Andrew Leach @aleach.ca Professor of Economics and Law at the University of Alberta. Interested in climate change, constitutional law, and energy infrastructure. Find me here or on the web at aleach.ca.
Tom Gill @tomgillpredicts.bsky.social The Dust-Poster! Professor/Scientist, University of Texas- El Paso.
educator, futurist, Predictor, humorist, human rights defender, thoughtprovoker, militant moderate
#dust #aerosols #EarthScience #drylands #aeolian #DisabledInSTEM
@tomgillpredicts on X
Roel Konijnendijk @roelkonijn.bsky.social Ancient historian (Greece, Persia, war, history-writing). Darby Fellow in Ancient History at Lincoln College, Oxford. Moderator at r/AskHistorians. Ditch guy on YouTube.
Republicans Against Trumpism @rpsagainsttrump.bsky.social Pro-democracy conservatives Republicans fighting Trump & Trumpism.
Join our growing community on Substack: https://open.substack.com/pub/republicansagainsttrumpism/p/im-his-lawyer?r=9qjst&utm_medium=ios
PM2.5 Kills ~9 Million People Each Year Worldwide @tkovach.bsky.social Climate dad to E, J, and C. Working on decarbonization and environmental justice in Cleveland. Founded the Cleveland Refugee Bike Project. Supports Juventus & Eintracht.
Opinions my own and probably wrong.
DeniseG @denisegutzmer.bsky.social Keeping tabs on drought impacts for the National Drought Mitigation Center for 10+ years. Nebraskan. Views are mine. Be kind.
Mastodon: @DeniseGutzmer@mindly.social
Gail Helt @gailhelt.bsky.social CIA analyst, 2003-14. Close Guantanamo. Human Rights. China. My posts reflect only my views.
Ambassador Greg Delawie @gregdelawie.bsky.social Former FSO, Ambassador, Europe & Balkans guy, arms controller. Still uphold my oath to defend the Constitution "against all enemies, foreign and domestic." @steadystatevets @NSL4America. Views mine. 
John Sipher @johnsipher.bsky.social Former CIA clandestine service. Spycraft Entertainment, Atlantic Council, NAFO. Host of Mission implausible podcast. Friend of dogs everywhere. Jimothy welcome here!
American Association for Aerosol Research @americanaerosol.bsky.social Committed to the development of aerosol science and its application in society. Offering a global forum for leading aerosol researchers to learn and network.
EUMETSAT @eumetsat.int European operational #satellite agency for monitoring weather, #climate and the environment from #space 🛰
eumetsat.int
Francois Jobard @francoisjobard.bsky.social Météorologue.
Inspecteur des tempêtes de neige. ❄
La seule information fiable c'est la poésie 😉
#météo #climat
Annele Virtanen @annelev.bsky.social Atmospheric scientist, outdoor enthusiast, mother
@billbramhall.bsky.social @billbramhall.bsky.social Editorial cartoonist at New York Daily News
Mark Carney @mark-carney.bsky.social Prime Minister of Canada and Leader of the Liberal Party | Premier ministre du Canada et chef du Parti libéral
markcarney.ca 
Jon Cooper @joncooper-us.bsky.social Democratic strategist. Formerly Long Island Campaign Chair for Barack Obama; Majority Leader of the Suffolk County Legislature. Gay dad of five terrific kids. Writer and producer of echoesoftheunknownpodcast.com. Coffee addict. New York/Florida. 🌴
Aerodyne Research @aerodyne.com State-of-the-art research & mobile lab measurement services; advanced instrumentation for addressing challenges in the areas of atmosphere, soil health, emissions, geochemistry, and health, as well as tools for the emerging hydrogen economy.
aerodyne.com
Adam Tooze @adamtooze.bsky.social Chartbook Substack https://adamtooze.substack.com/
OnesandTooze podcast https://foreignpolicy.com/podcasts/ones-and-tooze/
C******* University historian, Director European Institute, Chair Cttee on Global Thought.
Economics, history, theory, politi
EU PVSEC @eupvsec.org ☀️ The global platform for photovoltaics research and industry
📅 14–18 September, Rotterdam, the Netherlands #EUPVSEC2026
www.eupvsec.org
Kim Richard Nossal @kimnossal.bsky.social Professor emeritus of political studies, Centre for International and Defence Policy, Queen's University, Kingston, Ontario, Canada
Mark Shapiro @mhshapiro2.bsky.social Scientist - retired physicist with publications in nuclear physics, nucleosynthesis, solid earth geophysics, atmospheric physics, and computational surface physics - creator of YouTube videos on #ClimateChange - APS Senior Fellow - amateur radio op K6OGD
National Centre for Atmospheric Science @ncas-uk.bsky.social Unlocking the answers to climate change, high-risk weather and air pollution 🌏 We are NCAS - leading atmospheric science in a changing world.
Latest news, events, courses, jobs: https://linktr.ee/atmosphericscience
The Walrus @thewalrus.ca Award-winning independent journalism, fact checking, national ideas-focused events, and podcasts. Stay connected: http://thewalrus.ca/newsletters
Maclean’s Magazine @macleans.bsky.social Engaging stories. Bold voices. Big ideas. Maclean’s leads the national conversation on everything that matters in Canada. macleans.ca
Sotirios Papathanasiou @seetheair.bsky.social Founder GO AQS
WELL Building Institute Air Advisor
Expert Advisor @ The Safer Air Project
Indoor Air Quality is the value that reassures the well-being of occupants.
www.seetheair.org
www.goaqs.org
John Morales @johnmoralestv.bsky.social ClimaData® Certified Broadcast and Consulting Meteorologist (CCM)
Campaign Co-chair at @climatepower.bsky.social
Hurricane Specialist NBC 6 Miami & Noticias SIN, Dominican Republic
BSc & Member of the Board of Trustees at Cornell | MSc at Johns Hopkins
Alex Boreham @cyclonicwx.bsky.social Tropical meteorologist, B.S. FSU, amateur web, Python, & GrADS programmer.
Also known as Not Sparta
Dave Nolan @davenolan305.bsky.social Professor of Atmospheric Science at
University of Miami, Hurricane Expert, and Weather Consultant at rfqweather.com
Sang-Ki Lee @sklee621.bsky.social Physical oceanographer at NOAA's Atlantic Oceanographic and Meteorological Laboratory, Miami FL. The contents of my posts are mine personally.
Climatologist49 @climatologist49.bsky.social PhD Climate Scientist. Alaska. The Earth is warming because of us. Mooseologist. All opinions are my own. Future FIFA Peace Prize winner. TDS. Signal: Climatologist.49
C&EN (Chemical & Engineering News) @cenmag.bsky.social https://cen.acs.org/
Sharing the world of #chemistry: News🗞 Research⚗️ Infographics #PeriodicGraphics ℹ Pictures #CENChemPics 📷 Comics #SketchChemistry 🗯 #FluorescenceFriday ❇️
Miville Tremblay @miville.bsky.social Fellow invité CIRANO, ex central banker, ex financial reporter, regular op-ed contributor in La Presse and Sage Substack.
https://www.linkedin.com/in/miville-tremblay-cfa-icd-d-03764535?utm_source=share
Olaf Weber @webero.bsky.social CIBC Chair and Professor in Sustainable Finance, Schulich School of Business.
Oxford Earth Sciences @oxuniearthsci.bsky.social The Department of Earth Sciences at the University of Oxford
Prof. Chiara Giorio @chiaragiorio.bsky.social Atmospheric scientist, PI @ChemCambridge @GiorioGroup, fellow @christs_college, tweeting about science, success, and failure. Views are my own. she/her
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
Nat Bullard @nathanielbullard.com Energy systems and information platforms.
I do that presentation.
https://www.nathanielbullard.com/
📍Singapore
New Yorkers for Clean Power @nyforcleanpower.org New Yorkers for Clean Power Inc. (NYCP) is a statewide collaborative campaign to rapidly shift to an equitable clean energy economy.
altNOAA 🇺🇸 @altnoaa.bsky.social Original resistance account for the NOAA. Not official account of NOAA but close enough we can forecast them.
Weather geek. Boat driver. Former airman. Weekend redneck. Coffee: black. Kinda Grumpy. Go Walz! 🌮
OpenAQ @openaq.org We're a non-profit fighting #airinequality by harmonizing disparate AQ #opendata and convening community. Join Slack: https://link.openaq.org/joinslack
Jess Davis @jessmarindavis.bsky.social PhD. Social scientist and entrepreneur combining research and practice. Illicit finance expert, newsletter writer, consultant. Working to stop bad people from doing bad things with money. Co-host of Secure Line podcast.
Canadian Association of Physicians for the Environment @cape-acme.bsky.social Physician-led non-profit working to secure human health by protecting the environment
Amy Collins @dramycollins.bsky.social Emergency physician. Advocate for low-emissions, resilient healthcare, and climate-health solutions. Boy and dog mom. Plant-based diet follower. Healthy planet = healthy people. 🌎
Sherilee Harper @sherilee.bsky.social Canada Research Chair in Climate Change & Health | Professor, University of Alberta | Lead Author IPCC #SROCC & WGII #AR6 | IPCC WGI Vice Chair
Dr Maria Neira @drmarianeira.bsky.social Director,
Environment, climate change and health.
WHO
Danny Satterfield @wildweatherdan.bsky.social Meteorologist for 45 years. Fellow of the AMS. MS Earth Science. Stood at the S. Pole. If you’ve not deeply loved a dog, I don’t really trust you. Go Canada🇨🇦!
The laws of Physics are real, everything else is politics- ND Tyson. 📸👨💻🌦️☔️🍎 No bigots🇺🇦
Antagoniste 🏴 @antagonisteqc.bsky.social It is a tale
Told by an idiot, full of sound and fury
Signifying nothing.
(Macbeth, Act 5 Scene 5)
Clean Air Fund @cleanairfund.bsky.social Philanthropic organisation bringing together governments, funders, businesses and campaigners for a world where everyone breathes clean air 🌍 #CleanAirNow
cleanairfund.org
Dan Goldberg, PhD @dgoldbergaq.bsky.social George Washington University Assistant Research Professor. Posting about air quality, remote sensing, climate change, and health
Delphine Farmer @chemdelphine.bsky.social Environmental chemist. Professor at Colorado State University. Avid birder, very amateur photographer. I study the air we breathe (indoors and out) and how it impacts forests, climate, and health. Navigating life with the grace of a hippo on a balance beam
Tom Pugh @tompugh.bsky.social Scientist working on ecosystem-climate interactions, forests and the carbon cycle at Lund University and the University of Birmingham, was @tompughlab on Twitter
Domenico Taraborrelli @taraborrelli.bsky.social Atmospheric chemist at Forschungszentrum Jülich.
Passionate about explaining atmospheric composition with multiphase chemical kinetics.
Commuting to work with my racing bike 🚲- L Larry Horowitz @larryhorowitz.bsky.social Atmospheric chemist at NOAA GFDL
Ari Feinberg @arifeinberg.bsky.social Atmospheric chemistry researcher at IQF-CSIC, working on the global cycle of mercury (Hg) and other elements. 🇨🇦
Paul Griffiths @paultgriffiths.github.io Lecturer in atmospheric chemistry at the University of Bristol (🧪).
Hartmut Herrmann @hh24.bsky.social Atmos Chem Prof & Dept Hd @tropos_eu
GooScholar=http://bit.ly/3cUDrYY #Aerosol #Atmochem #Covid19: AAF=http://bit.ly/3mHGy9E FAQ=http://bit.ly/3JI5HwO 
Nadine Borduas-Dedekind @nadineborduas.bsky.social I’m an atmospheric organic chemist and I love to push arrows. I lead the #NBDgroup in Chemistry at UBC via a non-linear career path through🇨🇭🇿🇦🇦🇺🇩🇪🇬🇧🇨🇦. Skier.
Joost de Gouw @gouwlab.bsky.social Physicist studying organic chemistry in the atmosphere using mass spectrometry. Urban air pollution, wildfire smoke, oil and gas, indoor air. Professor at the University of Colorado Boulder. Group website at sites.google.com/view/de-gouw-lab
Doug Collins @earthmechanic.bsky.social Atmospheric and Analytical Chemistry. Mass Spectrometry. Indoor air. Air-sea interface. Multiphase chemistry. Asst Prof at Bucknell Univ. #chemsky #academicsky #TeamMassSpec
Cora Young @svocora.bsky.social Chemist, environmentalist, all-around nerd | Professor & Rogers Chair in Chemistry at York U in Toronto, Canada | www.cjygroup.com | Posts my own | She/her
Jesse Kroll @jessekroll.bsky.social atmospheric chemist at MIT; also does other stuff sometimes- R Róisín Commane @roseatmos.bsky.social Atmospheric chemist learning about cities after spending lots of time learning about forests and Arctic tundra
Dylan B. Millet @dbm.bsky.social Atmospheric chemist | 🇨🇦🇺🇸 | Distinguished McKnight University Prof @ U Minnesota
Carl Percival @carlpercival.bsky.social Atmospheric Scientist, JPL NASA
https://science.jpl.nasa.gov/people/percival/
William Porter @willporter.bsky.social Atmospheric scientist and #UCRiverside associate professor interested in air quality, human health, and environmental justice. (he/him)
http://portergroup.ucr.edu
Chris Tessum @ctessum.bsky.social Assistant Professor of Environmental Engineering at UIUC
https://ctessum.cee.illinois.edu/
Steph Schneider @stephschneider.bsky.social Current NSERC Postdoctoral Fellow @ McMaster University in the PARTICLES group!
University of Toronto and University of Alberta alumna
Michael Vermeuel @mvermeuel.bsky.social Assistant Prof. @PurdueEAPS, atmospheric chemistry, ecosystem-atmosphere exchange
eaps.purdue.edu/airchem
Jingqiu Mao @jingqiumao.bsky.social Atmospheric chemist at University of Alaska Fairbanks.
Amanda Frossard @amandafrossard.bsky.social Atmospheric Chemist; Associate Professor of Chemistry
🌊🌎👩🔬
Ben Brown-Steiner @drbs.bsky.social atmospheric chemist / climate scientist / birdwatcher / he / him
Markus Ammann @mammann63.bsky.social Scientist, atmospheric chemist, concerned about environment and climate, mountaineer
Liine Heikkinen @liinehei.bsky.social Atmospheric scientist from Stockholm University. 
Kelvin Bates @kelvinb.bsky.social Atmospheric chemistry • Research scientist @ NOAA, soon-to-be assistant prof at CU Boulder MechE • he/him
Dan Visioni @danvisioni.bsky.social Climate scientist studying aerosols, chemistry, radiation, climate & society from Volcanoes 🌋and Climate Intervention. Assistant Professor at Cornell EAS, from 🇮🇹proudly🏳️🌈 More at https://dan-visioni.github.io/ and https://www.wcrp-climate.org/ci-overview
James Allan @jamesallanatmos.bsky.social Long haired atmospheric scientist at the University of Manchester and NCAS. Opinions my own.
Dr Kathryn Emmerson @kathrynemmerson.bsky.social Principal Research Scientist at #CSIRO Australia. Atmospheric chemical modeller working on biogenic gases, pollen and particulate matter. A Brit in Melbourne, posting my own views.
Lelia Hawkins @leliahawkins.bsky.social Atmospheric and climate scientist, educator, momma bear.
Tim Bertram @timothybertram.bsky.social Dad, UW Madison professor, atmospheric chemist, xcskier. Tweets are mine
Dr. Eva Pfannerstill @evayp.bsky.social Atmospheric chemist | Helmholtz Investigator Group Leader at @fz-juelich.de | Junior Professor @unicologne.bsky.social | biosphere-atmosphere interactions | airborne flux measurements | Vertrauensdozentin @boell.de | Born at 353 ppm. Views my own.
Makoto Kelp @soa-mazing.bsky.social Asst Prof. UUtah | Postdoc Stanford | Harvard PhD ‘23 | Air Quality + Fires + Climate 🌎 | Machine Learning + Data Science 🖥️
Jeffrey Geddes @jgeddes.bsky.social Associate Professor of Earth & Environment at Boston University. Air quality, atmospheric chemistry, and remote sensing. Toronto, Halifax, Boston. he/him. 🏳️🌈 🍁 🌎 https://sites.bu.edu/jged/
Tina Liu @tinaliu.bsky.social Assistant Prof. at UBC Geography | studying fires 🔥 🌳 💨, what drives them + their impacts on air quality and public health | she/her | tianjialiu.com | embrslab.com
Joel F. de Brito @joelbrito.bsky.social Associate Professor at IMT Nord Europe | Responsible for the research theme "Observations, Sources, and physico-chemical Processes in the Atmosphere" at CERI EE
Mission officer CNRS-INSU OA for Brazil&Amazon
Shahzad Gani 🍉 @shahzadgani.bsky.social Assistant Professor, IIT Delhi.
Aerosols, Air Pollution, Science Communication
He/Him
Adrien Gandolfo @adgandolfo.bsky.social Atmospheric chemist - Assistant Professor @UnivLyon1 @ircelyon | 🏕🏄♂️⚽️ | he/him
Rebecca Hornbrook @bechornbrook.bsky.social Atmospheric chemist who occasionally travels around the world measuring trace gases to study air quality & climate. she/her
Max Desservettaz 🏳️🌈🍉 @dessemax.bsky.social Research fellow at Uni of Wollongong, Australia | Bushfire smoke and management | Air quality | Trace and reactive gases
Qindan Zhu @qzhu.bsky.social MIT postdoc | Atmospheric scientist | Chemistry-climate interaction | Urban air pollution
Theodore S. Dibble @ted-dibble.bsky.social Atmospheric/environmental chemistry professor. Physical chemist by training using computational quantum chemistry and kinetics. #AtmosChem. Born at 320 ppmv.
pronouns: he/him/his
Joel Thornton @atmostaj.bsky.social Professor of Atmospheric and Climate Science. I study the natural and perturbed chemistry and composition of the atmosphere and how it interacts with weather and climate. But, I like other things too. Opinions my own, etc.
Gabi Pfister @gabriele-pfister.bsky.social Scientist in Boulder, CO with Austrian roots. Views expressed are my own.
Nic Carslaw @niccarslaw.bsky.social Interested in indoor air quality. Views my own.
Dr. Jing Tang @lundjing.bsky.social Assistant Professor focusing on process-based ecosystem and earth system modeling, vegetation-atmosphere interactions and soil biogeochemisty.
langleydew.bsky.social @langleydew.bsky.social Atmospheric chemist with a global perspective. Coffee and outdoor enthusiast. 
Dr Nicole Cowell @geographynicole.bsky.social Researching solutions to address urban air pollution and create healthier cities💭
Views my own.
📍Currently found at Imperial College London and World Economic Forum🇬🇧🇨🇭
Previously Birmingham Urban Observatory, WM-Air, University of Birmingham 🐂
Pierre Herckes @ph15.bsky.social Chem prof @ASU. Environmental Analytical Chemistry. Interested in Air and Water Pollution. Views my own.
John Wenger @johnwenger9.bsky.social Professor of Chemistry
University College Cork
Atmospheric scientist, clean air advocate