Chris Hayes @chrislhayes.bsky.social Bronx boy. Cubs fan. Dad, husband, writer, podcaster and cable news host.
The Sirens’ Call: How Attention Became the World’s Most Endangered Resource out now.
https://sirenscallbook.com/
U.S. Representative Al Green @algreen.house.gov Proud to represent the Ninth Congressional District of Texas in the U.S. House of Representatives. 
oSTEM, Inc @ostem.org Out in Science, Technology, Engineering, and Mathematics
A 501(c)(3) non-profit professional association for LGBTQ+ people in the STEM community with over 150 chapters in the US and abroad
ostem.org
Pete Buttigieg @petebuttigieg.bsky.social Husband, dad, veteran, writer, and proud Midwesterner. 19th US Secretary of Transportation and former Mayor of South Bend.
Tara Tiger Brown, PhD 🌲💚 @taratigerbrown.bsky.social Nature + Health Researcher studying how natural environments support stress regulation, social connection, and meaning. Created Sit Spot Club and Silent Trails.
Federation of American Scientists @scientistsorg.bsky.social Striving for a safer world since 1945
science policy | nuclear weapons | clean energy | STEM education | artificial intelligence | data privacy | much much more
Matt Korda @mattkorda.bsky.social I count nukes for the Federation of American Scientists + the Stockholm International Peace Research Institute. 🇨🇦 Views my own.
Hans Kristensen @nukestrat.bsky.social Director, Nuclear Information Project, Federation of American Scientists. Tracking nuclear arsenals, co-author of Nuclear Notebook, SIPRI Yearbook. Opinions my own.
Website: https://fas.org/initiative/nuclear-information-project/
Katie McCaskey @katiemccaskey.bsky.social Media & PR 🧪 FΔS - Federation of American Scientists (fas.org) - views all mine ❤️ emerging tech/innovation, active transportation, built/natural environment
kate k @kathrwn.bsky.social design + social + editorial at @scientistsorg.bsky.social | views my own | once and future jeopardy champion
Eliana Johns @elianajjohns.bsky.social PhD Student @ University of Maryland & Research Advisor with Nuclear Information Project @ Federation of American Scientists | Talks about nukes and satellite imagery (views are my own)
Mackenzie Knight-Boyle @mknight.bsky.social Research and Project Manager @ Federation of American Scientists - Nuclear Information Project
Mother to a demonic chihuahua named Pippin 🐾
Views are my own
Jon B. Wolfsthal @jonatomic.bsky.social Nuclear Fellow @ Pax Sapiens, former Bulletin of Atomic Scientists and State Department International Sec Advisory Board, CNAS Sr. Fellow, former National Security Council. No #manels, Yankees/Gunners.
Daniel Robinson @quietflosthedan.bsky.social Global affairs watcher. Fundraiser. Go go lover. DC native
James Campbell @jamescampbell.bsky.social Fighting fire with (wild)fire (policy) |
DC | obligatory opinions are my own section
Leya @leyamohsin.bsky.social making policy more evidence-based @scientistsorg.bsky.social | alum of @arnoldventures.bsky.social + @teachforamerica.bsky.social
views are my own
Irene Ngun @ireneone.bsky.social AD Policy Entrepreneurship. Previous lives: Urban Institute Education Data & Policy Center; National Academies Higher Ed & Workforce
Ollie Stephenson @technolliegist.bsky.social Associate Director of AI and Emerging Technology Policy, @scientistsorg.bsky.social. Views are my own.
Allie Maloney @alliemaloney.bsky.social Scoville Fellow at Federation of American Scientists
Christine Sawyer @christinesawyer.bsky.social Educator with a passion for STEM
Working to remove barriers to STEM for families & students | Broadway Lover | ❤️ Disney | Swiftie | She/Her #EduSky
Creator of @stemwithmrssawyer.bsky.social
David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social I am a marine conservation biologist studying sharks and a science writer. Posts are about science and the environment, science communication, and more! He/him
Ketan Joshi @ketanjoshi.co Hey, I'm a climate and energy writer / data analyst who focuses on corporate + govt accountability
Creator + curator of the Greensky feed: https://ketanjoshi.co/greensky/
Based in Oslo but write about US, Europe, Aus too - ketan.joshi85@gmail.com
Kendra "Gloom is My Beat" Pierre-Louis @kendrawrites.com Climate journalist based in NYC. Only speaking for myself. If the NYT has no haters I'm dead.
Tips? Reach me on Signal kendrawrites.04
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).
Hannah Ritchie @hannahritchie.bsky.social Deputy Editor, Our World in Data
Senior Researcher, University of Oxford
Climate, energy, environment, all things data.
Glen Peters @glenpeters.bsky.social Energy, emissions, & climate
CICERO Center for International Climate Research, Oslo, Norway
https://cicero.oslo.no/en/employees/glen-peters
Lissa Harris 🌈🗑️🔥⚔️🐀 @lissaharris.bsky.social COP is stored in the ovaries
pompe à chaleur. recovering local digital news reporter. rural volunteer firefighter. Gideon the Sixth. your favorite deep state climate bureaucrat’s favorite shitposter
she/her/bro 🔌⚡️
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
Tamar Haspel @tamarhaspel.bsky.social James Beard winning WaPo columnist writing about food & science, author of TO BOLDLY GROW, gentleman oyster farmer. 
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.
Kimberly Nicholas @kimberlynicholas.bsky.social Climate scientist, Lund University.
Creator, climate action
podcast 🎙️ CLIMATE ACTUALLY https://youtube.com/@climateactually
& guide📱 SHIFT (jointheshift.earth).
Bestselling author, UNDER THE SKY WE MAKE 📖.
Newsletter: wecanfixit.substack.com 💌.
Sheril Kirshenbaum @sheril.bsky.social Science. Policy. Host of PBS Serving Up Science. www.sherilkirshenbaum.com
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)!
Hisham Zerriffi @hishamzerriffi.bsky.social Energy Resources, Development and Environment Lab (ERDELab) PI. Energy, equity, justice, climate change, bioenergy. But also TTRPGs and photography (https://pixelfed.social/i/web/profile/499807930552574625). he/him.
Marci Baranski @ecomarci.bsky.social 💡 Independent consultant.
📖 Author of The Globalization of Wheat: A Critical History of the Green Revolution
🌿 Ex-UNEP, ex-USDA
📌 DC
Ariel Ortiz-Bobea @arielob.bsky.social Applied econ & policy prof at Cornell. Researching how people cope w/ environmental change. Posts about climate, agriculture, environment & academia.
https://arielortizbobea.github.io
Mike Murphy @mjamurphy.bsky.social I'm an applied economist interested in how we get better at interacting with natural systems. You can find out more about my research at mjamurphy.com
Personal account, only Scottish football takes guaranteed correct
Michael Grunwald @mikegrunwald.bsky.social Author of WE ARE EATING THE EARTH https://www.amazon.com/We-Are-Eating-Earth-Climate/dp/1982160071 & THE SWAMP https://www.amazon.com/Swamp-Everglades-Florida-Politics-Paradise/dp/0743251075/ NYT contributor. Annoyed Floridian. michaelgrunwaldbooks.com
Jenny Splitter @jennysplitter.bsky.social Editor-in-Chief of @sentientmedia.org, the only nonprofit, nonpartisan news outlet reporting on factory farms and alternatives to the status quo. Tips to sentientmediatips@proton.me
Camille Perrin @perrincam.bsky.social 🍎 #FoodPolicy nerd with a keen interest in #European politics.
Working at Fern (@fern.org) during daytime.
Previously @eufpc.bsky.social @beuc.eu
#Diets #FoodSystems #Agriculture
🇫🇷 living in 🇧🇪
Posts in FR and EN.
*Views are mine* (she/her)
Scott Robeson @indianaclimate.bsky.social Climatologist, statistician, and geographer | #FirstGen | UDel and UBC grad | Grower of food and lover of plants and birds | Partner of https://bsky.app/profile/teresarobeson.com
Dr. Katharine Dickson @metaomicsnerd.bsky.social Microbiome science by training; climate policy by calling.
Professional anti-methanogen crusader.
I 分かる some 日本語.
Opinions my own. She/her. 🇺🇸. ☸️ (Jōdo Shinshū).
Owner of @cowburpsbot.bsky.social
Portfolio: https://tinyurl.com/katharinedickson
Trevor A. Branch @trevorabranch.bsky.social Professor at Univ of Washington @uwsafs.bsky.social I run models and synthesize data, love R graphics, and do research on the status of marine fisheries, fishing quotas, and blue whales @bluewhalenews.bsky.social
Cliff Hutt 🐟🦈 🥄 @cliffordthehutt.bsky.social Fisheries conservation is my gig. It will probably be the least of what I discuss here. All opinions expressed here are my own.
Bora Chang, MPH @climatechang.bsky.social communications/climate/environment; views my own
Jess Fanzo @jessfanzo.bsky.social The James Anderson Professor of Food Policy and Climate at Johns Hopkins University's School of Advanced International Studies (SAIS) in Bologna, Italy. Lover of goats, food + drink. Curator of thefoodarchive.com
Tiff Stephens @drkelp.bsky.social Research Professional w/ the University of Alaska Fairbanks & freelance consultant. Aquaculture, ecophysiology, and a lot of seaweed. 🌿🌊
Living and exploring in Lingít Aaní, Haida, and Tsimshian traditional lands in Southeast Alaska.
Halley E. Froehlich @dochfroehlich.bsky.social Mom. University of Helsinki, Finland Full Professor studying aquaculture, fisheries, and climate change.
Jan Dutkiewicz @jandutkiewicz.bsky.social Assistant Professor of Political Science at the Pratt Institute
Contributing Editor at The New Republic
Feed the People! (Basic Books 2026)
www.jandutkiewicz.com
Helena Bottemiller Evich @hbottemiller.bsky.social I write a must-read newsletter on all things food policy - for consumers and insiders alike. Get on the list: foodfix.co
Dr Michelle Cain @civiltalker.bsky.social climate scientist by day. culture consumer by night. bowie fan at all times. my brain hurts like a warehouse, it has no room to spare (she/her)
Jessica Gephart @jagephart.bsky.social Asst Prof at University of Washington SAFS
Globalization of aquatic food systems & sustainable seafood
Lab website: http://seafood-globalization-lab.weebly.com/
ARTIS website: https://artisdata.weebly.com/
Pete Scarborough @petescarbs.bsky.social Professor of Population Health | University of Oxford | Sustainable Healthy Diets & Transformers
Alexander J. Stein @ajstein.bsky.social Agricultural economist, PhD. Curating and sharing research and evidence-based information on food, health, technology & sustainability. More about me: www.AJStein.de. Moderated private account. Posts + Likes ≠ endorsements. German: ajstein-de.bsky.social
Emily Cassidy @enviroem.bsky.social Environmental scientist 🌏 focused on food and land use. Washington, DC area. @projectdrawdown.bsky.social, previously NASA, World Resources Institute, UMN. Opinions my own.
https://emilyscassidy.github.io/
Tom Finch @tfinch.bsky.social Birds, science, climate, hills. Dad. RSPB Conservation Scientist. Views here are my own. Sorry for not getting back to you sooner.
Kenny Torrella @kennytorrella.bsky.social Writing about factory farming and the future of meat at Vox. 
Olivier Honnay @olivierhonnay.bsky.social Conservation biology | Agronomic ecology | Trade-offs | Professor KU Leuven | KU Leuven Plant Institute | Non-utopian
https://bio.kuleuven.be/faculty/00012061
Rivka Fidel, PhD @rivkafidel.bsky.social Career track professor teaching #soil and #environmental science in Tucson, Arizona. 🌵
#biochar #biogeochemistry #soilchemistry
Unapologetic feminist scientist 👩🔬 and ally 🌈
Opinions my own
Dr. Helena Wright @hwright.bsky.social Executive Director, Climate Policy Monitor. Interested in climate, food, oceans, bees & saving the planet. New mum. Views my own.
Henk Renting @henkrenting.bsky.social Netherlands, Teacher, Researcher, Food Systems, Food Policy, Urban Agriculture, Agroecology, Nature, Colombia, Pais Vasco, España, Twitter-refugee
Agnes Quisumbing @agnesq.bsky.social Senior Research Fellow, International Food Policy Research Institute; proud Pinay working for gender equality; crazy about turtles
Evan Walker @ecologicalev.bsky.social Environmental conservation & sustainability at WWF 🐼. Enjoyer of books, music, movies, and skateboarding, often in Ohio
Peter Edwards @peterericthor.bsky.social Jamaican born and bred, now D.C. area based Marine Scientist, Environmental Economist, Policy Wonk. University of the West Indies (BSc, MPhil); University of Delaware (PhD) Views dem ah fi mi own #TempusFugit [@ericthoreddie on 🧵]
Matthew Hayek @matthewhayek.bsky.social NYU Associate Professor of Environmental Studies. Climate, animals, land use, and food systems. MatthewHayek.com
Nicholas D Carter @nicholasdcarter.bsky.social 🌳 Director of Environmental Science at Game Changers 2.
🌎 Research Fellow at Project Drawdown: climate solutions focused on food, agriculture & land.
🌱 Co-founder of iffs.earth
Dan Charles @dancharles.bsky.social Telling stories about climate, food, land. Former NPR. Urbanist and ruralist and bicyclist. Science Magazine contributor.
Parke Wilde @parkewilde.bsky.social Food policy research and demand-side climate innovation.
https://nutrition.tufts.edu/academics/faculty/parke-wilde
flyingless.org
(E) Melanie DuPuis @emelaniedupuis.bsky.social Author, Nature’s Perfect Food, Dangerous Digestion. Co-author, Alternative Food Networks. And other pubs on food, air, agriculture, and climate transitions.
Michael Tlusty @tlustym.bsky.social Prof of sustainability and food solutions. Type 1 diabetic. Focused on stopping illegal wildlife trade. 
Christina Hicks @christinahicks.bsky.social Professor. Environmental social scientist at Lancaster Environment Centre. Trying to return to a fell runner
Andrew McGuire @agronomistag.bsky.social Views of an agronomist on soil, farming, and science. Evidence-based agriculture. Washington State University Extension. https://t.co/RZ11P3ozYm
Same @ on X.
Ricardo J. Salvador @cadwego.bsky.social Free-living, aerobic, cursorial heterotroph.
Running fixes everything: your diet, health, and attitude.
Marathons, books, music, coffee, computers, justice.
“O Tierra del Sol, suspiro por verte.”
Lionel Dabbadie @dabbadie.bsky.social FAO Representative posting about the Philippines, fisheries and aquaculture Re-Post or link sharing ≠ endorsement
Garrett Broad @garrettbroad.bsky.social Faculty at Rowan University. Researcher & teacher focused on food systems/sustainability, media/technology, public opinion/social movements, animals/alternative proteins. Philly/South Jersey guy. Soft pretzel aficionado. Opinions mine.
garrettbroad.com
Andrew Kniss @wyoweeds.bsky.social I kill things for science (mostly plants). I study crops, weeds, and sometimes other things at a University in Wyoming (but this is a personal account). I like taking photos and writing #Rstats code, but not at the same time.
PlantOutOfPlace.com
R e a n a K @reana.bsky.social Farmer & Herbalist in NM
Owner, Black Rabbit Farm Apothecary
Founder, Share a Seed
U S D A #altgov #altfam
🥖🌹
I'm a witch, and I'm hunting you.
www.blackrabbitfarmapothecary.com
Dan Blaustein-Rejto @danbr.bsky.social Researching sustainable food & agriculture at Breakthrough Institute. Sustainable food future = lower-carbon livestock, plant-based and cultivated meat, biotech / GMOs, intensive and industrial production. thebreakthrough.org/people/dan-blaustein-rejto
Anne Schechinger @anneschech.bsky.social Data, agriculture, food, CAFOs, sustainability, climate change, water, policy. Former Michigander and Iowan, current Minnesotan. Views are my own. 
Fred Iutzi @frediutzi.bsky.social Perennial advocate for agriculture, climate, & communities. Eighth generation Illinoisan. Helping lay the groundwork for widespread agroforestry as Senior Director of Strategy at the Savanna Institute - savannainstitute.org.
Bloomington, Illinois, USA.
David L. Ortega @dlortega.bsky.social Food Economist | Professor and Noel W. Stuckman Chair in Food Economics and Policy at Michigan State University | Venezuelan 🇻🇪
Andrew Thorne-Lyman @andrewtl.bsky.social Associate Professor at Johns Hopkins Bloomberg School of Public Health @livablefuture and Center for Human Nutrition | Seafood and public health | Nutrition Epidemiology | Growing veggies | Pomona College '95, #1 Sagehen fan on Bluesky
Linus Blomqvist @linusblomqvist.com PhD student at the Bren School at UC Santa Barbara, former Director of Food & Agriculture and Conservation programs at the Breakthrough Institute. Land use/conservation/agriculture. Birder. www.linusblomqvist.com.
Chris Gee / ◣ ◢ \ @chrisgeeuk.bsky.social Human, enjoys debate, 🤘 rock gigs, humour, 🏊♂️, ⛷️, 🤿, 🍴 & 🐺 FC.
Citizen of 🌎, 🇮🇪, 🇪🇺 & 🇬🇧. Work @Oakfnd. Trying to learn French. Les vues ici sont les miennes. Mostly in Geneva & Twickenham
Baptiste Malaguti @bptstmlgt.bsky.social Founder & iOS developer @ Kuri, the climate-friendly cooking app
My mission is to make people eat more plants.
Silvia Secchi @profsecchi.bsky.social Natural resource economist, geographer, meanderer, informed agitator, immigrant
Trans rights are human rights
Landback
💧Dall’acqua salata a quella dolce e zozza💧
Personal account - these are my views, not my employer’s
James Temple @jtemple.bsky.social Climate and energy editor, Reno bureau chief, MIT Technology Review. Ski bum. Dog dad.
Please send tips (not PR pitches) through Signal: jtemple.99
Robert Finger @robertfinger.bsky.social Professor of Agricultural Economics and Policy at ETH Zürich.
Website https://sites.google.com/view/fingerrobert/home
Google Scholar https://scholar.google.ca/citations?user=V7yA_rcAAAAJ&hl=en
Erle Ellis @erleellis.bsky.social Exploring the ecology of an increasingly human planet.
Prof. Geography & Environmental Systems, UMBC
Anthromes, Anthroecology & Anthropocene
https://anthroecology.org/people/ellis/- G g.na @gina.bzky.team Offline until locked accounts and/or “remove follower” are user options.
Costa Samaras @costasamaras.com Climate, energy, emerging tech, resilience, & policy professor. Carnegie Mellon Univ. Institute for Energy Innovation Director. Former Biden-Harris White House OSTP Chief Advisor for the Clean Energy Transition. Personal account. He/Him. costasamaras.com
Nathan Nelson @nathannelson.co.uk Devon-dwelling biophiliac. Dog dad. Food systems, farming and agroecology, trees, nature connection, cack-handed gardening, movies. Solvitur ambulando.
Tom Kimmerer, PhD @tomkimmerer.bsky.social I am a tree scientist and botanist writing about relationships between trees and humans including climate change. A Fulbright Scholar, Author of Venerable Trees and more books in progress. Read about trees here: https://ourtrees.substack.com.
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
Andy Reisinger @andyreisinger.bsky.social Climate science and policy. Also the occasional photo and random thoughts. Lead author IPCC AR7 WGIII (mitigation). Usual disclaimers...
Nathan Mueller @muellern.bsky.social Associate Professor @ Colorado State University // Agricultural Sustainability and Climate Impacts Lab // EiC @ Environmental Research: Food Systems // Personal account // ascilab.colostate.edu
Ed Carr @edwardrcarr.com US Center Director and Senior Scientist, Stockholm Environment Institute | Interim Chair, STAP/GEF | CLA IPBES Transformative Change Assessment | LA IPCC AR6 WGII | Masters T&F All-American | Hopelessly realistic optimist
www.edwardrcarr.com
Walter Pierce @wpierce.bsky.social I raise children and farm animals, love cooking and gardening, write code to pay the bills, & play music in my limited free time. He/Him/His.
Banner: 5 guitars on a black couch
Profile: white dude, salt & pepper beard, blue shirt, faded green hat
Robinson Meyer @robinsonmeyer.bsky.social I’m the founding executive editor of Heatmap News, a contributing Opinion writer for The New York Times, and the cohost of the Shift Key podcast.
📍NYC