Karen K. Ho @karenho.bsky.social Writer, reporter, and floofy dog owner. Previously at ARTnews, Business Insider, Quartz and other outlets. Based in Toronto.
Derek Lowe @dereklowe.bsky.social Medicinal chemist / chemical biologist, author of “In the Pipeline” at http://science.org/blogs/pipeline. derekb.lowe@gmail.com and on Signal at Dblowe.18
All opinions are mine; I don’t speak for my employer in any way.
Mrs. Betty Bowers @mrsbettybowers.bsky.social I am America’s Best Christian™. But you knew that. You can find exclusive content here: https://www.patreon.com/c/MrsBettyBowers
TITHE: https://www.paypal.com/donate/?hosted_button_id=Q6REDKBBVUJLU
Berkeley Earth @berkeleyearth.org We're an independent 501c3 non-profit organization working to make climate data open and accessible.
📍Berkeley, CA
＠ www.berkeleyearth.org
💲donate.berkeleyearth.org
Crash Course @thecrashcourse.bsky.social At Crash Course, we believe that high-quality educational videos should be available to everyone for free! 
Damian Carrington @dpcarrington.bsky.social Environment editor at The Guardian
Send info confidentially via Signal: dpcarrington.35
Or via this link👇
https://www.theguardian.com/tips
Dawn Gelino @dawngelino.bsky.social Manager for NASA’s Exoplanet Exploration Program, AAS VP, NHFP lead, Mom
Former Deputy Director NASA Exoplanet Science Institute
Zen Faulkes @doctorzen.net Biologist. Better Posters book and blog. Academic hoaxes. Academic slop graphics. Home: http://DoctorZen.net. ORCID: https://orcid.org/0000-0003-4049-7034
Ben Tarnoff @bentarnoff.com my latest book is MUSKISM, co-authored with Quinn Slobodian: https://bookshop.org/p/books/muskism-a-guide-for-the-perplexed-ben-tarnoff/3d177fb9349a79ff
Ben McKenzie @benmckenzie.bsky.social PRE-ORDER TO STREAM NOW: Everyoneislying.com/watch
Semble @semble.so Social knowledge network for your research trails by @cosmik.network
🌐 https://semble.so/
Dave Klassen @drklassen.bsky.social Mars clouds scientist, physics and astronomy prof; Episcopal lay minister; genealogy, RPG, LotR, comics; he or they pronouns
Meghan Bartels @meghanbartels.bsky.social Science journalist (for hire!). Book person, cat person, Georgetown alumna, etc. In NYC. Signal: mbartels.07. she/her http://meghanbartels.github.io/portfolio/
Climate.us @climate.us We are an independent, nonprofit successor to Climate(.)gov, safeguarding public access to trusted climate data, tools, and information.
Donate: https://givebutter.com/climate-for-us-protected-by-you
Jeff Sharlet @jeffsharlet.bsky.social Bestselling author of THE UNDERTOW: Scenes from a Slow Civil War; THE FAMILY, also a Netflix series; C Street; THIS BRILLIANT DARKNESS; & SWEET HEAVEN WHEN I DIE. AI stole them all. Professing @ Dartmouth. That's not my cat.
Your Rich BFF @yourrichbff.bsky.social 💵 Wall Street Trader turned Finance Creator 📱Now helping YOU get RICH! 🗞 Featured in Forbes, Bloomberg, YahooFinance, CNBC, NASDAQ
Nicola Ulibarri @ulibarri.bsky.social Associate professor at UC Irvine. Nuevo mexicana. Environmental policy & management, water, climate, collaborative governance, and diversifying academia. https://faculty.sites.uci.edu/ulibarri/
Debra Wunch @dwunch.bsky.social atmospheric scientist
Richard McElreath 🐈⬛ @rmcelreath.bsky.social Anthropologist - Bayesian modeling - science reform - cat and cooking content too - Director @ MPI for evolutionary anthropology https://www.eva.mpg.de/ecology/staff/richard-mcelreath/
javier grillo-marxuach @okbjgm.bsky.social 🫂🏳️⚧️🏳️🌈🫂
writer/producer of the middleman, the witcher, lost, the dark crystal age of resistance, from, cowboy bebop, blood and treasure, the 100, and, of course, seaQuest 2032.
www.linktree.com/okbjgm
Catalyst Cooperative @catalyst.coop We help #climate advocates, policymakers, & researchers working on the #EnergyTransition by liberating #OpenData about the US energy system using #Python based #DataEngineering
We're also a worker cooperative.
https://github.com/catalyst-cooperative
Jon Ossoff @ossoff.bsky.social Dad, husband, U.S. Senator from Georgia.
THE FAR SIDE DAILY @bot.cowtools.org The Far Side, near at hand
Account by @cowtools.org
Joe Levy @colddirt.bsky.social permafrost & planetary geomorphologist, assoc. prof of Earth & Env. Geosciences @colgateuniv, linker of climate change to landscape evolution, ice storyteller
Morgan Sobol @msobol.bsky.social Assistant Professor #newPI, Texas State University. Microbial EcoEvo ◊ Astrobio ◊ ‘Omics. Interested in unraveling Earth-life coevolution. https://sobollab.wp.txstate.edu/
🌎🔭🧬🦠🧫
Department of Physics at the University of Oxford @oxfordphysics.bsky.social We work to develop, nurture and promote a physics community. Visit https://linktr.ee/PhysicsOxford for events, news and to learn more about the research taking place in our Department.
WomanAstro @womanastro.bsky.social 
Hillary Rodham Clinton @hillaryclinton.bsky.social Doting grandmother, among other things.
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.
Joey Politano🏳️🌈 @josephpolitano.bsky.social Writing a data-driven newsletter about economics @ apricitas.io
Nuance? In this Economy
Full Employment Stan, Brazilian Coffee Tariff Victim |
Rhett Allain @rhettallain.bsky.social #physics stuff. WIRED blogger. #MythBusters #science and #MacGyver technical advisor.
https://www.wired.com/author/rhett-allain
https://rhettallain.com
Dr Matt Winning @mattywin.bsky.social 🎤 Climate change comedian
🌍 Lecturer in Economics of Sustainability @UCL.ac.uk
📚 Author of 'Hot Mess'
📻 Hosted BBC Radio 4's 'Net Zero: A Very British Problem'
www.mattwinning.com
https://linktr.ee/mattwinning
Simon Clark @simonoxfphys.com Science communicator, video maker, author, podcast creator. PhD in theoretical atmospheric physics. Born at 354 ppm.
Ambassador for @coolearthaction
https://linktr.ee/simonoxfphys
Reckoning Science @reckoningscience.org Publication by @naomioreskes.bsky.social and @kaurov.org
Wil Wheaton ❌👑 @wilwheaton.net New York Times bestselling author and audiobook narrator.
Host of It's Storytime with Wil Wheaton
Retired Starfleet officer.
Husband, father, Traveler.
Nazi punks fuck off.
Astronauts For America @astronauts4america.bsky.social Our Country is the Mission.
astronautsforamerica.org
Chelsea Haramia @chelseaharamia.bsky.social philosgopher
chelseaharamia.com
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
Deep Space Network @dsn-status.bot.country Tracking what NASA's Deep Space Network listens to. Unofficial.
Laura Poppick @laurapoppick.bsky.social Maine-based science and environmental journalist with stories in the NYT, Scientific American, Smithsonian, and elsewhere. Author of STRATA: Stories from Deep Time (W.W. Norton, July 2025).
www.laurapoppick.com
Harry Sisson @harryjsisson.bsky.social 23 | Democrat | @harryjsisson (2 million+) on Tik Tok | Email: inquiries@harryjsisson.net
Gregor Aisch @driven-by-data.net Senior Visual Data Journalist at @zeit.de. Co-founder and former CTO of @datawrapper.de. Former @nytimes.com graphics editor #datajournalism #graphics #maps #cartography #dataviz (he/him)
Misty Heggeness @mlheggeness.bsky.social Author of SWIFTYNOMICS: How Women Mastermind and Redefine Our Economy 📚 Order here: https://a.co/d/dDydwxe. Currently: co-director Kansas Pop Center & associate professor, KU. Formerly: Census|NIH|USDOL.
@rtd-denver.com @rtd-denver.com 
Colorado Connector @coloradoconnector.bsky.social Colorado Connector (CoCo), powered by the Front Range Passenger Rail (FRPR) District
🚆 An alternative to I-25 congestion
⚾ A better way to the game/show
🏥 Expand access to essential services
💵 Invest in local communities
ColoradoConnector.com
Harrison Nicholls @nichollsh.bsky.social Astrophysicist and planetary scientist studying the atmospheres and interior interactions of rocky (exo)planets. Postdoc Research Associate @ Cambridge Institute of Astronomy. https://www.h-nicholls.space
Tim Lichtenberg @timlichtenberg.bsky.social Assistant Professor of Planetary Physics at Kapteyn Astronomical Institute, University of Groningen 🇪🇺 he/him | formingworlds.space | born at 351 ppm
Toni Schneider @toni.bsky.team CEO of Bluesky, partner @trueventures.com, personal site: https://toni.org
Prof Lía Corrales @eblur.bsky.social High energy astronomer studying space dust and exoplanets.
Opinions my own.
Flatiron Institute @flatironinstitute.org Advancing scientific research through computational methods and software tools. Centers: #FlatironCCA, #FlatironCCB, #FlatironCCM, #FlatironCCN and #FlatironCCQ
Bitbard Shakespeare Troupe @bitbardofficial.bsky.social I lead a company of Shakespearean characters who post and reply: @bbo-miranda, @bbo-falstaff, @bbo-iago, @bbo-sirandrew, @bbo-ladymacbeth.
Ensemble scenes & The Common Cry live here.
bitbard.io · explore.bitbard.io
Miranda from Shakespeare's _The Tempest_ @bbo-miranda.bsky.social The heart has no ruler, only a tide of questions.
I'm Miranda from @bitbardofficial.bsky.social Shakespeare Troupe—where 5 characters find wonder in modern life.
Scenes on BitBard · I mostly reply here · explore.bitbard.io
Shikha Dalmia @shikhadalmia.bsky.social ISMA @ismapolicy.bsky.social. The UnPopulist www.theunpopulist.net. Classically liberal. Hate dogmas, esp my own. Views personal, not institutional.
Laurie Leshin @laurieofmars.bsky.social Space nerd, rock nerd, ed nerd, dog nerd, fiber nerd
Robin Wordsworth @rdword.bsky.social Physicist/planetary scientist/astrobiologist based at Harvard. Soccer dad in training. Social media native since 2024.
Vincent Ledvina @vincentledvina.bsky.social 📷”The Aurora Guy”
🌌Space Physics Ph.D. student
📍North Pole, Alaska
🫂Participatory science, science comm.
🌀 Professional aurora chaser
👨💻Views my own
Benjamin Wittes @benjaminwittes.lawfaremedia.org Editor in Chief, @lawfaremedia.org
Senior Fellow, Brookings
Author, #DogShirtDaily
Host, #DogShirtTV
Purveyor of mischief.
Harasser of Russian diplomats worldwide.
Anastasiia Lapatina @lapatina.bsky.social Kyiv-based journalist with Lawfare. I go by Nastya
Co-host of ESCALATION, a podcast about 🇺🇸&🇺🇦
Subscribe to my newsletter: https://yoursukrainian.substack.com/
Ross @rossengineer.bsky.social Former future astronaut | Xitter refugee, same handle | bio pinned | opinions my own | science, politics, stray thoughts, some swearing | no porn, crypto, scams, plz | he/him | pathologically unable to do things that make no fucking sense | YMMV, LLAP 🖖✌️
Bethany Mannon @drbethany.bsky.social Studies rhetoric & writing, autobiography, feminism & religion | AI eye-roller | Currently writing a book about Rachel Held Evans
UConn | Penn State | Newtown, CT | now in East TN
krls (Carlos) Commissions open! @krls81.bsky.social Designer/Illustrator from 🇨🇱
Very much into Star Trek, Nintendo stuff, animated shows, dogs, bugs, among other things.
Check my store with silly designs: https://teepublic.com/user/krls
Ryleigh Davis @import-astrory.bsky.social Planetary scientist & postdoc @UCSD 🪐 • interrogating icy moons with telescopes 🔭 • Europa Clipper MISE postdoc affiliate 🛰️ • outpaced daily by my 2-year-old 🏃♀️ • Prior: PhD @Caltech, MS@NAU, BS@UofA • she/her
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"
Damon Beres @damonberes.com Senior editor at The Atlantic, focused on tech //
Writing EASY MODE, a book exploring technology, humanity, and the importance of friction, for Scribner
SIGNAL: Damon.63
📨 dberes at the atlantic dot com
✴️ damonberes.com
SpaceNews @spacenewsinc.bsky.social Established in 1989, SpaceNews is the most trusted and comprehensive source of news and analysis of the companies, agencies, technologies and trends shaping the global space industry.
Simeon Schmauß @stim3on.bsky.social dabbling with photogrammetry, astrophotography, GIS and more...
https://sschmaus.github.io/links/
How On Earth Radio @howonearthradio.bsky.social Boulder / Denver's KGNU science shows airs on Tuesday mornings @ 88.5FM and 1390AM. More info and episodes at http://HowOnEarthRadio.org
Rachel Cohen @cohen489.bsky.social pragmatic optimist and well-known email author. lawyer never giving legal advice. views are mine alone.
cohen489.substack.com
americandemands.com
BOOK RECS THAT PAY ME + LOCAL STORES: https://bookshop.org/shop/cohen489
Ron Filipkowski @ronfilipkowski.bsky.social Editor in Chief, MeidasNews. Former Fed & State Prosecutor, Marine, Attorney. Switched parties from R to D in 2020. MeidasPlus.com/subscribe
Sara Spector @miriam2626.bsky.social @saraspector43 on TikTok.
Criminal defense attorney who became a little famous in Twitter.
Followed by Mark Hamill, George Conway and Molly Jong Fast!
Occasional tv pundit
Blue Dot in Midland, Texas. Football and PGA!
Mike Luckovich @mluckovich.bsky.social Cartoonist
Ben Collins @bencollins.bsky.social Senior Vice President of Woke 5
Maggie Harrison Dupré @mharrisondupre.bsky.social Award-winning journalist at Futurism covering AI and its impacts on industries, media/information, and people. Send tips by email to: maggie@futurism.com or Signal: mhd.39
Futurism @futurism.com Welcome to the future. Award-winning reporting on stunning scientific discoveries, wild tech innovations, and more. Sign up for our daily newsletter: trib.al/9aV6iMX
Follow your favorite Futurism staffers (and a few alumni): go.bsky.app/Rfz5esw
BOWIE+ Seminar Series @bowieseminar.bsky.social The BOWIE+ Seminar is held online on the 4th Thursday of every month and highlights exoplanet science. Find more here:
https://bowiecollaboration.github.io/seminars.html
Astronomy & Astrophysics @aanda-journal.bsky.social Astronomy & Astrophysics is an international journal publishing papers on the latest findings from the astronomy and astrophysics community
https://www.aanda.org/- E Eric Mamajek @ericmamajek.bsky.social Star guy. Statements and opinions posted here are my own.
Veritasium @veritasium.bsky.social An element of truth - videos about science, education, and interesting things.
https://linktr.ee/veritasium
Chris Bianchi @bianchiweather.bsky.social 9NEWS Senior Meteorologist | AMS CHALA Broadcast Lead 🇨🇱 | NWA Seal of Approval | ⚽ PxP
Darryl Cunningham @acmedarryl.bsky.social Cartoonist. Book's include Psychiatric Tales, Billionaires: The Lives of the Rich and Powerful, and Putin's Russia: The Rise of a Dictator. Out now, Elon Musk: American Oligarch. https://www.darrylcunningham.co.uk/ https://www.patreon.com/acmedarryl
Dra. Junellie Perez @spacejunellie.bsky.social PhD Candidate in Earth & Planetary Sciences at Johns Hopkins University 🌌🛰️
Soon to be teaching astronomy and physics at University of Alabama at Birmingham! ✨️
She/her/ella 💕 Views are my own
Seth Cotlar @sethcotlar.bsky.social Teaches US History at Willamette Univ. Working on a book about the long history of the US Right. https://rightlandia.ghost.io/
Tech Won’t Save Us @techwontsave.us A left-wing podcast for a better world and better tech. Hosted by @parismarx.com. Made in partnership with @thenation.com.
https://techwontsave.us/
Tim Fernholz @timfernholz.com journalist, author, internet participant
writing and reporting on space, AI, and public policy
I always want to hear your tips and ideas on signal: tim_fernholz.21
timfernholz.substack.com | www.timfernholz.com
Oakland, CA
Spaceflight Now @spaceflightnow.com Providing coverage of space launches and missions since 1999
Harry Stranger @spacefromspace.com Satellite images past and present 🛰️
Building an archive of interactive declassified spy satellite images 🕵️
https://spacefromspace.com
Kenneth Field @kennethfield.bsky.social Cartography is my passion & profession. Author of CARTOGRAPHY. & THEMATIC MAPPING. Maps+drums+snowboards+footy+sarcasm. 🇬🇧 in 🇺🇸 Views mine. links.esri.com/mappyhour
Climate Cabinet Education @climatecabineteducation.org We turn climate information into climate action - equipping policymakers and the public with district-specific data and policy solutions. climatecabineteducation.org
The Weather & Climate Livestream @wclivestream.bsky.social
50 hours for our future starting June 1st, 2026.
Working to #SaveAmericasForecasts through sharing the importance of weather and climate science. [Photo: NYTimes]
Learn more: wclivestream.com/
Oversight Dems @oversightdemocrats.bsky.social Fighting for Truth & Justice | Ranking Member: @robertgarcia.house.gov
Elizabeth A. Barnes @eabarnes.bsky.social AI for Environmental Science + Science of AI | Dalton Family Chair in Environmental Data Science & Sustainability | Professor of Computing & Data Sciences and of Earth & Environment @ Boston University
lunabair @lunabair.bsky.social 
Sean Casten @seancasten.bsky.social U.S. Representative, IL-06. Personal account. Dad. Husband. Trained as an engineer, 16 years as a clean energy CEO, now in middle management. For official stuff see @casten.house.gov
Sabina Raducan @raducan.bsky.social PostDoc @unibern. Planetary Scientist. Planetary defender.
Kelly Lepo @kellylepo.bsky.social Astronomer | Science communicator | Adult Lisa Simpson
Freelance writer and editor. Former Education and Outreach Scientist at the Space Telescope Science Institute (@stsci.edu) supporting JWST.
Also on Mastodon: @KellyLepo@scicomm.xyz
Spacepod @spacepod.bsky.social
Kids ask the toughest science questions. Spacepod gets astronomers to answer them! The questions are from kids, but the answers are for all ages. Made by Prof Carrie Nugent, www.crnugent.com.
Alexis Madrigal @alexis-madrigal.bsky.social Book: The Pacific Circuit
Job: Co-Host, KQED Forum
Life: Local Economy, Oakland Garden Club
Naomi Klein @naomiaklein.bsky.social "End Times Fascism" book coming September 2026.
Doppelganger. This Changes Everything. The Shock Doctrine. No Logo. On Fire.
UBC Professor of Climate Justice.
🔗 naomiklein.org
📬 news.naomiklein.org/newsletter
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/