William Azaroff for Mayor @wazaroff.bsky.social Community housing leader & city builder.
Max Fawcett @maxfawcett.bsky.social Lead columnist for Canada's National Observer.
Also: Mariners fan, crypto skeptic and descendant of Canada's worst prime minister (no, not him)
Alexander Kasprzyk @amkasprzyk.bsky.social https://kasprzyk.work
Algebraic Geometry • Combinatorics • Mirror Symmetry • Machine Learning
Mathematician at the University of Warwick.
Editor-in-Chief for “Experimental Mathematics”.
Member of EPSRC’s Math Strategic Advisory Team.
Nolan Hicks @ndhapple.bsky.social Examining how we make passenger rail better (electric/modern) for NYU-Marron. Prev: NY Mag, NY Post-Metro, NYDN. Hook’em🤘. 🏳️🌈. Tips? bynolanhicks@gmail.com; Signal/WhatsApp.
Catelli @catelli.bsky.social Consumer of beer, smoker of cigars. Camping and cycling
IT guy, from Cambridge, Ontario
Handle is an old nickname, it means "looked like a wet spaghetti noodle when running down the basketball court"
Uses Swears 10% of the time
🇵🇸Tim Henke (tɪm 'ɦɛŋ.kə) @timhenke.bsky.social 🇳🇱 Postdoc in Quantisation of moduli spaces, QFT, TQFT & CFT, Algebraic Geometry, Differential Geometry, moduli geometry – Masters in: Maths/Physics/Logic – Help me learn 🇵🇹🇩🇰🇮🇹🇩🇪🇫🇷 by talking to me! (he/him)
Forse tu non pensavi ch'io löico fossi
Daniel Munro @dkmunro.bsky.social Director, Research & Innovation, Actua.
Co-Director, Shift Insights.
Senior Fellow, Munk School.
Recovering political philosopher.
MIT PhD. Innovation. Science policy. Ethics. Skills. Space. JAWS. Running. Chronic napping. 🇨🇦
www.shiftinsights.ca
@mrocek.bsky.social @mrocek.bsky.social 
Kevin Costello @kevincostellomath.bsky.social Mathematical physicist, parent, dog owner, very amateur musician
Emily Hamilton @ebwhamilton.bsky.social Excuse me, do you have a moment to talk about zoning?
Steven Strogatz @stevenstrogatz.com Mathematician, writer, Cornell professor. All cards on the table, face up, all the time. www.stevenstrogatz.com
Bartley Kives @bkives.bsky.social Reporter. Author. Hiker. Paddler. Eater. 
David Bessis @davidbessis.bsky.social Rogue mathematician
https://davidbessis.substack.com/
Gro-Tsen @gro-tsen.bsky.social Eclectic mathematician, irritable geek, boring homosexual, procrastinator extraordinaire, overworked dilettante and full-time human being. I post in fr&en.
Maggie Helwig @maggiehelwig.bsky.social She/they. Sometimes I do conceptual art. Sometimes I don't. Gangster pastor, allegedly.
"The only way that we, the small and the ordinary, might survive in any decent way, is if we learn to take care of each other."
Norm Di Pasquale🇨🇦 @normsworld.bsky.social Chair of NoJetsTO. Ford is trying to ram jets down our throat, sign the petition at NoJetsTO.com!
Joël León @joelleondanis.bsky.social Caraqueño en Toronto. Architect, researcher, plant caretaker. 
Cat Poníčková @louhip.northsky.social Your obnoxious pony, also on fedi: @poni@ak.kawen.space.
(Actually generally much more on fedi tbh.)
Prague 🇨🇿, public transit, "urbanism" (complaining), trains, some cloud computing and Linux, cats, little of everything else.
Bilal Akhtar 🇨🇦 @itsbilal.bsky.social Building a great database. Advocating for a better Toronto and more housing. And a lot of things in between.
Mike Eliason @holz-bau.bsky.social climate adaptive social housing developer
architect for car-light climate forward cities w/ low carbon + passivhaus buildings, social housing
Author, 'Building for People' (Island Press, 12/2024: https://islandpress.org/books/building-people)
Rory Johnston @roryjohnston.bsky.social oil market researcher
founder of https://CommodityContext.com
former bank economist
markets, code, barbecue
Bryn Davidson - Lanefab @lanefab.com A beautiful home,
in a healthy city,
on a thriving planet
Lanefab Design / Build
Oori Architecture
B.Eng M.Arch
www.Lanefab.com
Vancouver BC
#ThickWallsAreSexy / #SingleStair / #ElectrifyEverything / #Passivhaus
William Skudlarek @willskud.bsky.social 💼 - researching all things egress and other fun building code stuff as Policy Analyst at the Center for Building in North America (centerforbuilding.org)
✉️ - william[at]centerforbuilding[dot]org
📍- Chicago
I post about 🏗️, 🏠, 🚊, 🌐, and other random stuff
Joshua Hind @joshuahind.bsky.social "It's hard to say, it's sad but true, I'm kinda dumb and so are you."
Jennifer Alexander Etobicoke Centre Council Candidate @thismomroars.bsky.social Pedestrian Safety advocating led to safe schools/school nutrition which led to municipal politics/community building/complete streets/community land trusts which all helped to lead to jenalexander.ca
Gabe Blanc @gabeblanc.bsky.social Hey, Toronto!
Former candidate for Toronto City Council in Ward 11 University–Rosedale.
gabeforunirose.ca
Adam Gebrian @gebrian.bsky.social Ex Architect
Zachary Schrag @zacharyschrag.bsky.social Professor of History, George Mason University. Currently researching history of the Dulles Corridor Metrorail Project. Views my own.
zacharyschrag.com.
historyprofessor.org
https://orcid.org/my-orcid?orcid=0000-0003-1420-551X
Julie Bogdanowicz @jbwicz.bsky.social Architect OAA. Senior civil servant - City of Toronto - City Planning - Urban Design. Permanent helmet head, all-season cyclist. Mother of two daughters, instantly radicalized after trying to move through the city with a stroller. All opinions my own.
Mac the squirrel :) @macsquirelera.bsky.social I like trains. Studying computational linguistics at the university of Stuttgart
A little blog about public transit and my life: https://macsquirrelera.substack.com
TTC Platform Doors @ttcdoors.bsky.social Over 1000 have died at track level on the TTC, time to do something about it. Platformdoors.info
Sean Galbraith @plannersean.bsky.social Urban planning shit posting, disc golf, assorted other nonsense and garbage. @plannersean on Twitter 
Terence Tao @teorth.bsky.social Mathematician at UCLA. My primary social media account is https://mathstodon.xyz/@tao . I also have a blog at https://terrytao.wordpress.com/ and a home page at https://www.math.ucla.edu/~tao/
Jun Nogami @jnyyz.bsky.social All season cycling enthusiast, bike dad, bicycle advocate. Professor
@UofTMSE https://jnyyz.wordpress.com/
FastTrackTO @fast-track.to Home of the 10-point plan to save Toronto’s streetcar system.
————————————
https://fast-track.to/ 🌐
RJN @nadeaushow.bsky.social Urban planner: intensification, land/housing economics and zoning reform. Maritimer in exile, repentant car nut.
Robinson Meyer @robinsonmeyer.bsky.social I’m the founding executive editor of Heatmap News, a contributing Opinion writer for The New York Times, and the cohost of the Shift Key podcast.
📍NYC
Francis Fukuyama @frankfukuyama.bsky.social Drone pilot, cabinetmaker, and fan of classic social theory.
Owner of @americanpurpose.bsky.social
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 |
Tom Ruhig @ruhig.bsky.social Interaction Designer | Toronto | “Guerrilla Satirist” — The Guardian
Henrik Bechmann (Toronto) 🇨🇦 @henrikbechmann.bsky.social Retired software dev.
I sometimes discuss City of Toronto budget design and support issues.
IMO government is a collective enterprise, and should be fully transparent and forcefully managed for all, and for the health of the planet.
John C. Baez @johncarlosbaez.bsky.social Mathematical physicist
Eric Very @ekvery.bsky.social Writing at www.brockton-history.ca, jogging, coffee, dad.
Working on the waterfront.
Luke LeBrun @lukelebrun.ca Investigative journalist
llebrun[at]thewatchdog[dot]ca | @thewatchdog.ca
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
JackTatt 🇨🇦 @jacktatttran.bsky.social MASc. Graduate from UofT CivMin who researched public transport fare and service integration @TAL_UofT.
Like trains and buses and trams and people. Urban Transit Planning. I ❤️ CANDU nuclear.
James Taite @jamestaite.bsky.social Stonemason in Ottawa, Canada.
Anne Marie Aikins @femwriter.bsky.social Former chief spox, journalist, and a variety of other careers. Had some books published & love to write. Now my own boss at AMA Communications. Toronto is home. Friends call me AMA
Alexander Luckmann @aluckmann.bsky.social PhD candidate, modern German architecture | religion, preservation, environment | he/him views mine | New Orleans (for now)
With jazz and conversation
From the foot of Mount Belzoni
Alon (they/them) @alonlevy.bsky.social Transit researcher in Berlin. Lived in Tel Aviv, Singapore, the Riviera, New York, Providence, Vancouver, Stockholm, Paris. https://pedestrianobservations.com/ http://patreon.com/alonlevy alon@pedestrianobservations.com @alon@mastodon.social ↙️↙️↙️
Eric Goldwyn @egoldwyn.bsky.social NYU Marron | transitcosts.com | All Mets Grid | Drive the foreign
Toronto Cycling and Pedestrian Projects @cyclingpedestrian.cityof.toronto.ca News and updates from the City of Toronto's Cycling and Pedestrian Projects unit. Email cycling@toronto.ca for inquiries. Social Media Terms of Use: toronto.ca/socialmedia.
Kevin Rupasinghe @kevinrupasinghe.ca Scarborough Southwest City Council candidate. Cities Engineering @ UofT. Formerly Cycle Toronto & RaBIT & Unlock Democracy. #Ward20 #ScarbTO
Josh White @jwhiteyvr.bsky.social 🍁 General Manager Planning, Urban Design & Sustainability and Director of Planning at City of Vancouver 🍁
Danielle Kurtzleben @titonka.bsky.social NPR White House correspondent. National Murrow Award Winner. Former Vox, USN&WR. Tariff explainer. Masculinity politics expert. Native Iowan. Jesus freak. Girlboss. Real piece of work.
daniellekurtzleben.substack.com
Alexandra Lange @langealexandra.bsky.social Design critic, author, 1970s, malls, kids, Marimekko // more at www.alexandralange.net
@evalpavement.bsky.social @evalpavement.bsky.social An account to discuss pavement and related infrastructure.
@edgardoblock.bsky.social
George Monbiot @georgemonbiot.bsky.social Ungainly on land
Emmett Macfarlane 🇨🇦 @emmettmacfarlane.com Professor of political science. Author. Dad.
Constitutional law, rights, governing institutions, and Canadian politics.
Books: Legislating under the Charter; Constitutional Pariah; Governing from the Bench
Bobby Fijan @bobbyfijan.bsky.social Building Housing for Families
Edwin Heathcote @edwinheathcote.bsky.social FT Architecture and Design critic. Author of ‘On the Street: In-Between Architecture’. Jeez. Another platform. @financialtimes.com
Zack Beauchamp @zackbeauchamp.bsky.social Senior Correspondent at Vox covering the crisis of global democracy. Author of The Reactionary Spirit, a book on that topic, and a '25-'26 distinguished visiting fellow at the University of Pennsylvania's Perry World House.
Uytae Lee @uytaelee.bsky.social I make videos about our cities at https://www.youtube.com/@AboutHere
Jason Markusoff @markusoff.bsky.social I write and yak for CBC in Calgary. DMs open, Signal, WhatsApp, and such
jason.markusoff@cbc.ca
Sacha @sashyenka.com 📍 Barcelona by way of Lisbon, originally Denver
Portuguese language specialist 🇵🇹🇧🇷
Posts a mix of personal, twitch community dealings, & interests (linguistics, urbanism, etc mostly in replies)
My videos, links, & color analysis: https://linktr.ee/sashyenka
Friends and Families for Safe Streets @ffsafestreets.bsky.social We are people whose loved ones were struck and killed on #TODeadlyStreets, and injured crash survivors. We work to end Road Violence in Toronto and offer monthly Peer Support meetings. More info: www.ffsafestreets.ca + http://linktr.ee/ffsafestreets
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
Dave @davescrivener.bsky.social A list of adjectives, I guess
Laine Johnson @lainejohnson.bsky.social Candidate for re-election as Councillor for College Ward in the City of Ottawa.
Hudson (TheFlyingMoose) @hudsonyuen.bsky.social TheFlyingMooseCA on YouTube :)
David Rider @dmrider.bsky.social Toronto-based journalist
Bill McKibben @billmckibben.bsky.social Founder 350.org and Third Act, author The Crucial Years on substack https://billmckibben.substack.com/
Author of 21 books, beginning with The End of Nature
Marta O'Brien @archhistory.bsky.social Architectural historian. Passionate pedestrian & former cyclist, so road safety! City & provincial politics. Lifelong renter in Toronto.
Toronto Society of Architects @tosoarch.bsky.social Established in 1887 we are a non-profit organization bringing people together to discuss, learn and explore Toronto's built environment.
Leah Stokes @leahstokes.bsky.social Professor of climate + energy policy at UCSB. Alumni of MIT, Columbia and UToronto. Hosts "A Matter of Degrees" podcast. Cuts carbon pollution! Proudly 🇨🇦 Gardener 🌱 leahstokes.com; Newsletter: electricnotes.news
Esteban Ortiz-Ospina @eortizospina.bsky.social Executive co-director @ourworldindata.org
Fiona Spooner @spoonerf.bsky.social Data Scientist @ ourworldindata.org
Interested in environmental change, biodiversity and health.
Hannah Ritchie @hannahritchie.bsky.social Deputy Editor, Our World in Data
Senior Researcher, University of Oxford
Climate, energy, environment, all things data.
VassB @vassb.bsky.social policy designer + writer
I run the Canadian Shield Institute (@canadianshieldinstitute.ca), where we make sovereignty make sense.
Subscribe to our newsletter, The National Interest.
John Lansing @pipedreaming.bsky.social Posting thoughts on plumbing/building codes, engineering design guides, water and nutrient cycles, often with regional and historical insights (personal account)
Director of Plumbing Standards Research and Development
john.lansing@centerforbuilding.org
UrbanToronto @urbantoronto.bsky.social Toronto's premier hub for #Architecture, #Development, #Transit & #RealEstate news. 
Noahpinion @noahpinion.blogsky.venki.dev Economics and other interesting stuff
Automated feed of https://www.noahpinion.blog/, discover more at @blogsky.venki.dev
Jesse D. Jenkins @jessedjenkins.com Macro-energy systems engineering, optimization & policy. Associate professor at Princeton University. Leads the ZERO Lab. Co-hosts SHIFT KEY podcast. Time100 Next & TIME100 Climate honoree. More at linkedin.com/in/jessedjenkins & zero.lab.princeton.edu
Jonathan English @englishrail.bsky.social 
Tristan Downe-Dewdney @tristantoronto.bsky.social 
Dr. Maryam K., @maryamization.bsky.social I had 8603 tweets on the bird site - I miss them. Some of them were bangers.
Here for #MathTwitter. Ask me about moonshine (the math, not the alcohol). Buy me a coffee: https://revolut.me/maryam94hv
Jordan Ellenberg @jsellenberg.bsky.social Mathematician, writer, Orioles fan, Wisconsinite, cargo shorts dad
Grant Sanderson @3blue1brown.com Math videos
Barbara Fantechi @barbarafantechi.bsky.social Mathematician, cis woman, bi, het married, parent of adults. Loud in the physical and metaphorical sense. I do not use AI.
https://marginalnotesmaths.blogspot.com
Nalini Joshi @monsoon0.bsky.social Mathematician, wife, mother, addicted to math
Francis Su @mathyawp.bsky.social I post mainly about math, and what it means to be human. Professor, writer, truth & grace seeker. Former MAA president. Opinions my own. Book: Mathematics for Human Flourishing (2020) https://amzn.to/3CLGCA5
Alison Gopnik @alisongopnik.bsky.social Cognitive scientist, philosopher, and psychologist at Berkeley, author of The Scientist in the Crib, The Philosophical Baby and The Gardener and the Carpenter and grandmother of six.
Timothy Gowers @wtgowers.bsky.social Mathematics professor at Collège de France and fellow of Trinity College Cambridge.
Sean Carroll @seanmcarroll.bsky.social Physics, philosophy, complexity. @jhuartssciences.bsky.social & @sfiscience.bsky.social. Host, #MindscapePodcast. Married to @jenlucpiquant.bsky.social.
Latest books: The Biggest Ideas in the Universe.
https://preposterousuniverse.com/
Daniel Litt @littmath.bsky.social Assistant professor (of mathematics) at the University of Toronto. Algebraic geometry, number theory, forever distracted and confused, etc. He/him.
Steve Munro @swanboatsteve.bsky.social A long-standing transit activist/commentator since 1972. Blogs at http://stevemunro.ca since 2006. Winner of the 2005 Jane Jacobs Prize and 2024 CUTA Excellence Award.
Neil Saravanamuttoo @neilsara.bsky.social Ottawa Mayoral Candidate
Substack: the 613
Podcast: Better Ottawa
Polling Canada @canadianpolling.bsky.social Your Canadian Public Aggregator For Polling, Data, and Other Related Canadian Content // 338Canada Contributor // Consider Supporting: http://ko-fi.com/polling 🇨🇦🇺🇦
Liz Renzetti @lizrenzetti.bsky.social Author, journalist. New book: What She Said: Conversations About Equality. Quill & Packet mysteries with Kate Hilton. Bury the Lead (2024); Widows and Orphans (2025) Linktree: https://linktr.ee/lizrenzetti
Glyn Bowerman @glynbowerman.bsky.social Toronto-based journalist, podcaster, and editor. Cities, Raptors, Leeds United, and two black cats named Hall & Oates.
I make an urban affairs podcast called Spacing Radio: https://podcasts.apple.com/ca/podcast/spacing-radio/id1124077274