John Holbein @johnholbein1.bsky.social Associate Professor of Public Policy, Politics, and Education @UVA.
I share social science.
RealClearScience @rcscience.bsky.social RCS is your portal to clear, relevant, and evidence-based science news and opinion. We strive to bring you the best of #scicomm.
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.
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/
Gavin Schmidt @climateofgavin.bsky.social Climate scientist, juggler. Bikes etc. Blogging at https://www.realclimate.org - data visualization, explainers, and debunking.
Peter Hadfield @therealpotholer54.bsky.social Yeah, this really is Potholer54 from YouTube! Some imposter grabbed my name on Blue-sky before I could.
@potholer54.bsky.social @potholer54.bsky.social This account name has been reserved for Peter Hadfield.
See also: @therealpotholer54.bsky.social
VegPlotter: Online Vegetable Garden and Allotment Planner @vegplotter.com The best online Vegetable Garden & Allotment planning software to get you organised in the garden.
Fully featured garden planner vegplotter.com
Frost dates and growing zone calculator frostdates.com
Richard Allan @rpallanuk.bsky.social Professor of climate science at the University of Reading: http://www.met.reading.ac.uk/~sgs02rpa/
Rocky Rex @rockyrex.bsky.social The Time-Warped Tyrannosaur.
Science, climate change, Deep Time, Hothouse Earth.
#MakeScienceGreatAgain
Also still on FB:
https://www.facebook.com/profile.php?id=100005225389143
I recommend Ecosia search engine
https://www.ecosia.org/?c=en
All Our Yesterdays @allouryesterdays.bsky.social Daily "on this day" posts abt climate history - science, politics, protest, technology, etc (from 1661 to 2024). Also interviews, commentary.
Ideas for posts? Tag or chat...
Run by @marchudson.bsky.social
Zack Labe @zacklabe.com Climate Scientist at @climatecentral.org | PhD | Passionate about improving science communication through data-driven stories | Harrisburg, PA | https://zacklabe.com/
Views, thoughts, and opinions expressed here are only my own.
Kevin Pluck @kevpluck.bsky.social Van life-ing in Aotearoa
Prof Ian Hall @ianhall.bsky.social 🌍 Climate Scientist & Palaeoclimatologist | Marine Geologist | Professor @ Cardiff University | Ageing marathon runner | #FirstGen | He/Him | 🏴 🇪🇺
The climate has changed before. Earth’s past can tell us a lot about what happens next.
BONUS @thedisproof.bsky.social Science comms and education (Presented research at UN Climate conference). I debunk human induced climate change denial. @TheDisproof on twitter. Youtube https://youtube.com/@thedisproof?si=GpamUu43gBmmZyya Opinions mine, Facts from science.
Yellow Dot Studios @yellowdotstudios.bsky.social Non-profit media studio from filmmaker Adam McKay (Don’t Look Up) exposing Big Oil lies and the dangerous new world they've created. Jokes included but not guaranteed.
Christopher Webb @cwebbonline.com Husband | Dad | Designer | California Native | Lifelong Dem | Strategist
Ryan Katz-Rosene, PhD @ryankatzrosene.bsky.social Professor studying contentious climate debates, climate urgency, 'Climateflation', and society-environment relations (and all things Canada 🇨🇦). Co-Host http://EcopoliticsPodcast.ca Views are my own (not my employer's)!
Climate Town @climatetown.bsky.social Solve climate change or die trying.
Full videos on YouTube👇
https://linktr.ee/climatetown
Dr Sarah Hendrica Bickerton 🏳️🌈 @sarahhbickerton.bsky.social Lecturer in public policy, STS sociologist, tangata tiriti, feminist, geek, coffee-addict, lesbian, urbanist, electric motorcyclist, ex-Chicago, half Dutch, wannabe Carol Danvers/Clarke Griffin/Kate Kane. She/her 🇳🇿🇳🇱
https://about.me/sarahhendricabickerton/
Bill Weil @billweil.bsky.social Climate investor since the olden days, seeking innovative solutions to maximize impact, working like the planet is burning.
🩸💀 The Horror Guru 💀🩸 @thehorrorguru.bsky.social Guru of the Horror Variety 😈
Horror Film Critic 📽
Horror Host 😂
Horrortuber ▶️
He/Him 🤷♂️
#MutantFam #Horrortube #Horror #Horrorfam #Filmsky #Horrorsky #HorrorCommunity
https://linktr.ee/TheHorrorGuru
@le0pard13.bsky.social @le0pard13.bsky.social Generation Jones. No DM, please.
Dave Vetter @davidrvetter.bsky.social Climate and sustainability writing and communications; duck monitor.
Jan Kirsch, M.D., M.P.H. @drjanicekirsch.bsky.social Medical Oncologist/Hematologist
Occupational and Environmental Medicine
Public health
Climate activist
Universal Health Care Advocate
@umsonst.bsky.social @umsonst.bsky.social Earth-System Nerd who follows from a mechanistic observational perspective the extinction level event we are just now triggering. Earth is unfortunately not a sluggish system changing slowly but a highly non-linear system which can change fast...
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
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
Katharine Burke @katharineburke.bsky.social Author: EARTHWARDS: Transformative Ecological Education. (TREED) MEd. Nature Ecology and Sustainability, Regenerative Practitioner (Regenesis), Permaculture farmer and facilitator of The Work that Reconnects. 
Katharine Sanderson @kms163.bsky.social science journalist | gig rower | cyclist | parent | Cornwall
Katharine Gammon @kategammon.bsky.social Science, health, tech, environment journalist writing for The Guardian, The Atlantic, Nautilus, Forbes and others. Living by the beach.
Katharinegammon.com
Kathari News @kathari.news We deliver timely, comprehensive and reliable news and views on the global energy transition | https://kathari.news/ | #EnergySky
Katharina J. Peters @kjpeters.bsky.social Behavioural ecologist @UOW Marine mammals and other squishy things 🦭🐬🐳🐾 🐨 Research leader at MAVELab www.mavelab.org . viewsmyown 
Katharine Norbury @katharinenorbury.bsky.social Curious, walker, swimmer, thinker; anam cara.
WOMEN ON NATURE
@Unbounders
THE FISH LADDER
@BloomsburyBooks
Shortlist
@WainwrightPrize
#neurodivergent
@UnitedAgents
Katharina Schröer @katharinaschroeer.bsky.social TT-Prof at Uni Freiburg, head of Climate Geography Lab CliG. Climatology and impacts of extreme events. Severe convective weather and hail. Interested in climate across scales, Python & mountains. Mom of two. 💚🌎🐍👩🏼💻🌩️⛈️🏔️
Katharina Schipkowski @katschipkowski.bsky.social Journalistin @taz.de
Politik, Soziale Bewegungen, Klima
Podcast: Klima Update https://taz.de/Podcast-klima-update/!t5783392/ 
Katharina Rogenhofer @krogenhofer.bsky.social Vorständin & Sprecherin KONTEXT | Autorin "Ändert sich nichts, ändert sich alles!" | ehem. Leiterin Klimavolksbegehren | Mit-Initiatorin Fridays for Future Österreich | Naturschutz Uni Oxford | Zoologie Uni Wien
Katharina Kropshofer @kkropshofer.bsky.social Journalistin @falter.at
Mitgründerin @netzwerkklimajourn.bsky.social, @andererseits.org
all things science, climate, biodiversity
Dr. Catherine Macdonald @drcatmac.bsky.social Marine scientist and teacher Field School & University of Miami. Director of sharktagging. NatGeo Explorer. Shark & ray ecology, biology, conservation. She/her. 
Cat Brinkley @drdrcatbrinkley.bsky.social Prof with a focus on #OneHealth- health is shared between humans, animals, and the environment #planner #veterinarian Interested in planning science, history of food systems, and future of development
Catherine Morehouse @cmorehouse.bsky.social PowerLines Communications Manager. catherine@powerlines.org. Previously: POLITICO power grid reporter. Minnesotan.
Catherine Fraser @cathfraser.bsky.social climate @dataforprogress.org | she/her
https://dataforclimateprogress.substack.com/
Kathryn Harrison @profkharrison.bsky.social Climate policy researcher, UBC Professor, chemical engineer, political scientist, feminist, cyclist. Persistently hopeful, but losing patience!
Kate Raworth @kateraworth.bsky.social Author of Doughnut Economics, Co-founder of Doughnut Economics Action Lab, Senior Teaching Fellow at Oxford Uni Environmental Change Institute. doughnuteconomics.org
Dr. Katharine Wilkinson 🌱 @kkwilkinson.bsky.social 🤸🏻♀️ Climate author, teacher, creator 📚 Climate Wayfinding (new!), All We Can Save, Drawdown, etc ✨ Lead @allwecansave.bsky.social 🎙 Co-host, A Matter of Degrees 🍑 ATL
True loves: 🐎🐕🐈⬛🕺🏼🌳🌖⛰️
Katharine Mach @katharinemach.bsky.social Environmental Science and Policy Professor at University of Miami Rosenstiel School and Abess Center.
Climate-related risks and response options to address them. Views my own.
climateprep.rsmas.miami.edu/index.html
Kathryn Chelminski @kathrynchelminski.bsky.social Author of Gov Energy Transitions (CUP)⚡️🔌💡 @Brown CSL Fellow; Personal account, views are my own
katie brigham @kbrigham.bsky.social climate tech reporter (aka ENERGY DOMINANCE reporter) at @heatmap.news | signal: katieb.40
📍 Seattle, WA
Kate Mackenzie @katemac.bsky.social finance, energy, climate, geopolitics, industrial policy
@thepolycrisis.bsky.social
in Australia -> DMs hard to retrieve, best to email
Kate Lawson🍁 @kattl.bsky.social English Prof, U Waterloo, Victorian literature
Trees, urban forests, bikes, climate change, etc. etc.
peregrine kate (she/her) @peregrinekate.bsky.social cat lady, Democratic PD, gardener, birder, mother, grandmother, recovering academic (UMich Am Cult PhD), TNG-CWA member, climate justice activist, local TEC admin, Third Act MI co-fac (roles not ranked). #ShutDownLine5 #WaterIsLife #OldAndBold
Kate Cahoon @katecahoon.bsky.social She/her. Climate campaigner with 350.org & reproductive justice activist. Based in Berlin, originally from Naarm (Melbourne).
Kate Gordon @katenrg.bsky.social CEO at CA FWD; Non-resident Scholar Carnegie Inst. Energy, climate, & economic development nerd (plus lover of Oxford commas); speaker/thinker/writer when I have time; proud public school parent. Former DOE & Office of CA Governor.
Kate Knuth @kateknuth.bsky.social Climate, democracy, civic-type things. Rooted in Minnesota and Minneapolis, stretching beyond.
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
Kate Abnett @kateabnett.bsky.social Journalist. Senior correspondent covering climate change and energy for Reuters in Brussels. Former #EUETS nerd at ArgusMedia. Views mine.
Kate Petersen @k8petersen.bsky.social Writer. Science and climate communicator. Former Stegner fellow at Stanford. Daughter of Gallahop. Opinions are my own.
Kate Johnson @kateplantphys.bsky.social Plants & climate extremes🌳| Art, words & nature | Marie Skłodowska-Curie #MSCA Postdoc fellow @creaf.cat | Co-manager of thatsscience.org (follow us!) thatssciencetas.bsky.social | Fulbright '21/22 | she/her 🏳️🌈|🌈🦋|🍉
From Lutruwita/Tasmania, in Barcelona 🌏
Kate Moran @katemoran.bsky.social 🇨🇦Global citizen for kindness, climate action, ocean protection. Leguminati. Views are my own.
Kate Jean Smith @katejean.bsky.social Comms @UNDP, focused on climate adaptation 🌏 Confessed news junkie with interests in #media #socialmedia #digital #climatechange - views all my own.
Kate Clayton @kateclaytn.bsky.social 
Taylor Kate Brown @taylorkatebrown.bsky.social Investigative and solutions climate journalism. Signal: taylorkatebrown.98 | taylorkatebrown.com | previously: ProPublica, SFChronicle and BBC. I can also make your emails not suck.
Kate Hoerster @katehoerster.bsky.social Day: PTSD treatment & recovery. Night: climate, transportation, & public health advocacy. 24 hours: a more just world for my kids & yours. She/her. Views my own.
Katie Harris @katietherockdoc.bsky.social Archaeologist. Climate & environmental policy wonk. She/her.
Katie Jones @katiejonesmpls.bsky.social “Hope and resilience are the enemy of fear.” - Sophie and Colin Hortman
https://linktr.ee/katiejonesmn
Katie Stuble @holdenrestoration.bsky.social Research scientist @ Holden Arboretum. Ants, plants, interspecific interactions, and global climate change!
Katie Holten @katieholten.bsky.social Artist | Author of THE LANGUAGE OF TREES | Host of Sunday Salons | Rights of Nature 🌍 Long COVID 😷 Dysautonomia | Irish in NYC / Ardee | Born @331ppm | Climate Justice
Bio: https://www.katieholten.com/about
Language of Trees: https://bit.ly/LanguageTrees
Katie Myers @stopitkatie.bsky.social Appalachian regional climate reporter @ Grist/ Blue Ridge Public Radio. I write plays and other weird stuff sometimes.
Katie Matthews, PhD @katieocean.bsky.social Lapsed geologist, Chief Scientist at @oceana.bsky.social, dog mom. DC born and raised. Philly is my 2nd home.🖖
Skeets my own, *not* my employer’s. Mostly oceans + science + climate + policy. A little politics (sorry) and Phillies (not sorry).
Catherine McKenna @cathmckenna.bsky.social 🌱 CEO, Climate & Nature Solutions; Chair UN Net Zero.
🇨🇦Former Minister of Environment & Climate
🏃♀️Author, Run Like a Girl
Order your copy today ⬇️
www.catherinemckenna.ca
📩 contact@climateandnature.com
Dr. Katie Glover (she/her) #BLM @katieglover.bsky.social Assoc Director of Environmental Education @stanfordjrbp 'Ootchamin 'Ooyakma 🌲 Nat Geo Explorer 🌏 UMaine Climate Change Institute Affiliate 👩🔬 Born at CO₂ = 335. Views my own. 🏳️🌈
Katie Sieradzan @katiesieradzan.bsky.social PostDoc researcher at Oregon State University
Katie Smirnova @katiesmirnova.bsky.social Nature Conservation - Climate Action - Community Engagement
Catherine Queen @catherinequeen.bsky.social Senior Lecturer in Planning @ Uni of Liverpool. Public disengagement from planning for energy futures, inclusive cities, climate communication.
Catherine Wolfram @cwolfram.bsky.social Climate and energy economist at MIT Sloan. Former DAS at Yellen Treasury.
Catherine Wong @catherinewong01.bsky.social @UNDP Global Team Leader - Climate & Security Risk | #ClimateSecurity Mechanism | #ClimatePromise #WaterforPeace #msc_myl | @UNDPCPS.bsky.social | Views my own.
Catherine James @catherinejames.bsky.social interested in livestock production, comms + extension • farmer for climate action • generally found pottering in my garden • Dja Dja Wurrung and Yorta Yorta Country, Australia
Catherine Johnston @catherinejohnston.bsky.social Wildlife, Climate Law, Irish Fiction, Trees. Wexford Citeóg.🌳💚📚🇮🇪🇪🇺
Catherine Cheng @1amphoenix.bsky.social Climate Founder | Angel Investor | Event Planner
Cate Macinnis-Ng @loraxcate.bsky.social Tree ecophysiologist, parent, ocean paddler and brownie baker. I'm interested in forests, water, carbon, climate change. Tangata Tiriti and manuhiri, she/her, Auckland Uni Prof, Lead Author IPCC AR7 WGII, Senior Editor J Applied Ecology
Katharina von Busch @kathavonbusch.bsky.social Between law and politics. Human Rights. Environmental and Climate Litigation. Subsaharan Africa 🌍♻️⚖️
Berlin based.
actually three quarter life crises in a trenchcoat.
Katharina Küpfer @kkuepfer.bsky.social PhD student working on the serial clustering of multiple extreme events at the Institute of Meteorology and Climate Research at @KITKarlsruhe
Katharina @kvds.bsky.social she/her
Campaigning for protection of forests and biodiversity, climate justice and protection of human rights. @greenpeace.de
Views are my own.
Katharina Wecker @katharinawecker.bsky.social freelance journalist | covering the climate crisis, environment & women | interested in what and how we will eat in the future
Kat Davis @katharina-davis.bsky.social Working on climate + environment for international organizations. Interested in urban design, public spaces, social justice, environmental & climate psychology, mindfulness, visual arts, interior design.
Kat Gonz @krgonzales.bsky.social 🗨️ Talks about: Climate change, colonialism, labor justice, and eco mysticism
terradivina.substack.com
Kat Kerlin @katkerlin.bsky.social Environmental science writer, press officer, pro #scicomm -er for UC Davis. Covering climate change, ecology, conservation, water and wildlife. My other brain is full of paint. Views my own.
Kat @kitkathy.bsky.social (she/her) ecologist and public servant in the great lakes basin. I love hiking, photography, ceramics, fiber arts, sci-fi, dnd, & podcasts. 🐘🌊🌾🌲my dog is my #1 lad 🐕
Kat Morgan @muralhunter.bsky.social Muralhunter 🎨 Photographer 📷 Naturalist 🌲 Climate Steward 🌏 EcoFeminist 🏳️🌈 Justice Builder 📣 AntiRacist ✊🏽 Caretaker 🦋 Activist 🫱🏽🫲🏾 Knitter 🧶
Living on unceded Ohlone Rumsen Coastanoan land. she/her
Curiosity doesn’t kill this Kat.
Kat Haber @kathaber.bsky.social Great Marcher for Climate Action, climate coach, TEDxVail organizer, TRUST Climate Action Strategists founder, mama/gramma/great-gramma, WORLD PULSE Digital Ambassador, WE Rotary Club of International Peace Charter President, Vail back bowl skier, LEAPer
Kat So @kso23.bsky.social Climate and Conservation Policy Advocate | Campaign Manager at @americanprogress.bsky.social | Please be nice to me | Views are my own
Katherine T. Tyson @katherinettyson.bsky.social Day job policymaking on climate change/adaptation gap. Research public goods provision (IR, IPE, Law)
Nature | Academia | Disability | Politics | LGBTQ+ | BookTok | Writer | Anime | Gamer | Fandoms | Photography
☕️📚🇨🇦🇬🇧🔸🏴🏳️🌈🐈⬛🍵
Oxford | UBC | Columbia | Waseda
Dr. Cat Lambert @risky-on-rocks.bsky.social Asst. Prof in risk/science/environmental communication at Northeastern University | Studying climate, hazards, renewable energy, and how humans make sense of it all
Katherine Bagley @katbagley.bsky.social Editor-in-chief at @grist.org. Climate journalist. Sleep-deprived mom. Mint chip ice cream enthusiast. Views expressed are my own.
Dr Katherine Whyte @kateywhyte.bsky.social Senior Ecological Statistician @bioss.bsky.social 📊
Scientist in marine mammals, seabirds, renewable energy, statistics & animal movement.🌊🦭🐧🐾
STEM Ambassador.👩💻 Own views.
https://katherinefwhyte.co.uk/
Katja Kircher @katjakircher.bsky.social Research Leader at VTI, Sweden. Sustainable transport, active travel. Cycling long and short distances.
eng/swe/ger- C Catherine MItchell @catherinemitchell.bsky.social Professor Emerita of Energy Policy, University of Exeter. My views only.