Defend Public Health @defendpublichealth.bsky.social An organization of thousands of public health professionals dedicated to defending evidence-based public health.
https://www.defendpublichealth.org
Zohran Kwame Mamdani @zohrankmamdani.bsky.social Mayor of New York City
Parking Reform Network @parkingreform.org An org with a mission to educate the public about the impact of parking policy on housing, climate, equity, and traffic.
https://linktr.ee/parkingreform
Strong Towns @strongtowns.org We're changing *everything* about the North American pattern of development. Become a member today! strongtowns.org/membership
Council for Canadian Urbanism @canurbanism.bsky.social The Council for Canadian Urbanism #CanU is a national organization of leading multi-disciplinary urbanists championing better city-building coast-to-coast! linktr.ee/canurbanism Conseil pour l'Urbanisme Canadien
Jay Pitter @jaypitter.bsky.social Award-Winning Placemaker (25+ North American Cities). Author. Speaker. Urban Planning Adjunct Professor. Subdivided Co-Editor. Two Book Deal w/ Penguin Random House Canada. Hip Hop & a lil Punk Rock. Hopeful.
Adam Conover @adamconover.net "Unlikable woke comedian" - the Daily Mail
Oliver Moore @oliver-moore.bsky.social Deviant pedestrian. I’m bullish on cities, opposed to fascism and write editorials for The Globe and Mail. Never 51. @moore_oliver at the bird site, which I've mostly left. Will try to respond via omoore@globeandmail.ca. Header pic by Mervyn Sequeira
Streetsblog USA @usa.streetsblog.org Covering the movement to end car dependency and make America better for walking, biking, transit and more. 
Clarence Eckerson Jr./Streetfilms @streetfilms.bsky.social The OG Urbanist Youtuber! Prolific Streets Documentarian since late 1990s. All good things: biking, walking, transit, open streets & LTNs! Visit www.streetfilms.org for more!
All tweets only represent my personal point of view.
Sherry Pagoto, PhD @drsherrypagoto.bsky.social Professor, psychologist, NIH-funded scientist. Digital health, social media, healthy lifestyle. Past prez @behavioralmed. Occasional writer about relationships and health.
Jeremy Faust, MD @jeremyfaust.bsky.social ER doctor at Brigham and Women's in Boston, Harvard Medical School.
Words in: NY Times, WaPo, Atlantic, Slate, CNN. I'm also "editor-in-chief" of MedPage Today and write "Inside Medicine" on Substack:
https://insidemedicine.substack.com/subscribe 
Sam @samd.bsky.social https://bettercities.substack.com/
Better cities and transit are possible 🚇
#1 Congestion pricing stan
#1 RFK Jr. hater
anti-slopulist
Peter Gleick @petergleick.bsky.social Climate, water, birds, bluegrass mandolin. Member US National Academy of Sciences, MacArthur Fellow, Carl Sagan Prize, author of The Three Ages of Water (2023) and When the Well Runs Dry (2026). Email me at pgleick (at) gmail.
Coach House Books @coachhousebooks.bsky.social Coach House Books is an independent Canadian publisher of poetry, fiction, drama & nonfiction. Good on paper since 1965. https://linktr.ee/chbooks
Linda McQuaig @lindamcquaig.bsky.social Author, journalist, supporter of the oppressed (& animals on factory farms), detractor of corporate shills posing as "populists."
Latest book: (with Neil Brooks) Cancelling Billionaires Before They Cancel Us: The Urgent Case for a Wealth Tax
Matthew Herper @matthewherper.bsky.social I write about medicine at STAT. This is biology's century. Every data point has a face.
Toronto Railway Museum @torailwaymuseum.bsky.social The Toronto Railway Museum is located in the historic John St. Roundhouse National Historic Site. Open year-round to visitors interested in Toronto's rail heritage. 
Tom Wallach @mdwallach.bsky.social World’s largest pediatrician. Dirtbag Mr. Rogers. Division Chief of Pediatric GI at SUNY downstate. hater of ALS. only represent me. he/him
Frank Conniff @frankconniff.bsky.social Writer, Comedian, TV’s Frank
donoteat @donoteat.bsky.social i'm back bitches
podcasting @wtyppod.bsky.social
Evan Bernick, a finite mode with a smol hooman and a lorg floof @evanbernick.bsky.social Associate Prof at Northern Illinois University College of Law. Constitutional law, criminal law, abolition, philosophy, hoops, video games, puppies (esp. Argo the Floof). Probably nicer than you’ve heard. He/him.
Tina Smith @smith.senate.gov Mom, wife, daughter, and loving but distracted friend. U.S. Senator for Minnesota. Prefers window seats, donuts and MN beer (all together when possible) ✈️ 🍩🍺
Jeff (Hot Type) Jarvis @jeffjarvis.bsky.social Visiting prof @Stony Brook; fellow @Montclair State; emeritus prof @CUNY's Newmark School of Journalism. Co-host: Intelligent Machines, AI Inside. Author of Hot Type, The Gutenberg Parenthesis, Magazine, available at: https://jeffjarvis.com
Nghi Vo @nghivo.bsky.social Spec fic writer. It probably didn't happen, but it should have, could have or might have. Represented by Fox Literary. Cis, queer, she/her.
European Research Council (ERC) @erc.europa.eu European Research Council, set up by the EU, funds top researchers of any nationality, helping them pursue great ideas at the frontiers of knowledge. #HorizonEU
Isaac Rowlett @isaacrowlett.bsky.social Exploring Wisconsin’s past, present and future
He/him
Views = mine only
@stevemartin35.bsky.social @stevemartin35.bsky.social 
Monica H Green @monicamedhist.bsky.social Medhist=medieval + medical history (https://hcommons.org/members/mhgreen2/). Focusing on Global Health. Open-access: The Black Death: The Medieval Plague Pandemic through the Eyes of Ibn Battuta, https://works.hcommons.org/records/n3h76-6dg78.
On the Media @onthemedia.bsky.social A weekly radio show and podcast on all things media produced and distributed by WNYC Studios — onthemedia.org
Hosted by @brookegladstone.bsky.social & @micahloewinger.bsky.social
c0nc0rdance @c0nc0rdance.bsky.social Molecular biologist from Texas, here to share my meanderings on nature, science, history, politics, and zombies. Long threads a specialty.
Mike Elk @mikeelk.bsky.social Emmy-nominated labor reporter @PaydayReport often in 🇧🇷. Alum: @Guardian! Yinzer @UEunion fam. Autistic ⚾️ Jew. Falo Português e Pittsburghese. Melk@PaydayReport.com
Ann Leckie @annleckie.com Author of the award-winning Ancillary Justice. Lives in St Louis.
Discontinued Foods! @discontinuedfoods.bsky.social Your home for all those culinary delights, anomalies, and misfires that live on only in our memories...Still slowly but surely migrating over the over 1,000 foods I covered on Twitter, so if you don't see a favorite here yet, stay tuned!
Nereide @drnereide.bsky.social Physicist interested in Astrophysics and Particle Physics| Research in Math and Science Edu| Math and Science Writer| Teacher and Teacher Trainer
My blog: https://www.tutto-scienze.org/
More about me: https://www.linkedin.com/in/annarita-ruberto-3970507/
Ian Carrillo @iansociologo.bsky.social Sociologist - he/him/his
Author - The Business of Racism: Labor & Environment in Brazil's Racial Capitalism
https://dukeupress.edu/the-business-of-racism
Co-editor - Environmental Sociology Now
https://www.ucpress.edu/books/environmental-sociology-now
Catherine McKenna @cathmckenna.bsky.social 🌱 CEO, Climate & Nature Solutions; Chair UN Net Zero.
🇨🇦Former Minister of Environment & Climate
🏃♀️Author, Run Like a Girl
Order your copy today ⬇️
www.catherinemckenna.ca
📩 contact@climateandnature.com
Doug Gordon @brooklynspoke.bsky.social Co-author, "Life After Cars,” co-host, The War on Cars. Runner, Disney parks fan (he/him)
Taking a break for the summer.
https://www.lifeaftercars.com
Donate to my 2027 run in support of PPMD:
https://donate.parentprojectmd.org/fundraiser/7001403
Andrew Hipp @andrewlhipp.bsky.social Plant systematist, herbarium director, ASPT president, naturalist, in the Chicago suburbs; posts reflect my views, not my employer's.
2024 book: Oak Origins... check it out:
https://press.uchicago.edu/ucp/books/book/chicago/O/bo236998258.html
Tracy Jan @tracyjan.bsky.social Senior editor @propublica.org.
Former Washington Post deputy health & science editor and race & economy reporter. Former Boston Globe national political reporter.
https://www.propublica.org/people/tracy-jan
Library of Congress @librarycongress.bsky.social Official account of the world’s largest library. Explore collections & plan a visit. All Library accounts: https://loc.gov/connect
TTCriders @ttcriders.bsky.social A public transit advocacy group. We're transit users who want better public transit in Toronto.
🚍🚇🚊✊
Not affiliated with the TTC.
www.ttcriders.ca
#KeepTransitMoving
Uytae Lee @uytaelee.bsky.social I make videos about our cities at https://www.youtube.com/@AboutHere
Richard Van Noorden @richvn.bsky.social Features editor, Nature. E: r⟦dot⟧vannoorden⟦at⟧nature⟦dot⟧com or richardvannoorden⟦at⟧protonmail⟦dot⟧com. Signal: richvn.01 .
Co-op Housing Federation of BC @chf.bc.ca CHF BC is the voice of housing co-ops in British Columbia. We represent 260 housing co-ops with more than 14,000 co-op homes.
www.chf.bc.ca
Ontario Co-op Housing Members Alliance @oncoophmalliance.bsky.social United for fair Act reform & oversight. Protecting member rights & ensuring accountable, thriving co-op homes. 🏠
Kathleen Bachynski @bachynski.bsky.social Associate Professor of public health at Muhlenberg College. History, ethics, epidemiology, sports, injury prevention.
Colson Whitehead @colsonwhitehead.com Release the bats
Dr. Heather Hinam 🍁 🇨🇦 @secondnaturemb.bsky.social Naturalist, writer, artist, and educator with a Ph.D. in Ecology. I make interpretive signs, illustrations, murals, and books. Sometimes, I chase polar bears and belugas. #scicomm #sciart http://www.discoversecondnature.ca
Adam Kucharski @adamjkucharski.bsky.social Epidemiologist/mathematician. Professor at London School of Hygiene & Tropical Medicine. Author of The Rules of Contagion and The Perfect Bet. Views own.
New book Proof: The Uncertain Science of Certainty available now: proof.kucharski.io
NASA 🔴 Image of the Day (Unofficial) @nasa-daily.bsky.social Regular posts of historical and current NASA "images of the day".
This account is not associated with NASA, but will always post genuine images with full attribution, sourced from www.nasa.gov/image-of-the-day
Managed by 🔴 @redshift.pics
Celeste Ng @pronounced-ing.bsky.social Fiction writer (EVERYTHING I NEVER TOLD YOU, LITTLE FIRES EVERYWHERE, OUR MISSING HEARTS). Science nerd, ex-Clevelander, embarrassingly sincere. Blue canary in the outlet by the light switch who watches over you. she/her. www.celesteng.com
Maya Sen @mayasen.bsky.social Professor, Harvard Kennedy School | Speaking in a personal capacity | https://msen.scholars.harvard.edu/
Movies Silently @moviessilently.bsky.social Silent films and the silent era, same as the birdsite
Bruce Arthur @brucearthur.bsky.social Toronto Star columnist, nice guy, jump shooter. 
Working Class History @workingclasshistory.com History isn't made by kings or politicians, it's made by us: billions of ordinary people. https://patreon.com/workingclasshistory
actual heathcliff comics @realheathcliffs.bsky.social real, actual, unedited heathcliff comics. not affiliated with heathcliff in any way, just a fan.
Karen Campbell @karampbell.bsky.social Professor & Canada Research Chair at Brock University | neurocognitive aging, memory, & attention | mom of 3 | ally | mostly kvetching
Jewish Voice for Peace @jvp.bsky.social Jews for Palestinian liberation & Judaism beyond Zionism. JVP Action is now doing business as JVP, as a 501c4. Our 501c3 work continues in JVP Lab.
https://linktr.ee/jvp
TransitCenter @transitcenter.bsky.social A foundation working to secure a just and sustainable future with abundant transportation options. transitcenter.org
@DUH4Healthcare @duh4healthcare.bsky.social #Medsky,#UniversalHealthcare, #Single-Payer, #HealthEquity. #M4A, #Medicare4AlI, #HealthcareIsAHumanRight,
#Healthcare4All, #HealthcareForAll,
#DemandUniversalHealthcare,
also on FB & Instagram. DUH! No DMs
Rep. Malcolm Kenyatta @malcolmkenyatta.bsky.social Vice Chair, @democrats.org • PA State Rep, 181st District. • @drmatt.kenyatta’s husband
Alondra Nelson @alondra.bsky.social Scholar, author, policy advisor
alondranelson.com
Science, Technology, and Social Values Lab
https://www.ias.edu/stsv-lab
Books: Auditing AI, The Social Life of DNA, Genetics and the Unsettled Past, Body and Soul, Technicolor
They Might Be Giants @tmbg.bsky.social Official. Our new LP The World is To Dig is here at TMBGshop.com. Multi-night stands in Boston then on to Austin Dallas Houston Minn St Paul DC and beyond www.TMBG.com for tickets.
Max Kozlov @maxkozlov.bsky.social science reporter covering biomedical research at Nature | proudly Ukrainian 🇺🇦
maxkozlov.com
signal: mkozlov.01
Kai Ryssdal @kairyssdal.bsky.social Dad, husband. IPAs. Soccer referee, trail runner, mountain biker. Veteran.
Paris Marx @parismarx.com 💥 PREORDER MY NEW BOOK HYPERSCALE 💥
🎙️ @techwontsave.us
📬 https://disconnect.blog
📖 https://hyperscalebook.com
Zack Labe @zacklabe.com Climate Scientist at @climatecentral.org | PhD | Passionate about improving science communication through data-driven stories | Harrisburg, PA | https://zacklabe.com/
Views, thoughts, and opinions expressed here are only my own.
Annie Waldman @anniewaldman.bsky.social Covering health care @ProPublica. Signal: 347-549-0332. Email: annie.waldman@propublica.org. (Also #COYS)
Esther Choo @choo.bsky.social Emergency Medicine Doc | Mom | Health Services Research | Public Health
Preserving a modicum of peace where I can. If engagement is not respectful, I will block.
Kristian G. Andersen @kgandersen.bsky.social Infectious diseases & genomics. Immunologist in (voluntary) exile. Minimal sarcasm. Fierce HOA (Hater of Acronyms). Personal account - opinions expressed are my own and not those of my employer.
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/
T. Ryan Gregory 🇨🇦 @tryangregory.bsky.social Back off man, I'm a scientist. Professor. Evolutionary biologist. Genome size, junk DNA, applied evolution, sci comm, philosophy of science. Also political stuff. Plus jokes. Onions have 5x more DNA than you do (not a joke). He/him.
Helen Branswell 🇨🇦 @helenbranswell.bsky.social I cover infectious diseases for STAT (www.statnews.com). 2020 Polk winner. Nieman '11. She/her. I write about H5N1 (in all species), Covid, polio, flu, Ebola, RSV, mpox, STIs. Send me news tips on Signal: HBranswell.01
American Public Works Association @apwa.org Advancing Quality of Life for All! APWA is dedicated to providing training and education to companies and individuals in public works.
American Public Television @ampublictv.bsky.social The leading syndicator of high-quality, top-rated programming to the nation’s public television stations. APTonline.org
American Public Transportation Association @apta-info.bsky.social APTA leads public transportation in a new mobility era, advocating to connect and build thriving communities.
AIDPH - American Institute of Dental Public Health @aidph.bsky.social AIDPH serves as a platform for creative programming that centers health equity as a cornerstone of oral health education and training. We help organizations implement innovative and strategic approaches to education and scientific programming.
Michael Ian Black @michaelianblack.bsky.social 9 years in the NFL. 2 rings. #9years2rings
U.S. Consumer Product Safety Commission @cpsc.gov Your U.S. Consumer Product Safety Commission. Product safety info, data, and recalls. Standing for safety since 1972. Official account of the USCPSC. HQ: Bethesda, MD.
Subscribe for recall emails on CPSC.gov.
Report unsafe products on SaferProducts.gov
Natalie Wynn @contrapoints.bsky.social Ex-philosopher, ex-Tweeter.
Email: info@contrapoints.com
George Hahn @georgehahn.com Humorist, urbanist, satirist, sartorialist, minimalist, soloist, bicyclist, mid-century modernist on no one’s to-do list.
Philip Loring @philiploring.com Anthropologist and storyteller. Global Director of human dimensions science @nature_org. Author: FINDING OUR NICHE. Stubbornly optimistic that radical change is closer than we think. Opinions mine (but science-based). he/they 🏳️🌈
UrbanToronto @urbantoronto.bsky.social Toronto's premier hub for #Architecture, #Development, #Transit & #RealEstate news. 
Trevor Heywood @metroscapes.ca Not all those who wander are lost. I explore Metroscapes, where natural and built environments collide.
🌐 https://metroscapes.ca
▶️ https://youtube.com/@metroscapes
Baltimore Beat @baltimorebeat.bsky.social Baltimore Beat is the city’s paper of record. A Black-led, Black-controlled nonprofit newspaper and online media outlet for all of Baltimore.
DONATE: http://baltimorebeat.com/neighborhood
Maria Popova @popovaprof.bsky.social Political science professor at McGill 🇨🇦⚜️Hiram Mills Chair; Co-Director, Jean Monnet Centre Montreal;
Russo-Ukrainian war; Rule of law, (anti)corruption; European politics 🇺🇦 🇧🇬 🇪🇺. Opinions mine.
https://linktr.ee/popovaprof
Libby Larson @libby-larson.bsky.social Environmental/climate scientist, but mostly here on my personal account to explore other interests: art, crafts, history, linguistics, local (DMV) politics.
AAUP @aaup.org The American Association of University Professors champions academic freedom, advances shared governance, and organizes faculty to ensure higher education's contribution to the common good.
aaup.org
Stephanie M. Lee @stephaniemlee.bsky.social Senior writer at @chronicle.com, writing about scholarship, scholars, and society. stephanie.lee@chronicle.com / Signal: stephaniemlee.07 / stephaniemlee.com / San Francisco
UFT @uft.org This is the official account for the United Federation of Teachers. We proudly represent NYC public school educators, nurses, childcare providers and other professionals.
BK. Titanji @boghuma.bsky.social Physician Scientist MDPhD
Infectious Diseases
Academic Medicine
Global Health
Science Communicator
Posts are my opinions, not my employer's and not medical advice
I bet on myself and double down
https://substack.com/@bktitanji
Katja De Bock @katjadebock.bsky.social National Film Board of Canada publicist.
Interested in documentary and animation, news and the environment.
Based in Vancouver, B.C.
FlemishCat on Letterboxd & Peliplat.
National Canadian Film Day @canfilmday.bsky.social Join us April 15, 2026 for the next annual National Canadian Film Day
#CanFilmDay is presented by REEL CANADA.
Brockton Writers Series @brocktonwriters.bsky.social A literary series featuring diverse writers. The 2nd Wednesday of every other month, at Glad Day & livestreamed on YouTube. Funded by Toronto Arts Council and Access Copyright.
brocktonwriters.com
Billy Bragg @billybragg.bsky.social Still waiting for the Great Leap Forward
Fridays for Future @fridaysforfuture.bsky.social Don't stop believing.
Abdel Abdellaoui @dr-appie.bsky.social Complex Trait Genetics | Population Genetics | Evolutionary Genetics
https://scholar.google.nl/citations?user=hsyseKEAAAAJ&hl=en
Dr. Jonathan N. Stea @jonathanstea.bsky.social 🇨🇦 Clinical Psychologist. Adjunct Assistant Professor at University of Calgary. Author.
New book: https://a.co/d/06FboJTN
Newsletter: https://open.substack.com/pub/jonathanstea
University of Calgary: https://profiles.ucalgary.ca/jonathan-n-stea
emohn @emohn.net It’s Great to Be Alive!
Kentuckian. Environment/climate/energy guy. Hiker, RVer, National Park frequenter, SCCA Hillclimb racer, sober, live music fanatic.