U.S. Rep. Kathy Castor @usrepkathycastor.bsky.social ⚡️Tampa Bay's Congresswoman⚡🌴🌤🌅 🇺🇸 People Over Politics! 🇺🇸 former Chair of the Select Committee on the Climate Crisis 🇺🇸 #FL14
Ross Macfarlane @rossmacfarlane.bsky.social Advocate for democracy, climate action, & environmental justice. Board Chair with Way to Win Action Fund & Director with Sierra Club Foundation & Clean Energy Transition Institute, but takes here are only my personal views.
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.
Lisa Sorg @lisasorg.bsky.social NC reporter, Inside Climate News. Native Hoosier, fan of lichens, ants, rivers. Ardent upcycler. Lost the state spelling bee on the word “gauche.” Signal: 919-536-2341 
Martha Pskowski @psskow.bsky.social Reporter for Inside Climate News in El Paso, Texas. Reporting on water, oil, gas, borders.
Lee Hedgepeth @leehedgepeth.bsky.social Alabama reporter for Inside Climate News. Storyteller. Alabamian. I write Tread by Lee, a newsletter of Southern journalism. Sign up at www.TreadbyLee.com
Kiley Price @kileyprice.bsky.social Reporter at Inside Climate News, writing Today's Climate newsletter. Words in National Geographic, Time, Slate and more | NYU SHERP 41
Subscribe to our newsletter for all things climate: https://insideclimatenews.org/newsletter/
Jake Bolster @jakebolster.bsky.social Wyoming and Western reporter for Inside Climate News.
jake.bolster@insideclimatenews.org, signal: @jbolster.97
lauren dalban @laurendalban.bsky.social 
American Friends Service Committee @afsc-org.bsky.social AFSC works for a just, peaceful, and sustainable world free of violence, inequality, and oppression. We join with people and partners worldwide to meet urgent community needs, challenge injustice, and build peace.
Save the Boundary Waters @savetheboundarywaters.org The Campaign to #SavetheBWCA is leading the effort to gain permanent protection for the Boundary Waters Wilderness from sulfide-ore copper mining.
Bob Wheeler @rmwkenpo.bsky.social Dad of 2. Have best partner anyone could ask for. Central NY. Philanthropist. Environmentalist. Fitness enthusiast. Vegetarian. Trying to leave the world a bit better off. Here to resist the corruption together. 👊🏻🌊
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
Healthy Gulf @healthygulf.bsky.social Healthy Gulf's purpose is to collaborate with and serve communities who love the Gulf of Mexico by providing the research, communications, and coalition-building tools needed to reverse the long pattern of over exploitation of the Gulf's natural resources.
Karen Zraick @karenzraick.bsky.social Reporting on climate & environment legal affairs @nytimes.com, member @amejaglobal.bsky.social, neglectful gardener
Stanford Social Innovation Review @ssir.org We're a self-funded nonprofit publication with a mission to inform and inspire leaders of social change.
Support us by subscribing at ssir.org.
Get our free weekly newsletter: https://ssir.org/email
The Wilderness Society @wilderness.org Uniting people to protect America’s wild places🌲🌊🏔
National Parks Conservation Association (NPCA) @protectparks.bsky.social 🏞️ Protecting America's national parks since 1919
Elizabeth Manning @emanningak.bsky.social 
Bears Ears Inter-Tribal Coalition @bearsearscoalition.bsky.social A consortium of five sovereign Tribal Nations working together to protect the sacred Bears Ears cultural landscape.
bio.site/BearsEarsCoalition
Wild & Scenic Film Festival @wildscenicfilms.bsky.social Where Activism Gets Inspired
25th Annual Wild & Scenic Film Festival - Feb. 18-22, 2027
On Tour year-round!
https://linktr.ee/wildscenic
Earthjustice Action @earthjusticeaction.bsky.social Environmental laws are only as strong as the judges who uphold them. 501(c)(4) sister organization to @Earthjustice.org
Native American Rights Fund @nativerights.bsky.social Native-led nonprofit that holds governments accountable & protects Native rights, resources, and lifeways through litigation, legal advocacy, & expertise.🪶#NARF #NativeRights
CalMatters @calmatters.org CalMatters is a nonpartisan and nonprofit news organization. We write stories about California, for Californians.
Climate Water Action @climatewateraction.bsky.social Empowering meaningful action to protect waterways, communities & the global climate from pollution, habitat loss & carbon emissions. We focus on Pacific Northwest, USA w/ allies & colleagues around the world.
Fast, Fair and Full Fossil Fuel Phase Out.
Grand Canyon Trust @grandcanyontrust.bsky.social A conservation organization with a mission to safeguard the wonders of the Grand Canyon and the Colorado Plateau, while supporting the rights of its Native peoples. This is our hope-filled feed.
Patagonia @patagonia.com We're in business to save our home planet.
patagonia.com
Alex Abdo @alexabdo.bsky.social Litigation Director, Knight First Amendment Institute at Columbia University (he/him)
Knight First Amendment Institute @knightcolumbia.org The Knight First Amendment Institute at Columbia University defends the freedoms of speech & the press in the digital age through strategic litigation, research, policy advocacy, and public education.
https://knightcolumbia.org/
Anne Schechinger @anneschech.bsky.social Data, agriculture, food, CAFOs, sustainability, climate change, water, policy. Former Michigander and Iowan, current Minnesotan. Views are my own. 
Spirit of Grizzly 399 @spiritofgrizzly399.bsky.social Spirit of 399 is a social media campaign built in loving memory of the world’s most famous grizzly AND to amplify the need to protect endangered species & our National Parks
WE ACT for Environmental Justice @weact4ej.bsky.social WE ACT has been combating environmental racism and building healthy communities for people of color since 1988. Support our work at WEACT.org/donate
https://linktr.ee/weact4ej?utm_source=ig&utm_medium=social&utm_content=link_in_bio
Tim Donaghy @timdonaghy.bsky.social Research Director for Greenpeace USA. Lapsed astrophysicist, previously UCS.
Focused on climate, energy, environmental justice, science policy. Views are my own.
I'm @quinn43 on the birdsite. Also on Mastodon @timdonaghy@fediscience.org. he/him
miriam nielsen @zentouro.info urban worm farmer. ricocheting between bored and furious. currently furious. climate scientist.
i talk about climate change a lot. she/her 🏳️🌈
videos @ https://youtube.com/zentouro
Steven Donziger @sdonziger.bsky.social Advocate, writer & public speaker on human rights and corporate accountability. Lawyer on team that won historic $9.5b judgment against Chevron.
Watch the first episode of my podcast Donziger on Justice: https://www.youtube.com/watch?v=m_nXKlrdt8Y&t=71s
Julian Reyes @julianjonreyes.bsky.social Empowering communities with actionable climate services! Past: OSTP, USDA, AAAS STPF, State Dept. Views my own.
Giacomo Fedele @greengiac.bsky.social Environmental Scientist 👨🏼🔬 | Climate Adaptation 🔧🌍| NGO ♻️ | People in Nature 🌱| Trees 🤍 | Environmental Justice ⚖️ | Global and Local Climate Action 📣
Jeremy Bassis @bassisjeremy.bsky.social University of Michigan Glaciologist interested in climate change, ice sheets, sea level rise and equitable adaptation and mitigation | he/him/his |
David Schlosberg @dschlosberg.bsky.social Professor of Environmental Politics, University of Helsinki. Environmental, climate, multispecies, and ecological justice; just adaptation and resilience.
Sara Meerow @sarameerow.bsky.social Associate Professor, University of Colorado Boulder
Working on urban resilience, climate change adaptation (especially heat and flooding), and green infrastructure
Deirdre @flowinguphill.bsky.social Climate change and societal shifts from a complex systems perspective. Countering hate and disinformation.
Javed Ali, PhD @javedali.bsky.social Water Resources Engineer & Climate Data Scientist working on multi-hazards risk assessment, compound events, water systems modeling, impacts of natural hazards, climate resilience and climate change adaptation
🔗 Website: https://www.javedali.net
Mitchell Pavao-Zuckerman @mitchzuckerman.bsky.social Urban Ecologist | University of Maryland | cities, climate resilience, green infrastructure, soils, novel ecosystem services | fun: sci-fi photos music | he/him
Aparna Bamzai-Dodson @abamzaidodson.bsky.social human geographer doing stakeholder engagement for actionable climate adaptation science / in personal capacity / http://www.bamzai.com/aparna/ / she, her
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 🐈⬛ •🇸🇪
Laura Kuhl @laurakuhl.bsky.social Assoc. Prof. Northeastern University. Studying climate justice, adaptation, energy transitions, climate finance
Dr. A.R. Siders @sidersadapts.bsky.social audacious climate adaptation | assoc prof U of Delaware | social scientist + lawyer | #clifi #managedretreat #relocation #adaptationethics
Meade Krosby @meadekrosby.bsky.social Climate adaptation for nature and people @ Climate Impacts Group, University of Washington. Surfer/paddler. Settler on Coast Salish land. She/her.
Personal account - views mine.
Tim Smedley @timsmedley.bsky.social That environmental writer. Editor of The New Climate medium.com/the-new-climate. Author of The Last Drop https://a.co/d/i5grqa9 & Clearing the Air https://a.co/d/6AynmFZ. Climate columnist for @prospectmagazine.co.uk https://shorturl.at/eCU5h.
Nahel Belgherze @wxnb.bsky.social Mainly focused on covering extreme weather events worldwide. Also interested in climate dynamics, geohazards and satellite remote sensing.
Also on X: x.com/wxnb_
Yung En Chee @yungenchee.bsky.social Applied ecologist, conservation science, structured decision-making, spatial modelling, waterways research, she/her
#StayGrounded #NoFlyForWork #NoAISlopware
Proud to #PayTheRent
Greenpeace EU @greenpeace.eu Greenpeace's EU advocacy team in Brussels. Working on climate, energy, farming, forests, trade, pollution, lobby transparency, democracy and more
www.greenpeace.eu
Prof William Ripple @williamripple.bsky.social Distinguished Professor of Ecology-Oregon State University
Director-Alliance of World Scientists
Co-Lead author "The 2024 State of the Climate Report" https://doi.org/10.1093/biosci/biae087
Mongabay @mongabay.com Award-winning nonprofit media outlet publishing global environmental science & news in 8 languages via bureaus in India, Brazil, Africa, Latin America, Indonesia & US: https://mongabay.com
Sustainable Farming @sustainablefarming.bsky.social Sharing information about sustainable and ecological farming to help mitigate the effects of climate change and to work towards a sustainable food supply chain for earth.
Justin Mikulka @justinmikulka.bsky.social Research, analysis and opinion on the ongoing energy transition.
Writing about it at:
https://powering-the-planet.ghost.io
David Fenton @dfenton.bsky.social Host of Agitation Nation, a podcast from the Fenton Forecast newsletter. Author of The Activist’s Media Handbook: Lessons from 50 Years as a Progressive Agitator fentonforecast.com
Mitchell Dickau, PhD @mitchelldickau.bsky.social Climate modelling. Temperature overshoot. Remaining carbon budgets. Temporary carbon storage. Effect of climate change on outdoor skating in Canada.
Post-doctoral fellow, Concordia University
https://mitchell-dickau.github.io/
Annie Leymarie @annieleymarie.bsky.social Nature / Climate / More-than-humans / Degrowth / Social justice / Food, Farming and Land Use / Energy / Retrofits / Transport... with typos
London
rhammer @rhammersley.bsky.social energy/land-use/enviro attorney, ecologist, activist & political junkie, angler/hunter, cyclist/triathlete, music lover, futbol (Arsenal) & Michigan sports fan; live in Traverse City. (he/him)
Dr Rose O’Neill @roseoneill.bsky.social Ceo Campaign for National Parks. Fighting for wilder National Parks in England and Wales.
Nature. Landscape. Rivers. Access. Social justice.
Max Boykoff @maxboykoff.bsky.social I research climate change thru several projects; Prof in Environmental Studies and CIRES Fellow at CU Boulder, IPCC AR6 WGIII Contributing Author. Born at 328 ppm. drawings credit: John Cook [big], Cal Brackin [small]
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
Phaedra C. Pezzullo @phaedra.bsky.social Professor @ CU Boulder Environmental & climate justice, sustainability & storytelling, environmental comm. Editor UC Press+ Taylor&Francis. Author: Beyond Straw Men: Plastic Pollution & Networked Cultures of Care. Opinions=mine https://phaedracpezzullo.com
Faith Kearns, Ph.D. @fkearns.bsky.social Scientist and science communicator writing about mostly humans, water, wildfire, climate, and disasters | views=mine
Sheril Kirshenbaum @sheril.bsky.social Science. Policy. Host of PBS Serving Up Science. www.sherilkirshenbaum.com
Larry Hamilton @ichiloe.bsky.social Survey research on public views of science & environment; climate change; human/environment interactions; society in the Arctic. Also walking my dog through the woods, and gazing at the night sky. All graphs & photos are my own unless otherwise cited.
Marney Isaac @marneyisaac.bsky.social University of Toronto professor | Canada Research Chair in Agroecosystems | agroecology, crop diversity, soil fertility, agroforestry, sustainable food systems, urban agriculture
Meghan A. Sharp @meghanasharp.bsky.social (she/her) Made in Canada 🇨🇦
Glaciologist | Geophysicist
Usually skiing, biking, or PhDing @OSUCEOAS
Lorna Harris, PhD @lornaharris.bsky.social Ecosystem Scientist | Artist | Forests, Wetlands, Peatlands, & Climate Change | Carbon, Moss, Lichens, Permafrost, Fire, Tea | Science-Policy | she/her
Independent Researcher and Consultant at www.peatlandfutures.com
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
Yale Program on Climate Change Communication @yaleclimatecomm.bsky.social We conduct research on public climate change knowledge, attitudes, policy support & behavior. Posted events are not endorsements.
https://climatecommunication.yale.edu/
Steven Rodas @stevenrodas.bsky.social Southern California reporter @insideclimatenews.org. Former NJ.com/ The Star Ledger. Syracuse University alum. Tips: steven.rodas@insideclimatenews.org. Bilingual: English | Spanish
https://insideclimatenews.org/profile/steven-rodas/
Mark Rubenstein @mrubenst.bsky.social Toronto based regulatory litigation lawyer / energy law and policy / my work often involves the intersection between administrative law and spreadsheets
Andrew Freedman @afreedma.bsky.social Senior Reporter, Weather & Climate @cnn. Priors: Axios, WaPo | Alum: The Fletcher School, Columbia Climate & Society | Tips: andrew.freedman@cnn.com | afreedman@protonmail.com | Signal: @afreedmanclimate.03
Jacob Corvidae @jcorvidae.bsky.social Energy policy in states. Conflict and facilitation nerd. Sustainability ninja. Music, art, writing too. From Detroit, based in DC. 
Denise Grab @denisegrab.bsky.social Clean Energy Law & Policy at the UCLA Emmett Institute. Formerly at RMI & NYU Policy Integrity. Opinions my own.
dorieseavey@bsky.social @dorieseavey.bsky.social Energy economist focused on clean heating and the future of fossil gas. Senior Research Scientist at Groundwork Data.
Doug Lindner @douglindner.bsky.social Democracy nerd, DC politics guy, public-interest lawyer, Jewish American. Live Free or Die. Views and puns solely my fault; everything else is fedsoc’s fault.
Coyote vs. Everybody / J. Stryker 🍃 @easterncoyote.bsky.social Not the violent artist. | Psychology nerd. DV survivor & victim advocate. Dislikes liars and bullies. | Coyote pedagogy. Good trouble, nature, neuroscience, terrestrial ecology, wildlife, plants, trees. They/them.
Julie Hauserman @jhauserman.bsky.social Writer lady. Fan of #Florida. Reporter for decades. Opinions mine. Check out my book, Drawn to the Deep, biography of a man who swam inside the planet - NatGeo underwater cave explorer Wes Skiles
Covering Climate Now @coveringclimatenow.org #CCNow is a collab of 500+ media outlets creating an all-newsroom approach to covering climate. The climate news & resources you need NOW: tinyurl.com/CCNowNL
Donate to support our work: https://bit.ly/3SMIvUW
Huyen Le @huyentkle.bsky.social Urban transport/health researcher. Assoc Prof @ Ohio State University. Interested in sustainable transportation, environmental exposure, environmental justice, well-being, & coconuts. Personal account.
https://u.osu.edu/huyenle/
Evan George @evanlgeorge.bsky.social Writer, editor, strategist on climate policy & environmental law. Communications Director at the UCLA Emmett Institute. I write The Drain column, a weekly roundup of climate and environmental news.
Andrew Moseman @andrewmoseman.bsky.social Editor, Caltech. Formerly: Popular Mechanics & Discover magazine. Freelancer about EVs, climate, energy, science, tech, you name it.
Alex Wang @greenlawchina.bsky.social Professor of Law @ UCLA School of Law; faculty co-director, Emmett Inst on Climate Change & the Environment; Walter & Shirley Wang Chair in US-China Relations; Chinese law & politics.
alexwang.org
Jaqi Cohen @jaqicohen.bsky.social Climate + transportation policy at @tstc.bsky.social. Advisory board member for @ny4childcare.bsky.social. Opinions and kvetching all my own.
Environmental Data & Governance Initiative @envirodgi.bsky.social EDGI works to build environmental data and governance systems that are more just, equitable, and effective.
Website: envirodatagov.org
Newsletter: https://tinyurl.com/cf3rjd46
Volunteer: https://envirodatagov.org/volunteer/
Maria Antonia Tigre @matigre.bsky.social Director of Climate Change Litigation at the Sabin Center for Climate Change Law at Columbia Law School
Kristin Casper @kristincasper.bsky.social General Counsel for Greenpeace International, fighting to hold polluters accountable and defending our rights to free speech and protest. Celebrating every step toward a greener, more peaceful planet.
Center for International Environmental Law @ciel.org CIEL defends the right to a healthy planet.
#HealthyEnvironmentForAll
Sign up for our newsletters ✒️ http://act.ciel.org/signup
Western Environmental Law Center @westernlaw.org We use the power of the law to foster thriving, resilient Western lands, waters, wildlife, and communities in the face of a changing climate.
Jason Rylander @jasonrylander.bsky.social Legal Director, Climate Law Institute, Center for Biological Diversity. Artist and musician. Dog lover. Posts are my own. 
Connie Cho @conniedotcho.bsky.social Likes climate justice and energy transition rabbit holes • now a research attorney at Stanford • rescue dog mama • Midwest expat in California • views/chaos my own 🌈
Ben Rankin @btrankin.bsky.social Environmental health attorney at the Center for Biological Diversity
Cara Horowitz @carahorowitz.bsky.social Environmental lawyer, mom, California enthusiast with NY roots. Exec Dir of the Emmett Institute on Climate Change and the Environment at UCLA Law School.
Erik Schlenker-Goodrich @riogranderift.bsky.social At work in the ruins.
New Mexican. Executive Director and public interest environmental attorney: @westernlaw.org. Thoughts my own.
Casey Roberts @caseymoto.bsky.social Clean energy and environmental attorney @NRDC. Working for a clean, affordable grid. Texpat. Views expressed are my own.
Frank Sturges @franksturges.bsky.social Mandolin player & environmental lawyer. Most of my favorite trails are portages.