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.
Michael Barany @mbarany.com Historical and cultural theories about maths and science theories. Fields Medal killjoy. Scotland enjoyer. formerly @mbarany on birdsite and intermittently @mjb@mathstodon.xyz on fediverse
Kamala Harris @kamalaharris.com Always fighting for the people.
Wife, Momala, Auntie. She/her.
107 Days, my behind-the-scenes account of the shortest campaign in history, is available now at https://kamalaharris.link/107Days.
Greg Egan @gregegansf.bsky.social SF writer / computer programmer
Latest novel: MORPHOTROPHIC
Latest collection: SLEEP AND THE SOUL
Web site: http://gregegan.net
Also: @gregeganSF@mathstodon.xyz
fesshole 🧻 @fesshole.bsky.social Confess your sins anonymously - will the internet absolve you?
Buy show tickets 2025/6: sites.google.com/view/fesshole
Add confession b3ta.com/addfess
Buy book amazon.co.uk/s?k=very+best+of+fesshole&tag=b3ta-21
Run @robmanuel.b3ta.com
Ethan Mollick @emollick.bsky.social Professor at Wharton, studying AI and its implications for education, entrepreneurship, and work. Author of Co-Intelligence.
Book: https://a.co/d/bC2kSj1
Substack: https://www.oneusefulthing.org/
Web: https://mgmt.wharton.upenn.edu/profile/emollick
John C. Baez @johncarlosbaez.bsky.social Mathematical physicist
Matthias Köppe @mkoeppe.bsky.social Professor, UC Davis #Mathematics. He/him. #DavisCA.
Made #SageMath pip-installable @passagemath.org.
https://github.com/mkoeppe #Python #OpenSource
#cutgeneratingfunctionology #optimization #orms
I block accounts to increase reading focus.
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
Angus Warburg @amjwarburg.bsky.social Cambridge English graduate. Writing, hopefully.
https://opus120.substack.com/
Cambridge Computer Science @cst.cam.ac.uk Cambridge University Computer Science & Technology Department (aka the Computer Lab). We built the UK's 1st usable programmable computer, offered the UK's 1st Computer Science degree, created the 1st ever webcam - and continue to advance the field today.
Energy & Environment Group, Cambridge Computer Science @eeg.cl.cam.ac.uk We are the Energy and Environment research group at Cambridge Computer Science. You can find our homepage at https://www.cst.cam.ac.uk/research/eeg, and all videos from our seminar series at https://watch.eeg.cl.cam.ac.uk
University of Cambridge Conservation Research Institute @conservation.cam.ac.uk Photos by Mohammed Ahmed and Bruno Martins on Unsplash
Anil Madhavapeddy @anil.recoil.org Professor of Planetary Computing at the University of Cambridge @cst.cam.ac.uk, where I co-lead the @eeg.cl.cam.ac.uk and work on computing for global biodiversity and climate change with @conservation.cam.ac.uk.
Homepage at https://anil.recoil.org
Paul Graham @paulgbot.bsky.social Mirror of Paul Graham’s X account (https://x.com/paulg). Maintained by @fela.xyz, purely as a public service.
Matteo Wong @matteowong.bsky.social Staff writer on science, tech, and health at The Atlantic covering AI. Signal @matteowong.52
Barack Obama @barackobama.bsky.social Dad, husband, President, citizen. barackobamabooks.com
Helen De Cruz @helendecruz.net Philosopher writing on science, religion, SFF, SFWA, Codex, lute music.
newsletter: http://helendecruz.substack.com
website: https://helendecruz.net/
My book Wonderstruck - https://press.princeton.edu/books/hardcover/9780691232126/wonderstruck
Nick Fleisher @nickfleisher.bsky.social Linguist at UW-Milwaukee. Syntax & semantics, higher ed, Wisconsin politics &c.
nixCraft @cyberciti.biz Enjoy Linux & Unix-like systems, open-source software, and programming/compsci? Into Sysadmin & DevOps? Follow us to make the most of your IT career! Discover new tools and apps daily, plus a dose of humor ⤵️
https://www.cyberciti.biz
Waterstones @waterstones.bsky.social All about the books
Ramón Alvarado @ramonalvarado.bsky.social Associate Professor of Philosophy. Editor-in-Chief of Global Philosophy. President of the International Association for Computing and Philosophy (IACAP) and the Association for Philosophy and Computing (APC). Philosopher of computational methods.
Hank Green @hankgreen.bsky.social Long Time Internet Guy
Prahladh Harsha @prahladh.bsky.social Computer Scientist, Mathematician, Dancer, Uncle
https://www.tcs.tifr.res.in/~prahladh/
Matt Salomone @matthematics.com Crusty old dean. Mathematics enjoyer. Views mine. ¹Best known for other work. 📍 Cape Cod, MA
BMUCO @bmuco.org Official handle of BMUCO, a global science organisation dedicated to advancing public understanding of science and addressing global challenges like climate change. 🔭 www.bmuco.org
Daniel S. Goldberg @profgoldberg.bsky.social Professor. Attorney, historian, public health ethicist. Always all ways public health. Jiujitsu🟤, Star Wars, Batman, Coffee. #LegalEpi #Stigma #PHLaw #PHEthx #Disability #HistPubHealth (all opinions mine) H/h/h. ✡️
Maike Osborne @maosbot.bsky.social Mother, wife, Australian, Professor of Machine Learning in Oxford. Long Covid, trans rights, music, reggae, AI must be good for humans, https://www.robots.ox.ac.uk/~mosb. She/her 🏳️⚧️🏳️🌈
Cambridge Philosophical Society @camphilsoc.bsky.social Founded in 1819 for the purpose of promoting scientific inquiry, the Cambridge Philosophical Society is an exciting hub for the promotion of scientific research
Matt Parker @standupmaths.bsky.social That maths guy from the internet.
Dan Plyukhin @dplyukhin.bsky.social dplyukhin.github.io
elisa freschi @elisafreschi.bsky.social Sanskrit (and) philosophy. Permanently in beta phase. Blogging at http://elisafreschi.com and http://indianphilosophyblog.org. Articles at PhilPapers Here to learn & share
Experimental Philosophy @xphilosopher.bsky.social An account for experimental philosophy - an interdisciplinary field at the intersection of philosophy and psychology https://en.m.wikipedia.org/wiki/Experimental_philosophy#:~:text=Experimental%20philosophy%20is%20an%20emerging,inform%20research%20on%20phi
British Journal for the Philosophy of Science @thebjps.bsky.social Latest issue:
https://www.journals.uchicago.edu/toc/bjps/current
BJPS Review of Books:
https://www.thebsps.org/reviewofbooks/
BJPS Short Reads:
https://www.thebsps.org/short-reads/
Podcast:
https://podcasters.spotify.com/pod/show/bjps
Philosophy of Science Association @philsci.bsky.social Founded in 1933, the Philosophy of Science Association promotes research, teaching, and free discussion of issues in the philosophy of science from diverse standpoints.
Philosophy Matters @philosophymatters.bsky.social 
Philosophy of Science @philscijournal.bsky.social The official journal of the Philosophy of Science Association. Dedicated to the furthering of studies and free discussion from diverse standpoints in PhilofSci.
https://www.cambridge.org/core/journals/philosophy-of-science/latest-issue
Philosophy Bites @philosophybites.bsky.social Philosophy Bites podcast - co-hosted by David Edmonds and Nigel Warburton
Existential Comics @existentialcomics.com A philosophy webcomic about the inevitable anguish of living a brief life in an absurd world. Also jokes. 
Ryan North @ryannorth.ca You know, the @qwantz.com guy! The How To [Invent Everything | Take Over The World] guy? The Fantastic Four / Flash / Squirrel Girl guy? The non-linear Shakespeare guy? The "stuck in a hole with his dog" guy?
Look... I'm a lot of guys
🔗 ryannorth.ca
Katie Mack @astrokatie.com Cosmologist, pilot, author, connoisseur of cosmic catastrophes. TEDFellow, CIFAR Azrieli Global Scholar. Domain verified through my personal astrokatie.com website. She/her. Dr.
Personal account; not speaking for employer or anyone else.
Rosemary Mosco @rosemarymosco.com Nature comics (Bird and Moon). Books about nature. Talks. Bird facts. rosemarymosco.com She/her.
PHD Comics @phdcomics.com Comics by Jorge Cham: Oliver's Great Big Universe, Elinor Wonders Why, ScienceStuff and PHD Comics
New Scientist @newscientist.com The best place to find out what’s new in science – and why it matters.
Michael Hoffman @michaelhoffman.bsky.social Chair, Computational BIology and Medicine Program, Princess Margaret Cancer Centre, University Health Network.
Associate Professor, Medical Biophysics, University of Toronto.
Disclosures: https://github.com/michaelmhoffman/disclosure/
Jonathan Lambert @jonlambert.bsky.social Science journalist at NPR covering global health. Minnesotan in DC. jlambert1@npr.org. On signal @jonlambert.12
https://jonathanmlambert.com/
John D. Cook @johndcook.bsky.social Mathematician, data privacy consultant
See also @johndcook.mathstodon.xyz.ap.brid.gy
Prof. Feynman @proffeynman.bsky.social A universe of atoms, an atom in the universe. Tribute to the great explainer Prof. Feynman. Posts about Science and Wisdom.
George Musser @georgemusser.com contributing editor, Scientific American, Nautilus; contributing writer, Quanta; author, Putting Ourselves Back in the Equation, Spooky Action at a Distance, Complete Idiot’s Guide to String Theory; planetary scientist, local historian, bassist, salsero
Lisa Grossman @astrolisa.bsky.social Science journalist (current: Science News; past: New Scientist, Wired). 2023-24 Knight Science Journalism fellow. Lifelong astronomy nerd. Queer Jewish mom 🏳️🌈 she/her/hers
ProfBrianCox @profbriancox.bsky.social Professor of Particle Physics at The University of Manchester and Royal Society Professor for Public Engagement in Science
National Association of Science Writers (NASW) @sciencewriters.org Fighting for the free flow of science news since 1934. A 501(c)(6) professional membership organization.
💚 https://www.nasw.org
🎟️ https://www.sciencewriters2025.org
Science Friday @scifri.bsky.social Entertaining & educational conversations about science, tech, + more. Hosted by Ira Flatow and Flora Lichtman. From WNYCStudios.
STAT @statnews.com Reporting from the frontiers of health & medicine.
Explore all of our newsletters here: https://www.statnews.com/signup/
SETI Institute @setiinstitute.bsky.social Our mission is to lead humanity’s quest to understand the origins and prevalence of life and intelligence in the universe and share that knowledge.
Neil deGrasse Tyson @neildegrassetyson.com Astrophysicist
Apoorva Mandavilli @apoorvanyt.bsky.social Science and global health reporter for The New York Times
https://www.nytimes.com/by/apoorva-mandavilli
Signal: amnyt.91
Gregory Barber @gregbarber.bsky.social journalist in the PNW / find me in NYT, Quanta, MIT Tech Review etc. / teach at UC Berkeley / ex-Wired science / gregory_barber@proton.me
Ben Brubaker @benbenbrubaker.bsky.social Computer science staff writer @quantamagazine.org, ex-physicist. More about me at benbrubaker.com. Banner art by Nico Roper — find more of their work at nicoroper.com. [Obligatory disclaimer about views being my own.]
Jazmeen isa Qureshi ✊🏽🐝🏳️⚧️ (they/she) @jazzywildheart.bsky.social monster, phd-er, "professional" Bug Lady, queer[ing] ecologist, ex-marine biologist, poet.
Facilitator.
Environmental Advisor.
Critical ecology.
Escaping...
Writing a book (trying to)
Bugs'n'Liberation
https://linktr.ee/altbrownwriter
Wikipedia Picture of the Day @wiki-potd.bsky.social 🤖 posting of the Picture of the Day from Wikipedia every day 🌎 Sibling account at @potd-context.bsky.social
I'm open source! Maintained by @drezner.xyz
Learn more about how these images are curated at en.wikipedia.org/wiki/Wikipedia:Picture_of_the_day
WWF UK @wwf.org.uk When we restore nature, nature restores us. 🌍
BirdLife Europe & Central Asia @birdlifeeurope.bsky.social When birds thrive, nature thrives, and so do we.
We take the pulse of the planet through birds; protecting their habitats & global biodiversity.
BirdLife is the largest nature conservation partnership in the world.
BirdGuides @birdguides.bsky.social Britain's leading website for birders. Live sightings, breaking news and trusted content.
Birds of the World | The Cornell Lab @birdsoftheworld.bsky.social Explore the remarkable diversity of birds with Birds of the World, the world's leading collection of avian life histories published by the Cornell Lab of Ornithology in collaboration with a global editorial team of avian experts. birdsoftheworld.org.
West Midlands Ringing Group @westmidlandsrg.bsky.social National Award Winning Bird Ringing Group. Pioneered Thermal Imaging Technology for bird surveys, specialising in Farmland species #thermalimaging #bewareofimitations
https://www.westmidlandsringinggroup.co.uk/
British Birds @britishbirds.bsky.social British Birds publishes articles on identification, distribution, migration, conservation and taxonomy. We're THE bird journal of record in Great Britain.
RSPB Investigations @rspbinvestigations.bsky.social The RSPB’s Investigations Team is dedicated to protecting birds of prey. Together, we can end raptor persecution. Follow us for updates.
Lorraine @lorrainebirder.bsky.social Nature lover, gardener , WWT volunteer. Photography.
RSPB @rspb.bsky.social Filling these blue skies with birds, and saving nature while doing it.
🦅🦆🦉🐦🐤🐧
Our Website: https://brnw.ch/21wQQ1O
Cover photo: Aintright 📷
The Intercept @theintercept.com Fearless, adversarial journalism. Join our newsletter to get our best investigative reporting delivered to you: https://theintercept.com/newsletter/
Financial Times @financialtimes.com The best of FT journalism, including breaking news and analysis.
https://www.ft.com
The users this account follows are verified FT staff or contributors.
Adam Savage @asavage.bsky.social Maker. Science Communicator. Connector. 
Kingfisher & Wombat @tkingfisher.com Wrote some books, won some awards. Strong feelings about plants. She/her
Carl Zimmer @carlzimmer.com NYT columnist. Signal: carlzimmer.51
Newsletter: https://buttondown.com/carlzimmer/
Web: http://carlzimmer.com
[This account includes a tweet archive]
Gary Marcus @garymarcus.bsky.social AI and cognitive science, Founder and CEO (Geometric Intelligence, acquired by Uber). 8 books including Guitar Zero, Rebooting AI and Taming Silicon Valley.
Newsletter (100k subscribers): garymarcus.substack.com
Andres Löh @kosmikus.bsky.social Partner and Haskell Consultant at Well-Typed LLP. Board member of the Haskell Foundation. Co-host of the Haskell Interlude and the Haskell Unfolder.
Posts mostly about Haskell, and occasionally about books, video games, and other things that interest me.
Leni Aniva @aniva.bsky.social 🔧 Researcher in Machine Assisted Theorem Proving at https://centaur.stanford.edu/
☯️ Director of NorCal Hakkero Factory No. 1 (Physics-based #touhou #cosplay)
🔗 https://leni.sh, https://pixelfed.social/chrysoberyl
❄️ Training AI on my content is prohibited
Michael Kinyon @profkinyon.bsky.social Mathematics professor at the University of Denver. Quasigroups, Semigroups, Automated Deduction. He/Him. Occasionally drop in at Mathstodon, but not as much as I used to.
Rohan French @rohanfrench.bsky.social An Australian Philosophical Logician based at UC Davis. 
Jay Cummings @longformmath.bsky.social Math professor at CSU Sacramento
Álvaro Lozano-Robledo @mathandcobb.bsky.social Professor of Mathematics, number theorist (arithmetic geometry), author, Hagoromo chalk ambassador, bonsai amateur.
Views expressed are my own.
Arvind Narayanan @randomwalker.bsky.social Princeton computer science prof. I write about the societal impact of AI, tech ethics, & social media platforms. https://www.cs.princeton.edu/~arvindn/
BOOK: AI Snake Oil. https://www.aisnakeoil.com/
Fenner Tanswell @fennert.bsky.social Philosopher of Mathematics and Logic working at TU Berlin. Also into epistemology, science, Xphi and the philosophy of extinction. Flightfree and carfree. fennertanswell.com
Pieces of Mathematics @piecesofmathematics.com I am Francesco Macrì, a passionate, self-taught, and self-directed learner of mathematics.
Website: https://www.piecesofmathematics.com
Mathstodon: https://mathstodon.xyz/@pieces_of_mathematics
ProfKeithDevlin @profkeithdevlin.bsky.social Mathematician (Emeritus Stanford), author and avid cyclist. For many years "The Math Guy" on NPR. I write an edited monthly blog for the Math. Assoc. of America called "Devlin's Angle", often about #mathed: https://maa.org/columns/devlinsangle/
Valeria de Paiva @valeriadepaiva.bsky.social Logician, category theorist, semanticist. Likes to understand life mathematically, please.
Joshua Grochow @joshuagrochow.bsky.social Research: TheoryCompSci, pure math, complex systems
Other: climate; covid; equity, inclusion, & accessibility
Assoc. Prof. @ CU Boulder Comp. Sci. & Math
Views my own
@joshuagrochow@mathstodon.xyz (& prev twitter)
https://home.cs.colorado.edu/~jgrochow
Doctor Logic @saraluckelman.bsky.social #Logician, #Onomast, #Medievalist, #AcademicMama, #Author, #Immigrant, founder of SFFReviews.com and @EllipsisImprint. Co-president of @ducu. Own views. Robot.
Zanzi Tangle @zanzi.bsky.social I research programming languages and turn Category Theory into code
Gihan Marasingha @gihanmarasingha.bsky.social Mathematician. Proof assistants. He/Him.
Devon, England
Swarat Chaudhuri @swarat.bsky.social Professor of Computer Science at UT Austin and Visiting Researcher at Google Deepmind, London. Automated Reasoning + Machine Learning + Formal Methods. https://www.cs.utexas.edu/~swarat
Clément Canonne @ccanonne.github.io Senior Lecturer #USydCompSci at the University of Sydney. Postdocs IBM Research and Stanford; PhD at Columbia. Converts ☕ into puns: sometimes theorems. He/him.
@myvardi.bsky.social @myvardi.bsky.social 
Simone Picenni @spicenni.bsky.social Postdoc @ ILLC/UvA
Logic | Formal semantics | Theories of Truth & Truthmaking | HOL Light user
Support the Human Right To Science!
Bartosz Milewski @bartoszmilewski.bsky.social Physicist, mathematician, programmer.
"The Dao of Functional Programming"
Regularly updated work in progress. PDF on GitHub:
https://github.com/BartoszMilewski/DaoFP/blob/master/DaoFP.pdf
Kiran @kirancodes.me Programming Languages Researcher; in NYC
https://kirancodes.me
Conor Titania Mc Bride @pigworker.bsky.social I'm a trans-femme poly
Computer Scientist.
Apartheid target. Cardiac outpatient. Hatstand owner. Tomato grower. Doctor Who fan.
I do not trust this place.
@pigworker@types.pl on fedi
Don't call me Sir. Do call me "her" personally, or "them" professionally.
Formally proved nerd @lostcrab.bsky.social Interests: PL design, type systems, program synthesis, optimization, formal verification, model checking, Coq, Lean, ...