Ana Luisa Maffini @anamaffini.bsky.social Researcher • Urban and Regional Planning • Urban Studies • GIS • GeoAI • Spatial Data Science • Python • Complex Systems • Open Science
Nicolas Balcom Raleigh @spacefire.ca Academic researcher in the field of Futures Studies, futures literacy specialist, and international consultant. I help groups explore transformation to innovatively address climate change. Photo credits: Skies and Universes- Uuchu (cfca-fig2-full) & Nasa.
@raphael-dumas.bsky.social @raphael-dumas.bsky.social 
@ericdwilliams.bsky.social @ericdwilliams.bsky.social 
parisian koala @pikamik.bsky.social de lille à melbourne en passant par koeln / glueckstadtkindle 🇫🇷 🇩🇪 🏳️🌈 🇳🇱 🇪🇸 🇦🇺 🇧🇪 // proud refugee from twitter /// living in meanjin, with 🫶 + 🤙
Sebastian Haas 🇪🇺 @seb.haas.partners data, policy | impact entrepreneur | covering soil and landscape‑scale agrobiodiversity
1st 🇪🇺 data altruism organisation for land use data registered
Raed Mansour @raedmansour.com Public health environmentalist, Openlands Board, River Park Natural Area Community Steward, Former Metropolitan Planning Council Senior Fellow & Chicago Department of Public Health Director of Environmental Innovation. ⓥ
www.linkedin.com/in/raedmansour
Philippe-A. Saulnier @saulnier.bsky.social Journaliste🎙️Le 15-18
Radio-Canada
https://ici.radio-canada.ca/ohdio/premiere/emissions/1327/le-15-18
LIA 福振凡 🇺🇸🇨🇳 @fuzhenfan.bsky.social University of Chicago grad
Contract work for the United Nations
Contributor at the Human Rights Campaign, Trevor Project, and the Chicago Board of Elections
Views are my own | Not my employer
Personal account
Hainan -> Chicago
Sarah Moser @sarahkmoser.bsky.social Urban geography professor at McGill University • new cities built from scratch, cultural politics, graphic novels 🇨🇦
Lucia Stein-Montalvo @lsmontal.bsky.social Assistant Professor @ Northwestern University Civil and Environmental Engineering | Adaptive Structures Lab | Shape-shifting mechanics + life-like cities | adaptivestructureslab.com | instagram.com/adaptivestructures_nu 
Dr Chris Macdonald @drchrismacdonald.bsky.social 👨🔬 Scientist | Founder | Author
🏥 Health Tech🍴Better Protein
🏆 40 Under 40 in Science
🥇 Innovation of the Year
📍 University of Cambridge
🎯 On a mission to provide 1M free treatments in 2026
🔗 DrChrisMacdonald.com
Sosthène P.-M. Ung @sostheneung.bsky.social Critical Minerals & Materials in Canada
Shining 💡 on phosphorus 🧪
⚗️ Ph.D. @ C.-J. Li lab 🎓
@Transition Accelerator
@McGill University Chemistry
@Fudan University
@ENSCM Chimie Montpellier
Opinions expressed are my own
sostheneung.com
Anson Stewart @ansonstewart.com Analysis + Research, @conveyal.com | Deputy Director, MIT Transit Lab | Massachusetts / California | Transportation PhD 🚲🚌
Maxime Duchesne @maximeduchesne.bsky.social • Stratège numérique @valplante.bsky.social
• Amoureux de la ville et de la vie
David Hsu @dhsu.bsky.social Professor studying cities, infrastructure, climate, energy, long bike rides, the Boston Celtics, & the drop serve. Personal account representing only me. Likes, reposts ≠ endorsements.
Science HR @sciencehr.bsky.social A career network featuring science jobs in academia and industry.
Visit our platform at www.science.hr
Advait @adv100.bsky.social Energy ⚡️| Infrastructure 🛣️ | Africa 🌍| India 🇮🇳 | MDBs 🌐| https://in.linkedin.com/in/advaitchaturvedi
Derrick Flakoll @dflakoll.bsky.social Policy @BloombergNEF - US and Canadian industrial strategy, trade, regulations, etc. UNC and @harvardkennedy.bsky.social
alum. Category-5 brainstormer. Views are my own, likes & reposts are not endorsements, etc.
Martin @martin-r-m.bsky.social 
Union of Concerned Scientists @ucs.org The Union of Concerned Scientists puts rigorous, independent science to work to solve our planet's most pressing problems.
ucs.org
Insta Science @instascience.bsky.social Your daily dose of science, tech, and cosmic wonder. Please turn on notifications, so you don’t miss a post. 🚀🛰️
#Science #Nature #Technology #Space
Septimus Brown @septimusbrown.com Senior editor at DarlingAxe.com. Novelist at SeptimusBrown.com. Award-winning short-fiction writer. Chaotic good. He/they. 🏳️🌈
@katcrank.bsky.social @katcrank.bsky.social Research Microbiologist in Southern Nevada- interested in pathogens, risk assessment, and global health!
Pam Dugdale @physicsgirluk.bsky.social Physical Scientist. HE/FE college #STEM #Engineering teacher in northern England. PhD. She/her.
Interested in #Sustainability #GreenSkills #Energy #Materials #IndustrialEcology #IndustrialArcheology #EnvironmentalScience
#WomenInSTEM & #Shelties 🐶 No DMs
EEES Clemson University @eees-clemsonu.bsky.social We are the department of Environmental Engineering and Earth Sciences.
We have 3 programs, Environmental Engineering, Biosystems Engineering, and Earth Sciences. Stay connected for job opportunities, scholarships, news, awards, and much more!
Logan Brunner @loganbrunner.bsky.social Risk researcher on urban systems and cascading impacts through infrastructure.
Markonthemaps (Mark Ovenden) @markonthemaps.bsky.social 🌈 Author, broadcaster and lecturer in design, cartography, typography and architecture around public transport. Partner of ND 🌈♾️ person. Pro-Transit 🚆 🚃 🚋 🚟🚌 and ‘in transit’ from X as @markovenden.
Rachel Poretsky @rporetsky.bsky.social Professor in Microbial Ecology, mostly aquatic and wastewater. Public health. Bike/transit enthusiast. LCI. Mom. Vegan. Compact-sized. Brooklyn —> Chicago with lots of stops on the way.
Libation Legacy🍸 @libation-legacy.bsky.social Cocktail and cultural history blogger at http://libationlegacy.wordpress.com
CompactDisc sales on Discogs https://www.discogs.com/seller/DougInDC
Contributor to the Oxford Guide to Spirits & Cocktails
Also, Python/Spark/SQL data analysis and ETL.
Michael Kerns @makerns.bsky.social I’m an editor, and some other stuff too. Senior Publisher at Bloomsbury.
hassaan khan @hassaansci.bsky.social (engineer) thinking??? about hydroclimatic extremes and infrastructure systems @ Illinois
chai connoisseur - h2O enthusiast on Turtle Island
\\ usual disclaimers
Silvia Francesca Varotto @svarotto.bsky.social Research assistant professor at LICIT-ECO7, ENTPE & Univ Eiffel, Lyon, France. Expert in modelling human behaviour with emerging technologies for sustainable and safe mobility. https://silviavarotto.weebly.com
Hun Park @climate-nature.bsky.social Communicating science and data, I illuminate the interconnectedness of climate action, biodiversity conservation, and energy policy. I translate complex information into clear narratives to drive informed decisions for sustainable solutions.
Unabridged Bookstore @unabridgedbooks.bsky.social new here, eager to talk about books!
📍Chicago, IL
Qingshi Tu @q-tu.bsky.social * Opinions are my own
* PI of Sustainable Bioeconomy Research Group at UBC
* grouptu.forestry.ubc.ca
EMRE KIZILKAYA @emrekizilkaya.bsky.social Ph.D. in Media & Communication | '24-'25 Carr-Ryan Center Fellow at Harvard Kennedy School | Knight Visiting Nieman Fellow '19 | IVLP Alumnus | IBM Certified AI Developer https://www.linkedin.com/in/emre-kizilkaya #Media #Humanities #AI #Data #Ethics
Robin Sandell @urbanferryist.bsky.social Making ferries work as public transport.
Chris McCahill @chrismccahill.bsky.social Managing Director at ssti.us | Transportation Commission & Plan Commission for #MadisonWI | he/him
Junyi Ji 🌱 @jijunyi.bsky.social Enjoy transportation and dynamic systems. Open Traffic Science. Views are my own.
ITS International: We ♥️ ITS @itsinternational.bsky.social Connecting the minds behind mobility since 1995
Urban Mobility | Intelligent Transportation Systems | Vision Zero | Traffic Nerds Assemble!
🚦🚙 🛴🚌 🚶🏾♀️🚲 🚇 🚛 🚧
⏩ | Subscribe for Free
www.itsinternational.com
Adam Hill 🚇🚏🚶♂️🚃🛴🚙🚲 @itseditoradam.bsky.social Urbanism | Cities | Active Travel I Mass Transit | Micromobility | Traffic Management | ITS 💚 & Luna’s human representative 🐈
www.itsinternational.com
#trafficnerds t-shirts: bennymeadows.teemill.com 💛👕
Get 🆓 #trafficnerds badges from me when you see me
Jennifer (Trenholm) Ferguson-Mitchell @chanler.ch Former United Nation, World Economic Forum & WWF. Using communications to change the world 🌍 & having fun along the way. Focused on #SDGs to create a better world for people and the planet. Based in US & Switzerland, working globally.
www.Chanler.ch
Prof B (Matthew Burke) @weekendatburkys.bsky.social CEO of Bicycle Queensland 🚲 🚲 🚲 Transport and urban planning Prof from Brisbane, Australia. Cycling, walking, micro-mobility, public transport, urbanism, electrification, and more.
Claudio Magliulo | Clean Cities Campaign @claudioclimate.bsky.social Climate seagull. Strategic comms, campaigning and nerdiness. Father of Anita. I lead @cleancitiescampaign.org in Italy. Formerly @350.org. Views (and puns) very much my own.
Aseela Haque @aseela.bsky.social
www.aseelahaque.com
Dimitris Milakis @dimilakis.bsky.social Transport Innovations and Society. DLR 🇩🇪 Formerly: TU Delft 🇳🇱 UC Berkeley 🇺🇸 UPatras, NTUA 🇬🇷. Own views.
@docrockne.bsky.social @docrockne.bsky.social 
Johanhal @johanhal.bsky.social Mobility Entrepreneur & Investor | Co-founder & Partner, Beta Mobility
Linh Phuong @linhphuongtl.bsky.social PhD Student @ University of Glasgow, Scotland, UK. Interested in Human Mobility, Traffic & Transport Science, Infrastructure, and Climate.
Rachel @rachelcinema.bsky.social Rêveuse urbaine. Humaniste. Gourmande. Montréal à pied, à vélo. Ville à échelle humaine. Urbanisme. Architecture. Mobilité durable et structurante. Environnement. Livres et films.
Marieke Krijnen @mariekekrijnen.bsky.social Academic copyeditor, she/her, at www.mariekekrijnen.com. PhD from Ghent University. Specializes in urban studies, urban and human geography, Middle East studies, political economy, Chicago style. Advanced Professional Member of the CIEP.
🚂 fan!
Krishnan Viswanathan @transportdata.org Transportation, Data, Books, Food.
Greg Erhardt @gregerhardt.bsky.social Models and data to inform transportation planning and policy. Associate professor of civil engineering at the University of Kentucky.
http://transportlab.net
Don MacKenzie @donmackenzie.bsky.social 
Liam K McGrath @liammcgrath.bsky.social Forecasting & modelling for sustainable cities Transport for London🚇 Director at Leathermarket CBS affordable housing 🏢 Director se1.solar Community Energy ☀️ Urban history podcast yeoldeguide.com
Personal opinions
liamkmcgrath.com
MJ Azad @mazadd.bsky.social Economic data scientist in city transportation and policy| Pro-walk, (e-)bike,transit+ science | Architectural designer
Connect with me on LinkedIn:
https://www.linkedin.com/in/mojdehazad/
📍NYC
Chris Kennedy: ‘MALTHUS ENIGMA’ @malthus-enigma.bsky.social Author of Malthus Enigma: Technology, Science, and Policy for a Fragile Earth
Danny @longboy428.bsky.social Vietnamese in Melbourne. Public Transport, Walking, Math, Animation, physics, tech, traveling. He/Him.
@danielequercia.bsky.social @danielequercia.bsky.social 
Tricia Hayes @triciahayes.bsky.social Chair of London TravelWatch, Member of Transport Focus and BTP Authority, senior adviser at Baringa.
Xiao Li @xiaoli-transport.bsky.social Senior Researcher in Geospatial Data Science and Urban Mobility @ Transport Studies Unit, University of Oxford
Ignacio Tiznado-Aitken @tiznadoaitken.bsky.social Assistant Professor - Department of Geography and Planning, UofT
Associate Director - Mobilizing Justice Partnership
Interests: Sustainable and equitable transport, spatial and mixed methods
Website: https://tiznadoaitken.cl
Laurence Aurbach @laurbach.bsky.social Writer and editor specializing in walkable urbanism and sustainable transportation. Author of A History of Street Networks (2020).
https://www.pedshedpress.com
Kevin Xu Shen 沈志文 @kevshen.bsky.social transportation, policy, planning, and onwards. 🚌 fighting for clean air and a just world. now at
@UCSUSA, recently at @MIT. he/him. views my own.
@ianon2wheels.bsky.social @ianon2wheels.bsky.social Healthcare sustainability. Climate change mitigation and resilience. Sustainable procurement. Rethinking waste. Chicago bike commuter.
andy, beach boy🌊 @andycannoly.bsky.social andy. land use planner by trade. also a nerd and transit/pedestrian safety enthusiast.
occupied Duwamish lands (Seattle) he/him
🏳️🌈🏙️🚎🐱🗺️🏞️📚🏳️⚧️
Kirsten Bladh @kerstanley.bsky.social Policy @ Open New York. She/her. Cargo bike mom. Bassist for Leggy in my former life. NYC via LA via Cincinnati. Left urbanist 🏙️🚆🌹 Lamentably, a Bengals fan 🐅 NYCWHL 🏒
Zoltan Nagy @zoltannagy.bsky.social Engineering prof at TU/e | demand side energy management | connected communities | CityLearn
Max Dunitz @maxdunitz.bsky.social Doctorant, Centre Borelli (compte perso). Je travail sur des problèmes inverse en imagerie. I work on inverse problems in imaging. He/they. #BlackLivesMatter Site web : max-dunitz.perso.math.cnrs.fr
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.
Effective Environmentalism @effectiveenvironmentalism.org 💡💚 We're growing a movement around tackling climate change and environmental challenges as effectively as possible, based on evidence, careful analysis, and science. Join us!
Find opportunities: www.effectiveenvironmentalism.org
Orbital Policy Group @druidorbital.bsky.social Viewpoints and opinions on policy issues relating to Low Earth Orbit, including policy, science, governance, and cybersecurity.
notalenanot @notalenanot.bsky.social ¯\_(ツ)_/¯
Mohammad Movahedi @m-movahedi.bsky.social Construction and Infrastructure Management
PhD Candidate at FAMU-FSU College of Engineering
m-movahedi.com
Adam Mongrain @adammongrain.bsky.social ED, More and Better Housing Canada
Montréal, Québec
EN/FR
Guru Madhavan @bioengineergm.bsky.social 
Derek Dysart @derekdysart.com Dad, Audiobook narrator, outdoor enthusiast
Streetsblog USA @usa.streetsblog.org Covering the movement to end car dependency and make America better for walking, biking, transit and more. 
Daniel I. Avila-Ortega @daniel-iavor.bsky.social #IndustrialEcologist #Forestry Passionate. Disruptive by nature. Founder of the Mexican Center of Industrial Ecology. #InputOutput #Telecoupled #LandUse #Biodiversity PhD now @sthlmresilience.bsky.social
Dan Hoornweg @urbanscape.bsky.social Working on sustainable communities, one city, class, coffee, and occasional canoe trip at a time. Energy & Urban Systems Prof at Ontario Tech University.
Warren Wells, AICP @warrenjwells.bsky.social Policy & Planning Dir. @marinbike.org • UCLA Urban Planning • AICP Planner • Baltimore ➡️ LA ➡️ East Bay • 🚫🚗Car-free commuting since 2015 • Missing middle renter.
📍Berkeley, CA
Thomas Bamonte @thomasbamonte.bsky.social Chicago. Transportation law, policy, and technology mostly. Senior Advisor, Metropolitan Planning Council. Views my own. One ticket, one timetable, one network....
Kea Wilson @keawilson.bsky.social Senior editor + advocacy journalist at Streetsblog USA covering the movement to end universal car dependency. Based in STL, reporting nationally. Tips to: kea@streetsblog.org or kwilson.52 on signal. Opinions are my own.
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.
@emohareb.bsky.social @emohareb.bsky.social 
Existential Comics @existentialcomics.com A philosophy webcomic about the inevitable anguish of living a brief life in an absurd world. Also jokes. 
Jessica Schoner @jschoner.bsky.social Pretty much just here for the #TRBAM updates in January, and then quiet the other 50 weeks of the year. Active transportation, safety, parenting, and data stuff.
Luyu Liu @luyuliu.bsky.social Assistant Professor @AuburnGeosciences. Transportation geography, Public transit, Urban computing. luyuliu.github.io
Clean Cities @cleancitiescampaign.org Championing healthy, climate-friendly transport in European cities.
https://cleancitiescampaign.org/ 
SamOnTheBike @samonthebike.bsky.social He/Him - Cars shouldn't be the ONLY way to get around my city.
@SamOnTheBike@urbanists.social
Paul Behrens @profpaulbehrens.bsky.social Prof at Oxford Martin School working on food, energy, and climate change. Book: The Best of Times The Worst of Times: Futures from the Frontiers of Climate Science http://shorturl.at/lzCTZ
#ClimateChange #ClimateAction 
Dominik Wiedenhofer @dominikwiedenhofer.bsky.social Sustainability, Industrial Ecology, Circular Economy, Climate Change Mitigation. Senior Scientist & Lecturer, University of Natural Resources and Life Sciences, Vienna. Born at 344ppm.
https://boku.ac.at/en/personen/person/EC2B15284DC69568
Max Sugarman @maxsugarman.bsky.social Chief Executive of ITS UK, the industry association for transport technology
Jaime Soza-Parra @sozaparra.bsky.social Assistant Professor in Transportation Analysis and Data Science 🟥 | Utrecht University
🇨🇱
www.sozaparra.cl
Matthew Hayek @matthewhayek.bsky.social NYU Associate Professor of Environmental Studies. Climate, animals, land use, and food systems. MatthewHayek.com