Terrell Jermaine Starr @terrelljstarr.bsky.social Watch my Ukraine reporting at Terrell J Starr Official YouTube and Substack.
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
Mayor Zohran Kwame Mamdani @mayor.nyc.gov Fighting every day to deliver a city that working New Yorkers can actually afford. Mayor of New York City.
Nilo Tabrizy @ntabrizy.bsky.social Visual Forensics at The Washington Post | Writing a book on Iran for Pantheon Books (US) & Atlantic Books (UK) | یاشاسین تبریز
Daniel Swain @weatherwest.bsky.social Weather and climate scientist focused on extreme events like floods, droughts, & wildfires on a warming planet. www.weatherwest.com
Karen Hao @karenhao.bsky.social NYT bestselling author of EMPIRE OF AI: empireofai.com. ai reporter. national magazine award & american humanist media award winner. words in The Atlantic. formerly WSJ, MIT Tech Review, KSJ@MIT. email: http://karendhao.com/contact.
Stand Up for Science! @standupforscience.net We mobilize the fight for science and democracy - because science is for everyone! 🧬🧪🌎
Donate here: https://bit.ly/SUFS_GIVING
Learn more ⬇️
https://linktr.ee/standupforscience_bluesky
Baratunde @baratunde.com host, writer, & speaker exploring interdependence across our relationships with nature, each other, and technology. Latest project is the YouTube podcast "Life With Machines." Other work includes: PBS's America Outdoors, and How To Citizen podcast
Your Local Epidemiologist @ylepidemiologist.bsky.social 👩🏻🔬 Simplifying public health with data-driven insights
💡 Helping you make informed health decisions
🎓 MPH, PhD
👇🏻 Get weekly science-backed updates
https://yourlocalepidemiologist.substack.com/
LeVar Burton @levarburton.bsky.social Kunta, Geordi, Reading Rainbow guy. Flies twice as high… #bydhttmwfi
Jelani Cobb @jelaniya.bsky.social your new neighbor from your old neighborhood. dean. writer. left-hander & occasional photographer. known to frequent the new yorker and columbia journalism school. 
Alberto Alemanno @alemanno.bsky.social Jean Monnet Professor of EU Law, HEC Paris & College of Europe, Bruges
Democracy Fellow, Harvard University & Visiting Scholar, Center for European Studies Minda de Gunzburg at Harvard University
Founder, The Good Lobby
www.albertoalemanno.eu
Amanda Gorman @amandagorman.bsky.social Poet, Activist and Model. Advocate for gender justice, racial equality, and the environment.
https://amandagormanbooks.com/
Robert Reich @rbreich.bsky.social Berkeley professor, former Secretary of Labor. Co-founder of @inequalitymedia.bsky.social and @imcivicaction.bsky.social.
Substack: http://robertreich.substack.com
Buy my new book: https://sites.prh.com/reich
Visit my website: https://rbreich.com/
Chef Jose Andres @chefjoseandres.bsky.social Don’t hate others, just love them….
Rewild Scotland @rewildscotland.bsky.social Alan Hepburn - Teacher, Trustee SCOTLAND: The Big Picture, Scotland's Rewilding Charity and custodian of The Wildwood. Posts on Education, Biodiversity, Ecological Restoration. Views my own. https://www.the-wildwood.org.uk
Dara McAnulty @naturalistdara.bsky.social 20 ~ autistic ~ award winning author of ‘Diary of a Young Naturalist’ and the ‘Wild Child’ series ~ Nature Nerd and biology student ~ University of Cambridge. He/him
📍Co Down / Cambridge
https://daramcanulty.com/
Ben Goldfarb @bengoldfarb.bsky.social Independent conservation journalist writing a book about fish. Author of CROSSINGS, on #roadecology, and EAGER, on beaver belief.
Rewilding Institute @rewilding.org We advance continental-scale conservation that recovers wild species, restores wild landscapes, and fosters coexistence with wild nature. https://bio.site/rewilding
Connie @connievdc.bsky.social Board game designer & designer of Apiary & Wyrmspan. General nerd. Partner of @hexstardragon.bsky.social. Panders to cats. She/Her. Avatar from: https://paavilaisentaide.carrd.co/
Luisa Neubauer @luisaneubauer.bsky.social Climate activist, born 364ppm, based in Berlin
Timothy Garton Ash @fromtga.bsky.social Historian, author, commentator. Author of Homelands: A Personal History of Europe, The File etc. See www.timothygartonash.com
The Europeans @europeanspod.bsky.social An award-winning weekly podcast about Europe hosted by katyinparis.bsky.social and dominicinamsterdam.bsky.social
New episodes every Thursday 🎉
europeanspodcast.com
Gavin Newsom @gavinnewsom.bsky.social Husband and father. 40th Governor of California. Former Lt. Governor of California. Former San Francisco Mayor. Personal account.
Outrage + Optimism, The Climate Podcast @outrageoptimism.bsky.social 🌍 For anyone not ready to give up on a better future.
🎙With Tom Carnac, Paul Dickinson and former UN Chief Christiana Figueres.
⏺ Produced by Persephonica.
The Earthshot Prize @earthshotprize.bsky.social Driving a decade of action for the planet.
Urgency + Optimism = Action.
@jacindaardern.bsky.social @jacindaardern.bsky.social 
Barack Obama @barackobama.bsky.social Dad, husband, President, citizen. barackobamabooks.com
@oucrew.bsky.social @oucrew.bsky.social 
Fintan Burke @fintanburke.com Irish science journalist in Hamburg | Outreach for @esci.eu | President @eusja.org
Sé/é. Big fan of the en-dash.
Signal: fintanburke.01
Liza Gross @lizagross.bsky.social Reporter for Inside Climate News. Focus on ag, oil and gas, conservation, environmental justice. Live and work on unceded Lisjan Ohlone land. (she/her) SEJ, IRE, AHCJ, SPJ NorCal
Michael Bazaco @mcbazacophd.bsky.social Infectious disease epidemiologist in the public sector, EIDs, Outbreaks, Zoonoses,
Virginia Tech and Pitt grad, UMD Public Health adjunct faculty, Smash All Fascism, he/him, Dad, DC adjacent, probably stuck in traffic, the #AllCaps make me cry
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.
Swapna Krishna @swapnakrishna.com space reporter. covering Artemis II for NatGeo.
occasionally: national geographic, engadget, fast company, wired, science friday, npr. links: http://bio.site/skrishna
also: Star Trek, Star Wars, knitting, books, parenting
Maryn McKenna @marynmck.bsky.social Journalist. Contributing Ed, Scientific American. Senior Fellow, Emory Univ Center for the Study of Human Health. Books: BIG CHICKEN, SUPERBUG, BEATING BACK THE DEVIL. Stories: https://authory.com/marynmckenna. Location: points on the 44th parallel.
Illia Ponomarenko @ioponomarenko.bsky.social Live straight out of Bucha 🇺🇦
Pre-order my new book "The Land of Tears and Hope": https://geni.us/tearsandhope
Oceana @oceana.bsky.social Official account of Oceana International. Dedicated to protecting & restoring the world’s oceans on a global scale.
Blue Marine Foundation @bluemarinef.bsky.social Working globally to protect and restore life in the ocean. 🌊
Take action for the ocean with us 👉 https://www.bluemarinefoundation.com/
Surfrider Foundation @surfrider.org 🌊 Protecting Our Ocean, Waves, and Beaches Since 1984
🤝 The Ocean Needs More Friends
🌎 Click Below to Join the Movement! ⤵
https://www.surfrider.org/join
John Scalzi @scalzi.com I enjoy pie.
Social Media FAQ: https://whatever.scalzi.com/2025/04/16/the-official-john-scalzi-social-media-faq/
We Hold These Truths @weholdtruths.bsky.social We Hold These Truths is a national campaign, powered by Democracy Forward, to equip people in America with accurate, accessible facts about their constitutional rights.
UNITED24 @u24.gov.ua The initiative of the President of Ukraine, Volodymyr Zelenskyy
The main platform for collecting charitable donations in support of Ukraine
u24.gov.ua
Toronto Television / Телебачення Торонто @torontoua.bsky.social 🇺🇦 Ukraine's largest independent socio-political (previously satirical) media, providing urgent info on 🇷🇺-🇺🇦 war. All connections with Canada are coincidental.
Gideon Rachman @gideonrachman.bsky.social FT columnist. Also have podcast. Author of three and a half books. Four kids. Two cats. One wife. Numerous friends. Fulham fan.
Pete Buttigieg @petebuttigieg.bsky.social Husband, dad, veteran, writer, and proud Midwesterner. 19th US Secretary of Transportation and former Mayor of South Bend.
UkraineWorld @ukraineworld.bsky.social Ukraine in English: news, analysis, podcasts, videos. Run by Internews Ukraine.
Website: https://ukraineworld.org
Support us: http://patreon.com/ukraineworld
Ukrainska Pravda 🇺🇦 @pravda.ua Official English page of Ukrainian media outlet "Ukrainska Pravda"
https://www.pravda.com.ua/eng/
Katalin Cseh @katalincseh.bsky.social MP of Hungary’s Momentum Movement. Former MEP. MD, MSc in Health Economics. Activist, feminist, idealist. Dog mom x 2
American Birding Association @aba.org American Birding Association (ABA) provides a community, forum, and resources for every birder, bird watcher, and bird enthusiast. Tag this account for lifer posts and we will help celebrate!
Alt US Forest Service @altusfs.altgov.info 📣 Speaking for the trees, and:
🌲 600 million forest acres
💚 193 million acres public land
🥾 164,000 miles of trails
🎣 400,000 miles of streams
🪵 Billions of board feet timber
🚰 Trillions of gallons clean water
🚫Not affiliated with USDA Forest Service
Koahnic Broadcast Corporation #Indigenous #Native Voices @koahnic.bsky.social Koahnic Broadcast Corporation produces and distributes the daily live podcasts Native America Calling, National Native News, Our Living Lands, and INDIGEFI
Hawk Mountain Sanctuary @hawkmountain.bsky.social 
HawkWatch International @hawkwatchint.bsky.social Conserving raptors and our shared environment 🦅
www.hawkwatch.org
Chris Packham @chrisgpackham.bsky.social Broadcaster & environmental campaigner
chrispackh.am/links
Alexandra Witze @alexwitze.bsky.social Science journalist and correspondent for Nature (she/her). Opinions = my own. Reach me at alexwitze.01 (Signal), witzescience (@gmail.com), or awitze (@protonmail.com).
Science Friday @scifri.bsky.social Entertaining & educational conversations about science, tech, + more. Hosted by Ira Flatow and Flora Lichtman. From WNYCStudios.
Robert Macfarlane @robgmacfarlane.bsky.social Books: Is A River Alive? (May ‘25), Underland, The Lost Words, The Old Ways etc | Films: River, Mountain, Upstream | Music: The Moon Also Rises, Lost In The Cedar Wood, etc
Nature, climate, people.
Prof at Cambridge.
https://linktr.ee/robmacfarlane
Scientific American @sciam.bsky.social A legacy of discovery. A future of innovation.
Indivisible Northern AZ ❌👑 @indivisiblenaz.bsky.social Indivisible group based in Flagstaff, AZ. We are a progressive action -oriented community. We will organize to resist MAGA and protect vulnerable people. https://www.indivisiblenaz.com/
Atul Gawande @agawande.bsky.social Surgeon, Writer ("Being Mortal," "Checklist Manifesto"), and formerly led Global Health @USAID.
@sissykotongan.bsky.social @sissykotongan.bsky.social 
KNAU Arizona Public Radio @knauazpubradio.bsky.social KNAU Arizona Public Radio brings NPR news and talk, award-winning local reporting, and great classical music to northern Arizona. knau.org
Julie T @julieofthedesert.bsky.social 
American Astronomical Society (AAS) @aas.org The mission of the American Astronomical Society is to enhance and share humanity’s scientific understanding of the universe as a diverse and inclusive astronomical community.
aas.org
Mark Hamill @markhamillofficial.bsky.social Believe in yourself! Work hard, never give up & anything's possible! OR: Kick back, relax & aim low: You'll never be disappointed...😜
Timothy Snyder @timothysnyder.bsky.social Temerty Professor of Modern European History, Munk School, University of Toronto; Permanent Fellow, IWM Vienna; Emeritus Levin Professor, Yale. Author of "On Freedom," "On Tyranny," "Our Malady," "Road to Unfreedom," "Black Earth," and "Bloodlands"
David Grinspoon @drfunkyspoon.bsky.social Astrobiologist, Author, Musician. 👽🎸❤️🚀
Sagan Medalist, PEN winner, AAAS fellow.
Former Senior Scientist for Astrobiology Strategy at NASA.
There’s an asteroid named after me (22410 Grinspoon) which is better than having one with your name on it…
European Space Agency @esa.int Elevating the future of Europe through space.
Please see our Privacy Notice: https://esa.int/connectwithus
ProfBrianCox @profbriancox.bsky.social Professor of Particle Physics at The University of Manchester and Royal Society Professor for Public Engagement in Science
Michael French @endlesspeaks.bsky.social 
Debbie Leavitt Castleberry @leavittcastled.bsky.social 🤍 Photographer
“Vilde-Hiya”
🌵☀️ Arizona (most of the time)
Pronouns: we 👯
Grand Canyon Wolf Recovery Project @gcwolfrecovery.bsky.social We are dedicated to bringing back wolvesto help restore ecological health in the Grand Canyon Region.
Raincoast Conservation Foundation @raincoast.org Raincoast is a team of scientists and conservationists empowered by our research to safeguard the lands, waters, and wildlife of coastal BC. Find us at www.raincoast.org.
Conor Ryan @whalenerd.bsky.social Here for whale/fungi/sea kayaking/queer 🏳️🌈/marine science chat. 🇮🇪living in🏴
Jonathan C Slaght @jonathanslaght.com Author: Tigers Between Empires (2025). Owls of the Eastern Ice (2020, Best Book per NYT/WSJ, PEN America winner, Nat Book Award longlist). Work: Regional Director Temperate Asia @wcs.org. Home: Mpls https://linktr.ee/jslaght
@jarinet.bsky.social @jarinet.bsky.social 
R Chiolero @aggiesdad.bsky.social ✨It’s the Agatha & Richard Show! ✨
We’re just a guy and his dog daughter making their way through this ridiculous life together. 🤹🏼♂️🎪🦇🐷🥔
(Side cast: wife, mother-in-law, and Agatha’s sister, Sandra) 💍💐🐕
(Setting: Alaska, USA) 🏔️🐻🌲🫎❄️
@robinleslie.bsky.social @robinleslie.bsky.social 
@cindywaddle.bsky.social @cindywaddle.bsky.social 
Peter Wohlleben @peter-wohlleben.bsky.social Förster und Autor (u.a.Das geheime Leben der Bäume)
Knepp Wilding @kneppwilding.bsky.social Rewilding pioneers, working with nature for a sustainable future.
https://knepp.co.uk/
Get our latest news: https://knepp.co.uk/newsletter-signup/
Elle Cordova @ellecordova.bsky.social A nerd at large. Writer of stuff.
Join my sci-fi book club:
http://patreon.com/ellecordova
nerd humor • space & sci fi • books
BBC Gardeners' World Mag @gardenersworldmag.bsky.social Leafy updates from BBC Gardeners' World Magazine and www.gardenersworld.com 🌿
@vflowers.bsky.social @vflowers.bsky.social I
@ravimalhotra.bsky.social @ravimalhotra.bsky.social Disability Law Scholar. Posts are not legal advice.
William Kurmes @kurmesvet.bsky.social Veterinarian, science based, hiking, dogs, food, family.
Zoë Schlanger @zoeschlanger.bsky.social Reporter covering chemicals, climate, cool plants. Author of THE LIGHT EATERS, a plant book, out from Harper Books. I'm zoeschlanger.99 on Signal
Janet Hill @saskajanet.bsky.social Welcome to the prairies! In my day job I'm a microbiology prof @hilllabsask.bsky.social. Weekends are for the birds (literally).
🇨🇦 Citizen scientist in Saskatoon, Saskatchewan. Volunteer for birds. Photos by me.
Melissa Sevigny @melissasevigny.bsky.social Science journalist in Flagstaff, Arizona. Author of Brave the Wild River (WW Norton, 2023), Mythical River, and Under Desert Skies. I write about science, nature, rivers, space. Trekkie! www.melissasevigny.com
Phil Plait @philplait.bsky.social Bad Astronomer (formerly @BadAstronomer), SciCommer, Dork. Crash Course Astronomy guy. He/him. Newsletter: badastronomy.beehiiv.com
I'm self-employed so my opinions do in fact represent my company's.
Pride in STEM @prideinstem.bsky.social Award-nominated Charity showcasing/supporting LGBTQIA+ people in Science, Technology, Engineering & Maths. Skeets by @DrCarpineti.bsky.social
🏳️🌈🏳️⚧️
Josh Luke Davis 🏳️🌈 @joshlukedavis.com Science writer, editor and author | Queer animals, birds and embroidery | he/him | ✏️🌱🦦 | joshlukedavis.com
NPR @npr.org This is NPR 🎙️
The Planetary Society @planetarysociety.bsky.social A space advocacy nonprofit founded in 1980 by Carl Sagan, Bruce Murray, and Louis Friedman, now led by Bill Nye.
Find your place in space.
Become a member today: https://www.planetary.org/
Lucy Lapwing @lucylapwing.bsky.social 🍄 Naturalist, wildlife weirdo. Fungus-poker, bug-ogler.
💚Fighting for a world with more WILD in it 👊🏻
🪶RSPB & WWT Ambassador
Christine Figgener, PhD @seaturtlebiologist.bsky.social 🇩🇪 Marine Biologist 📍🇨🇷
🌊🐢 Saving #seaturtles & fighting #plasticpollution
🥤aka 'Sea-Turtle-Straw-Lady'
🌿Founder COASTS
World Central Kitchen @wck.org WCK immediately prepares & serves fresh, nourishing meals to communities impacted by natural disasters and during humanitarian crises. #ChefsForTheWorld
Learn more: linktr.ee/wckitchen
Kate Bradbury @katebradbury.bsky.social Garden/Nature writer/presenter 🏳️🌈 @Froglifers and @BumblebeeTrust patron. @savebutterflies and @the_RHS
ambassador. Agent @DFMTalent. Born at 342.54ppm
Trees for Life @treesforlife.bsky.social Rewilding the Scottish Highlands. Hopeful and bold, we are committed to creating nature-rich landscapes that include and support people.
See rewilding in action @visitdundreggan.bsky.social