranky Uncle (crankyuncle.com) and Cranky Uncle Vaccine (crankyunclevaccine.org)
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
Jos Olivier @josolivier.bsky.social Retired* scientist on greenhouse gas emission sources and energy use: estimates, trends, targets, climate, mitigation & science (incl global pollution). RT ≠ endorsement. Born ±315 ppmv CO2.
*Formerly at Netherlands Environmental Assessment Agency (PBL).
Dr. Peter Neff @icy-pete.bsky.social Assistant Prof U Minnesota. Antarctic history from ice cores. Antarctic science. Views mine.
Michael Wehner @michaelfwehner.bsky.social Climate scientist
Franciska de Vries 🟥 @frantecol.bsky.social Prof. Earth Surface Science | climate/global change impacts on ecosystems | ❤️ soil biodiversity | nuchtere Fries & nearly English | columnist De Levende Natuur | runner | mum | she/her
Rao Kotamarthi @dscale.bsky.social Regional and Urban Scale Climate, Impacts, Risks and adaptation
Donna Charlevoix, PhD @charlevo.bsky.social Scientist, educator, senior executive, MBC patient advocate, mother, wife, sister, cat-lover; looking to make a difference in all aspects of life.
Nancy B. Grimm @drnitrogen.bsky.social Ecosystem scientist and biogeochemist, urban ecology and urban futures, resilience to climate change and extreme events. 47+ years at Arizona State University. Mom - grandmom - dog mom ❤️ SLC
Jay Famiglietti @jayfamiglietti.bsky.social Satellite hydrologist, ASU Global Futures Professor, water and climate science communicator, leader of the WISE Research Group @wisegrouporg.bsky.social. Formerly NASA JPL Senior Water Scientist and ‘What About Water’ podcast host.
John Burns Research and Consulting @jbrec.com Our team produces independent research and custom consulting advice to help executives make the most informed decisions possible.
Adam Tooze @adamtooze.bsky.social Chartbook Substack https://adamtooze.substack.com/
OnesandTooze podcast https://foreignpolicy.com/podcasts/ones-and-tooze/
C******* University historian, Director European Institute, Chair Cttee on Global Thought.
Economics, history, theory, politi
Karen Jeffrey @karenojeffrey.bsky.social Data Science and AI Fellow
University of Glasgow
AI, labour markets, & policy responses
karenjeffrey.github.io
Karen Attiah @karenattiah.bsky.social Martial Artist. Executioner of Mediocrity.
Ex-Washington Post.
Substack: https://substack.com/@karenattiah?r=2bz6j&utm_medium=ios
Rogue Radical Professor: @resistanceschool.bsky.social
Betsey Stevenson @betseystevenson.bsky.social Former Member of President Obama’s Council of Economic Advisers & Chief Economist at Labor. Current academic economist at Michigan. Always an economist at home.
The New Yorker @newyorker.com Unparalleled reporting and commentary on politics and culture, plus humor and cartoons, fiction and poetry. Get our Daily newsletter: http://nyer.cm/gtI6pVM
Follow The New Yorker’s writers and contributors: https://go.bsky.app/Gh5bFwS
Ted Gioia @tedgioia.bsky.social Ted Gioia is author of 12 books, including The History of Jazz and Music: A Subversive History. His newsletter is The Honest Broker (www.honest-broker.com)
Paul Beckwith @paulhbeckwith.bsky.social Climate Systems Scientist
Website: PaulBeckwith.net
YouTube Channel: https://youtube.com/@paulhbeckwith?si=3ijcLGbn7mZgQZHM
Angie Setzer @goddessofgrain.bsky.social Cash grain trader, market analyst, agribusiness consultant.
I love grain.
Celeste Ng @pronounced-ing.bsky.social Fiction writer (EVERYTHING I NEVER TOLD YOU, LITTLE FIRES EVERYWHERE, OUR MISSING HEARTS). Science nerd, ex-Clevelander, embarrassingly sincere. Blue canary in the outlet by the light switch who watches over you. she/her. www.celesteng.com
Climate Risk Economics @climateeconomics.bsky.social Science, analysis, and news around climate change's impacts on the economy, focusing on growth, inflation, investment, companies, consumers #ClimateRisk #ClimateImpacts
Joeri Rogelj @joerirogelj.bsky.social prof. climate science & policy | Imperial College London | 1.5C/net zero/carbon budget/pathways/justice | IPCC & UNEP lead author | ESABCC member | father
Thomas Piketty @thomaspiketty.bsky.social Professor at EHESS & PSE
Co-Director, World Inequality Lab
inequalitylab.world | WID.world
http://piketty.pse.ens.fr/
Nicolle Wallace @nicollewallace.bsky.social 
Kate Shaw @kateshaw.bsky.social Law prof @Penn, cohost Strict Scrutiny podcast 
Ezra Klein @ezrakleinbot.bsky.social Ezra Klein’s tweets, articles, clips and podcasts on Bluesky.
Jake Tapper, long-suffering Philly sports fan @jaketapper.bsky.social Dad, husband, CNN anchor, author, doorman to three dogs and a cat.
Tressie McMillan Cottom @tressiemcphd.bsky.social Professor. Sociologist. NYTimes Opinion Columnist. Books: THICK, LowerEd. Forthcoming: 1)Black Mothering & Daughtering and 2)Mama Bears.
Beliefs: C.R.E.A.M. + the internet ruined everything good + bring back shame.
“I’m just here so I don’t get fined.”
Angie Rasmussen @angierasmussen.bsky.social Virologist. PI working at but not speaking for USask. Co-EiC of Vaccine. 🇺🇸 in 🇨🇦. Emerging viruses, pathogenesis, zoonosis, host responses, dogs, football, off-color language, transcriptomic chaos. Opinions my own.
Will Lockett @lockettwill.bsky.social Just a chaotic autistic man looking for meaning in the world
Stephen King @stephenking.bsky.social Writer
Governor JB Pritzker @govpritzker.illinois.gov Husband and father. Proudly serving as Illinois’ 43rd governor.
Sarah Cooley @co2ley.bsky.social Ocean advocate, community builder, climate scientist. I make sure the ocean interior is healthy so you don't have to. 
British Antarctic Survey 🐧 @bas.ac.uk We're the UK's polar research institute 👋 Uncovering the secrets of Earth's frozen places, doing science for a sustainable planet.
Looking for a seriously remote job? https://bas.ac.uk/vacancies