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).
Glen Peters @glenpeters.bsky.social Energy, emissions, & climate
CICERO Center for International Climate Research, Oslo, Norway
https://cicero.oslo.no/en/employees/glen-peters
Danny Cullenward @ghgpolicy.org Forensic climate economist and lawyer • The carbon accounting canary in your climate policy coal mine • https://ghgpolicy.org
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 🔌⚡️
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
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.
Scott 🥐🐟📈🦆🏈 @fishecon.bsky.social Oceans economist. U of Oregon PhD and college football addict. Posts are my own. Miami.
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
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.
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/
Stephanie @blooming-burbs.bsky.social Michigander, Environmental Health Educator especially climate change adaptation, PhD community food systems. Side gig: suburban flower farming, growing native plants, & troubling suburbia at https://www.blooming-burbs.com/. She/her. Growing in zone 6A.
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
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.
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
Parke Wilde @parkewilde.bsky.social Food policy research and demand-side climate innovation.
https://nutrition.tufts.edu/academics/faculty/parke-wilde
flyingless.org
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
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
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
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
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- 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 (Food Studies Masters student at University of Exeter), 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
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
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
Dave Levitan @davelevitan.bsky.social Science journalist, bylines all over the place.
Book: NOT A SCIENTIST: How politicians mistake, misrepresent, and utterly mangle science (WW Norton).
www.davelevitan.com
Sign up: www.gravityisgone.com
molly taft @mollytaft.com disaster dyke on the apocalypse beat @wired.com . very tall with a very short dog. they/them. molly_taft@wired.com, signal: @mollytaft.99. mollytaft.com
Emily Atkin @emorwee.bsky.social I run HEATED, a weekly newsletter and podcast devoted to climate accountability reporting and opinion. Philly-based. She/her.
Signal: @emorwee.06
Dr. Elizabeth Sawin @bethsawin.bsky.social Director Multisolving Institute. She/her. Systems thinking, climate justice, and multisolving, with a sprinkle of gardens and the odd puns. @bethsawin on X
Eric Roston @eroston.bsky.social Butterflies and zebras and moonbeams and fairy tales. Literally wrote the book on carbon. Born 326.17. He/him. "Bleakly amusing." —A. Martine.
"The dad jokes will continue until morale improves." —Charlie Jane Anders.
Signal: eroston.87
Bloomberg Green
Dave Vetter @davidrvetter.bsky.social Climate and sustainability writing and communications; duck monitor.
Julia Simon @juliaradio.bsky.social NPR's Energy and Climate Solutions Correspondent
SF by way of Nigeria, Indonesia, and Egypt • 🇳🇬🇮🇩🇪🇬
For tips my Signal juliaradio.33
Virginia Gewin @virginiagewin.bsky.social PDX-based science journalist writing about climate change, food security, land use, biodiversity loss, and diversity in STEM she/her
Signal: ginnyg.04
Stories here: www.virginiagewin.com
Kevin J. Kircher @kevinjkircher.com Engineering prof (mechanical + electrical) at a big Midwest state school. Energy, climate, buildings, power grid, control, optimization, data science. He/him. Personal account. https://kevinjkircher.com/ Email: my last name at purdue dot edu
Meg RW @hedgewitch.bsky.social Mommy
Community Organizer - Climate, Abolition, Housing, Unions in Southern Ontario.
Very sweary.
Plants!
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
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
Erin 🌱 @wearegonnafindout.bsky.social Native plants (7b/65n Chesapeake rolling coastal plain)
Decarbonization, cats, oddments
Working on reducing pollution from buildings at a big nonprofit; speaking for myself here
She/they
Yadvinder Malhi @ymalhi.bsky.social Prof of Ecosystem Science at Oxford, working on #naturerecovery, especially loves tropical ecosystems; Director Leverhulme Centre for @NatureRecovery.bsky.social; Trustee @nhm-london@bsky.social; ex-President of @BritishEcolSoc.bsky.social ; CBE FRS
Teresa Robeson @teresarobeson.com Author/Artist * Asian Pacific American Librarians Association PB winner * Writes kid lit, diversity, & science * 🇭🇰🇨🇦🇺🇸 * she/her * SO: @indianaclimate * sign up for my newsletter at teresarobeson.com and get free art + story * 🚫 DMs or MAGA
David Weiskopf believes in you @dave.bzky.team If a box on a curb with "Free Meyer Lemons" written on it were a guy
(personal account, obviously)
Olúfẹ́mi O. Táíwò @olufemiotaiwo.bsky.social DC. political philosopher at Georgetown, editor at @hammerandhope.bsky.social, rhythm guitarist + vox for @femiandfoundation.bsky.social. #COYS
David Ho @davidho.bsky.social Climate scientist; ocean carbon cycle and climate solutions. Professor @soest.hawaii.edu, University of Hawaiʻi at Mānoa; Visiting Faculty, Arizona State University. https://linktr.ee/david_ho
ashley fairbanks @ziibiing.com asiniiwiikwe indizhinikaaz. anishinaabekwe in yanaguana. storyteller, comms nerd, & artist trying to shift power and build a just and sustainable world. fuck borders. land back. she/her/wiin.
c0nc0rdance @c0nc0rdance.bsky.social Molecular biologist from Texas, here to share my meanderings on nature, science, history, politics, and zombies. Long threads a specialty.
Kelly Hereid @kellyhereid.bsky.social Climate scientist, geologist, and catastrophe modeler, Liberty Mutual. Posts on all things hurricane, wildfire, flood, earthquake, tornado. Sassy takes are mine not employer's.
📍Oakland, CA
Website: hereidk.strikingly.com
Gernot Wagner @gwagner.com Climate economist, Columbia
https://gwagner.com
It's pronounced "juggernaut" without the "jug"
isaac @sevier.io Posting about electricity and how we can care for one other. Building @publicgrids.org. SF. they.
Latest: “Why public power campaigns win"
https://www.isaacsevier.com/notes/public-power-san-francisco-new-york-shrestha-mamdani-organize/
MaskedWannabeFarmer @maskedfarmer.bsky.social 👨👩👦👦☕️🚜💻📚🌾🧬👨🌾🥜🌻💚🏃♂️🧀🇪🇺🥋🧘♀️ (not always this order) | born @338ppm | no active farmer 😕| Posts in 🇩🇪 and 🇬🇧| #noafd #unitedbehindthescience | mutes sports, gaming, anime
Ilis Trudie 🏝 @ilistrudiepalmer.bsky.social Internationally recognized author 🌍 |5 books 📚
Link to Woke to Joy (2025):
https://booklocker.com/books/13843.html
| Founder of #The_Eco_Spiritual_Experience 🌱 🧑🏿🌾🇰🇳
|Regenerating soil, story & joy ✨
Dana R. Fisher (aka the Apocalyptic Optimist) @fisherdanar.bsky.social Director, Center for Environment Community, & Equity and Professor, AU | NonRes Sr Fellow, Brookings | IPCCWG3 AR6 | www.danarfisher.com | TED Talk on being an Apocalyptic Optimist : go.ted.com/danarfisher
Ian @ianlivingston.bsky.social Writer. Reporter. Listener. Forecaster. Editor. Former Brookings foreign policy and WaPo weather/climate. #wx #dc #dogs #climatechange #policy #military #python #gis
capitalweather.com
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.
J. Mijin Cha @jmijin.bsky.social Assist prof, env studies; Fellow, Climate Jobs Institute and @cplusc.bsky.social; Board, Greenpeace Fund; just transition; labor/climate. 🍉 #COYS 🇰🇷🇺🇸
📚: https://mitpress.mit.edu/9780262550796/a-just-transition-for-all/
https://mijincha.com
Francisco Blaha @franciscoblaha.bsky.social “We have two choices: to abandon hope and ensure that the worst will happen, or to use the opportunities that exist and contribute to a better world. It is not a very difficult choice.”
Fisheries, science, 🌊 🏊🏼♂️ , 🏄🏽♂️, 🚲 & Dub
http://www.franciscoblaha.info
Ariel Greenwood @arielgreenwood.bsky.social Ranching in the New Mexico high country & trying to thread the needle of stewardship and cows on 200 square miles of leased land
grassnomads.com
Eoghan Daltun 🌍 @irishrainforest.bsky.social Author of award-winning bestseller An Irish Atlantic Rainforest. Over 17 years rewilding our 73-acre farm on the Beara Peninsula, West Cork. In love with Earth's biosphere.
🐧 🏔️ @ilikehikes.bsky.social We deserve a safe and free future
Dr Grace S Peng @gspeng.bsky.social Same interdisciplinary scientist as on the other sites with the same handle. Chemistry, math, physics, meteorology, GIS, data whisperer.
Natural resources director, League of Women Voters of Los Angeles Co. She/Her
https://badmomgoodmom.blogspot.com/