Tom Hilder @tom-hilder.bsky.social Astrophysics PhD candidate
github.com/tomhilder
Halifax Regional Fire & Emergency @hfx-fire.bsky.social Official account for Halifax Regional Fire & Emergency, the oldest fire department in Canada. Not monitored 24/7. Call 911 in an emergency.
Richard Staff @richstaff.bsky.social Local Dunderhead, sometimes writer. 
@paulmolliere.bsky.social @paulmolliere.bsky.social Atmospheric modeling and retrieval group
Max Planck Institute for Astronomy
GoodFesto @goodfesto.bsky.social 🚀 Technology, pixels and rhythm. We choose the best of the future and nature.
🎮 AI-powered insights, old-school vibes, and nature breaks — all in one signal.
✨ Just good things. 🇺🇸
Pieter van Dokkum @dokkum.bsky.social 
Kareem El-Badry @kelbadry.bsky.social Astronomer @Caltech.edu, studying binary stars and black holes 
Fred Kaplan @fredmkaplan.bsky.social Slate's War Stories columnist; author of The Bomb, Dark Territory, The Insurgents, 1959, Daydream Believers, The Wizards of Armageddon, and--most recently--A Capital Calamity (a novel); also jazz critic for Tracking Angle.
Aaron Bateman @aaronbateman.bsky.social Assist. Prof. of History & Intl Affairs at George Washington U. | Book #1 : "Weapons in Space" | Book #2 "Wiring an Empire" (contracted w/ MIT Press)
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
Caitlin Talmadge @proftalmadge.bsky.social MIT professor, Brookings senior fellow, series editor at Cornell Press ⎮ Foreign policy, military operations, civil-military relations, nuclear weapons, authoritarianism ⎮ Views are my own ⎮ Book: The Dictator's Army
https://www.caitlintalmadge.com/
James Cameron @jjjcameron.bsky.social Professor of Modern North American History at the University of Oslo, Norway. Nuclear strategy and arms control.
Togzhan Kassenova @togzhankassenova.bsky.social Almaty-born, DC-based expert on nuclear politics and financial crime prevention
Author of Atomic Steppe: How Kazakhstan Gave Up the Bomb (Stanford University Press, 2022)
http://www.togzhankassenova.com
Ryan Evans @ryanevans.bsky.social Founder, War on the Rocks (warontherocks.com) and Bedrock Knowledge (thebedrock.co). Opinions are my own. I'm not a journalist so please don't mistake me for one.
Christoph Koettl @ckoettl.bsky.social Visual Investigations journalist at New York Times, with a weakness for satellite images. Austrian in NYC.
https://www.nytimes.com/by/christoph-koettl
Brent Toderian @brenttoderian.bsky.social Global advisor on better cities, city planning, transportation & urban change. City planner + urbanist leading @ToderianUW.bsky.social. Past Chief Planner for Vancouver BC. Past/founding President of @CanUrbanism.bsky.social. International speaker & media.
Jarrett Walker @humantransit.bsky.social Public transit planning consultant and commentator. Author of the book “Human Transit” and the blog HumanTransit.org. The consulting firm is jarrettwalker.com. Also obsessed with literature and plants.
Oliver Lord @olord.bsky.social Leading @cleancitiescampaign.org in the UK
Healthy & climate friendly transport geekery | 🏳️🌈 | Reposts ≠ endorsements
https://cleancitiescampaign.org/UK
Glenn Lyons @metalprofessor.bsky.social Professor of Future Mobility. Passionate about: Climate action; Equality, diversity and inclusion; Professionalism; and Heavy Metal 💚💙🤘
https://glennlyons.blog/
David Zipper @davidzipper.bsky.social Thinking, writing, and speaking about transport, cities, and tech. Contributing Writer @ Bloomberg and cohost @ Look Both Ways w/David & Wes. Working on a book about congestion pricing. linktr.ee/davidzipper
Newsletter & contact info: www.davidzipper.com
Melissa & Chris Bruntlett @modacitylife.com Dutch-Canadian authors and urban mobility advocates who strive to communicate the benefits of happier, healthier, more human-scale cities.
Chris Boardman CBE @chrisboardman.bsky.social Pedalling a people powered panacea since….well for ages
Veronica O. Davis @veronicaodavis.bsky.social Author, Inclusive Transportation: A Manifesto for Repairing Divided Communities
veronicao.com
She/Her #TransportationNerd #InclusiveTransportation 🔺🐘
A. Zivarts @nondriver.bsky.social Author, When Driving Is Not an Option: Steering Away from Car Dependency
low vision (#nystagmus), bus lover, bike rider
annazivarts.com
#WeekWithoutDriving weekwithoutdriving.org
Nondrivers Alliance nondrivers.org (c3)
Nondriver Action ndaction.org (c4)
Stephen Frost @sfrost.bsky.social Managing Director, Bridges for Communities, supporting people to live well together
📍Bristol 🇬🇧
Posts on: Bristol, community cohesion & social inclusion, climate & nature, deliberative democracy, public engagement and positive news.
Views my own.
Barbara Ryden @bsryden.bsky.social Writer of astrophysics textbooks, servant to cats
The Associated Press @apnews.com Advancing the power of facts, globally 🌎
Ilhan Omar @ilhanmn.bsky.social Mom, Refugee and Congresswoman for #MN05. Progressive Caucus Deputy Chair. Fighting for a more just world.✨ http://HC.com/IlhanOmar 
Ben Rhodes @rhodesben.bsky.social Pod Save the World. NYT opinion. MSNBC. Author: After the Fall and The World As It Is
Elizabeth Warren @warren.senate.gov U.S. Senator, Massachusetts. She/her/hers. Official Senate account.
https://substack.com/@senatorwarren
Adam Schwarz @adamjschwarz.bsky.social Writer & Political Commentator | Making ground-level documentaries on the people, movements and events reshaping Britain & beyond.
Who are Britain’s new far right? Watch our first film 👇
https://youtu.be/ii7UIibLYW4?si=mWxs14s8Ol1T1dMN
nicholas rui @nrui.bsky.social i like space
nicholasrui.com
Gijs Nelemans @gijsnelemans.bsky.social ✨ 🔭 Astronomer 💥 💻 | Binary stars 💫| Gravitational Waves 〰️🌊|
Ezra Klein @ezrakleinbot.bsky.social Ezra Klein’s tweets, articles, clips and podcasts on Bluesky.
Barima Owusu–Nyantekyi @barima-on.bsky.social Cultural Intelligence, Brand Strategy, Art Advisory and Photography. Knows things about Ghana and Menswear
CatherineQ @catherineq.bsky.social Astronomer, science communicator, over-thinker extraordinaire. @AucklandUni space person @AucklandSpace. Autoimmune illness. 🇳🇿🇺🇸
Meredith Rawls @merrdiff.bsky.social Astronomer at UW, data pipeline wrangler for Rubin Observatory, satellite mitigation leader via IAU CPS SatHub, mom, violist, Ballardite (Seattle), family cargo e-bike evangelist, Episcopalian, etc. Opinions all mine
The Serfs (youtube.com/theserfstv) @theserfstv.bsky.social Métis (he/him) weareserfs.com
I explain the internet. LGBTQ+ activism and freedom for all are my jam.
Go watch youtube.com/@theserftimes and patreon.com/theserfs
Samaya Nissanke (she/her) @samayanissanke.bsky.social Astrophysicist, gravitational waves and multi-messenger astronomy, working mother, European + 🌍 @ ❤️, British + born in London UK, professor at the University of Potsdam, DESY & German Centre for Astrophysics (DZA); also @GRAPPAcentre at Univ. of Amsterdam.
Abbie 🌟 @abbiestev.bsky.social Experimental public programs in sci + art + tech, extronomer, nerd doctor of black holes & neutron stars, Michigoose, toddler mom, neurospicy, sober, pro-trans, she/her #BiinSci #WomenInSTEM #UglyDogs
Olivia Lanes @livlanes.bsky.social Quantum science and education at IBM.
And also in my free time.
I like quantum computing, science literacy and animals and dislike misinformation, pseudoscience, and goat cheese.
Faezeh Manesh @astrofaezeh.bsky.social Galaxy enthusiasts | Astronomy PhD student @UC Riverside | Favorite colors: UV/Optical| she/her
https://faezehmanesh.github.io
Lydia Caradonna @lydiacaradonna.bsky.social Your favourite hooker’s favourite hooker ✨ wrote a few things people liked ✨ DecrimNow ☂️
Chico Harlan @chicoharlan.bsky.social Global climate correspondent for the Washington Post. Previously Rome bureau chief. Past lives in Seoul, Tokyo, D.C., and Sydney.
Michael Sheldon @michaelsheldon.bsky.social Senior Investigator @ CIR
Formerly: Bellingcat, DFRLab
Logan Williams @obtusatum.bsky.social Mountains and websites; maps and birds; context collapse. Projects: https://subject.space/. Work: Data, research and technology for investigations @bellingcat.com. Personal account, posts/opinions are my own. New York via Amsterdam and Oregon.
@mgs902.bsky.social @mgs902.bsky.social 
Jake Godin @godin.bsky.social Senior Researcher, Bellingcat. Previously at Scripps News. 
Eliot Higgins @eliothiggins.bsky.social Founder and creative director of Bellingcat and director of Bellingcat Productions BV. Author of We Are Bellingcat.
Evan Hill @evanhill.bsky.social Washington Post investigations reporter
Co-host of Schlock and Awe: https://schlockandawe.substack.com/
Executive Council, Washington-Baltimore News Guild
Emanuel (Mannie) Fabian @manniefabian.bsky.social Times Of Israel military correspondent | BGU alum | hmu: mannie@timesofisrael.com | http://mann.ie
Jonathan Mayo @jonathanmayomlb.bsky.social Prospect guy at MLB Pipeline.
Ken Rosenthal @ken-rosenthal.bsky.social 
Chris Krebs @thekrebscycle.bsky.social Aka @c_c_krebs over there 
Malware Unicorn @malwareunicorn.bsky.social @Straiker. Ex-Microsoft. Ex-Meta RedTeam, Ex-Endgame, Ex Fireeye. malwareunicorn.org
Łukasz @maldr0id.bsky.social Military-grade reverse engineer @ Google, working on Android malware
Got mistaken for a member of Project Zero once.
Everything here is my own opinion
he/him ✨🌈🦄
Tarah Wheeler @tarah.org CSO of TPO.group ♦️ EFF Board of Directors♦️she/her ♦️ bestselling author but only that one time
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/
Ben Clemens @benclemens.bsky.social Writer at FanGraphs. Part-time developer, too. Dog lover. Wife guy. Got the talking down, we'll have to see about the listening.
Alex Eisert @mindoverbatter.bsky.social Blue Jays R&D. Past: FanGraphs, Pinstripe Alley, SIS, PitcherList. 2x SABR finalist- D alex chamberlain @dolphhauldhagen.bsky.social sabermetric has-been. he/him
Sarah Burch @sarahlynnburch.bsky.social Professor, Canada Research Chair - Sustainability transitions and climate change policy. University of Waterloo, 🇨🇦
Executive Director, Waterloo Climate Institute. IPCC LA 6AR, WGIII.
Adam Terando @adamterando.bsky.social Climate scientist and urban/transportation policy dilettante. Personal account with my own opinions.
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 🐈⬛ •🇸🇪
Dr. Jeff Masters @drjeffmasters.bsky.social Extreme weather and climate change expert writing for Yale Climate Connections. Co-founder, Weather Underground; former hurricane hunter.
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.
Michael E. Mann @michaelemann.bsky.social Scientist/Author/Speaker; Presidential Distinguished Prof/Director Center for Science, Sustainability & the Media, U. Penn; National Academy of Sciences; American Academy of Arts & Sciences; Royal Society; Tyler Prize
Jennifer Rodriguez @astrojennifer.bsky.social Astronomy PhD Student at Ohio State 🌌
She/her/ella 🇨🇱
Andy Lee, PhD @andylee.bsky.social studying the changing world 🪰🐟🐚🦨🧬| #PopGen, rapid evolution, genomics, range shifts | he/they 🌈
李慕安, GiljeGiljau Makakaruwang, son of Paiwan and Ketagalan on the beautiful island 🌸
andymuanlee.com
Sarah Perez @sarahp.bsky.social TechCrunch reporter and editor. Used to be @sarahintampa / @sarahperezTC on Twitter. Tips? Signal @sarahperez.01 / sarahp@techcrunch.com.
Molly Knight @mollyknight.bsky.social Journalist and author. @HoFoCo.org board member.
My newsletter, the Long Game, is about baseball, creativity, and mental health. You can find it here: https://mollyknight.substack.com.
My dog is named Canelo.
Mekka Okereke @mekka.mekka-tech.com Building Digital Ecosystems at Google.
https://hachyderm.io/@mekkaokereke
He/him.
Erica Joy Astrella @ericajoy.astrel.la southern roots, oakland blossoms 🌸
tech blah blah
@b.astrel.la’s weirder half
Never, ever be afraid to make some noise and get in good trouble, necessary trouble. -John Lewis
probably on threads https://www.threads.com/@theericajoy
kate conger @kateconger.com tech reporter for the NYT!
co-author of CHARACTER LIMIT!
signal: kateconger.11
buy our book: https://www.penguinrandomhouse.com/books/737290/character-limit-by-kate-conger-and-ryan-mac/
tour dates & translations: https://linktr.ee/kateconger
Steward Observatory, University of Arizona @stewardobservatory.bsky.social Official UA Astronomy and Steward Observatory account. Pioneers of JWST MIRI and NIRCam, Event Horizon Telescope, and GMT, and home to the Richard F. Carris Mirror Lab, Mt Lemmon Sky Center, and one of the world’s top astronomy programs. astro.arizona.edu
derek guy @dieworkwear.bsky.social Menswear writer. Editor at Put This On. Words at The New York Times, The Washington Post, The Financial Times, Esquire, and Mr. Porter.
If you have a style question, search:
https://dieworkwear.com/ | https://putthison.com/start-here/
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
Leonard Burtscher @ileo.de he; husband; father of 3; climate and energy policy Umweltinstitut München; astronomer with Astro4Earth and Uni Leiden; ADFC Garching
Jonas Kemmer @jonaskemmer.bsky.social Er/he/him. Astronomy and Climate Action related postings.
Eric Koch @eric-koch.bsky.social Astronomer | Data scientist
janiceleeastro @janiceleeastro.bsky.social ✨ looking to our future with NASA's Habitable Worlds Observatory (SuperHubble!) & AI
✨ studying star formation and star clusters in nearby galaxies with PHANGS, Hubble, JWST
Peter Erwin @peter-erwin.bsky.social Astronomer studying black holes and nearby galaxies. Author of Imfit (http://github.com/perwin/imfit).
Paul Lasky @plasky.bsky.social Professional astrophysicist, amateur human, parental enthusiast.
Gravitational waves, black holes, neutron stars, GRBs, cosmology; Monash Astrophysics, OzGrav, AAL. 
Abbas Askar @abbasaskar.bsky.social Astrophysicist
https://abbasaskar.com/
Kyle Cranmer @kylecranmer.bsky.social Director Data Science Institute @UWMadison, Professor of Physics,
EiC @MLSTjournal. Physics, stats/ML/AI, open science.
Ariel Edwards-Levy @aedwardslevy.bsky.social Polling editor at CNN, keeping (cross)tabs on public opinion and the news. I like puns.
Jonathan Fortney @jjfplanet.bsky.social UC Santa Cruz Astronomy Professor, Director of the Other Worlds Laboratory (OWL). Textbook Forthcoming: "Planetary Astrophysics: Exoplanets & Solar System." Father, Husband, Minnesotan, Runner. Proud product & employee of the public school system.
Hakeem Jefferson @hakeemjefferson.bsky.social Assistant professor of political science at Stanford. Forthcoming book, Respectability Politics, with University of Chicago Press.
Not Hakeem Jeffries, the Minority Leader.
hakeemjefferson.com
Star Cluster Memes For Stellar Overdensity Teens @starcluster.meme star cluster memes worse than your isochrone fit 📉
voted #1 Blanco 1 fan by the Blanco 1 fan club
✨ maintained by @emily.space ✨
Tom Wagg @tomwagg.bsky.social Astro PhD student at UW | Harvard '20 | I love binary stars, galactic dynamics, gravitational waves (LISA!) and writing open-source tools | 🏑 field hockey & 🧗 rock climbing outside of astro
tomwagg.com - https://github.com/TomWagg/
Marcin Semczuk @msemczuk.bsky.social Dad & Husband | Postdoc in Astrophysics (galactic dynamics & morphology) at the Universitat de Barcelona 🌌 | 🇵🇱 in 🇪🇸 | FPL enthusiast ⚽️
Aditya Vijaykumar @adivijaykumar.bsky.social CITA Postdoctoral Fellow: LIGO and gravitational waves. (Ex-?)theatre artist. @alsogoesbyV on Twitter.
Website: adivijaykumar.github.io
Jen Mercieca @jenmercieca.bsky.social Explaining anti-democratic rhetorical tricks. Award winning #teamrhetoric professor & author. Very earnest. Democracy cheerleader. Views represent my academic research, not my university. I post things on substack: https://jennifermercieca.substack.com/
Lora Kolodny @lorak.bsky.social reporter at cnbc.com. email: lora.kolodny@cnbc.com - ex-wsj, techcrunch & all over. i cover: elon musk cos. mostly tesla & spacex (some climate tech). my posts here are my own. optimistic on the inside. dm me on signal: lorakolodny.55
Dr Abeba Birhane @abeba.blacksky.app Founder & PI @aial.ie. Assistant Professor of AI, School of Computer Science & Statistics, @tcddublin.bsky.social
AI accountability, AI audits & evaluation, critical data studies. Cognitive scientist by training. Ethiopian in Ireland. She/her
Jason Koebler @jasonkoebler.bsky.social Journalist @404Media.co
Signal: jason.404 // email: jason@404media.co
Edward Ongweso Jr @edwardongwesojr.com writer, editor, degenerate, Luddite, decel
thetechbubble.substack.com
Brandy Zadrozny @brandyzadrozny.bsky.social Reporter lady @ms.now
Signal username: brandyzadrozny.53
Email from a non-work account: brandy.zadrozny@ms.now
Marc Elias @marcelias.bsky.social Founder @democracydocket.com. Chair of Elias Law Group. My dog's name is Blue.
Ken Tremendous @kentremendous.bsky.social I am a pension fund monitor for Fremulon Insurance.
New Book "Big Fan" (with Joe Posnanski) available May 19. Preorder signed copies here: https://josephbeth.com/book/9798217045112