Ronen Tamari @ronentk.me Researcher & entrepreneur | Co-founder @cosmik.network | Building @semble.so | collective sensemaking | https://ronentk.me/ | Ecosystem building @atproto.science @cairos.network | Prev- Open Science Fellow @asterainstitute.bsky.social
Hank Green @hankgreen.bsky.social Long Time Internet Guy
Sebastian Haas 🇪🇺 @seb.haas.partners data, policy | impact entrepreneur | covering soil and landscape‑scale agrobiodiversity
1st 🇪🇺 EU's data altruism organisation dedicated to land use policy and climate journalism.
https://www.linkedin.com/in/sebastianoskarhaas/
Leopards Ate My Face @leopardfeasts.bsky.social 
Arno Kopecky @arnokopecky.bsky.social Writer at large (but mostly Vancouver).
Environment, culture, politics...
All too earnest.
Halley E. Froehlich @dochfroehlich.bsky.social Mom. University of Helsinki, Finland Full Professor studying aquaculture, fisheries, and climate change.
DGBassani @dgbassani.bsky.social Widower dad of 3. Problem-solver living an unsolvable problem. Fatuity loather. Epidemiologist learning about complexity and networks. https://www.dlsph.utoronto.ca/faculty-profile/bassani-diego-g/ and https://www.isi.it/people/diego-bassani/ graphstate.co
@azeem.bsky.social @azeem.bsky.social 
Royal Irish Academy @ria.ie Fostering excellence and scholarship to enrich society, e. 1785.
Home to the RIA Library, 8 research programmes & a publishing house.
www.ria.ie
Reg. Charity No. 20003524 - Reg. Revenue No. CHY 2795
Moira Donegan @moiradonegan.bsky.social Opinion columnist covering gender and politics at The Guardian. Writer in residence at the Michelle R. Clayman Institute for Gender Research. Host of the podcast In Bed with the Right. Real piece of work.
mr. TIM @timkellogg.me AI Architect | North Carolina | AI/ML, IoT, science
WARNING: I talk about kids sometimes
Artemy Kolchinsky @artemyte.bsky.social Researcher studying nonequilibrium thermodynamics, information theory, origin of life, complexity. Currently at Universitat Pompeu Fabra in Barcelona, Spain
Sara Beery @sarameghanbeery.bsky.social Research on AI and biodiversity 🌍
Asst Prof at MIT CSAIL,
AI for Conservation slack and CV4Ecology founder
#QueerInAI 🏳️🌈
Ketan Joshi @ketanjoshi.co Hey, I'm a climate and energy writer / data analyst who focuses on corporate + govt accountability
Creator + curator of the Greensky feed: https://ketanjoshi.co/greensky/
Based in Oslo but write about US, Europe, Aus too - ketan.joshi85@gmail.com
Ukraine Solidarity Campaign 🇺🇦✊🏽🚩 @ukrainesol.bsky.social UK-based internationalist labour movement campaign in support of Ukraine + its labour movement. Founded 2014. Russia out! Victory to Ukraine! #SolidarityWillWin
ukrainesolidaritycampaign.org/join
Sébastien Darses @sebdarses.bsky.social Act. Int. Agent? (Math. Assoc. Prof., on leave)
Research: Prob / Stat / Ant
Teaching Project (non-profit): https://highcolle.com/
https://sites.google.com/view/sebastien-darses/research?authuser=0
Infinite Nuance @infinitenuance.bsky.social Building Modular Spiral Cognition
Advancing the Infinite Nuance Project
Hoping good maps travel faster than societies collapse
Cognitive Cartographer | Musician | Dreamer
I am an infinitely nuanced individual, same as you.
Pride Ott 🦦 🏳️🌈🏳️⚧️ @hikoukihikouki9.bsky.social 26 | He/Him | San Diegan | Rugby, language learning, transit | Otter in the furry sense and the gay sense | Aspiring RN
Michael Burchert @michaelburchert.bsky.social 🇪🇺 Educator, Speaker, Builder, Activist. Regenerative construction.
That #strawhouse guy.
Fixing mistakes @ built environment. Independent #Bauwende construction revolution advocacy, english & german word salad, enjoy! https://linktr.ee/michaelburchert
The Great Simplification @tgspodcast.bsky.social A podcast exploring money, energy, economy, and the environment with world experts and leaders to understand how everything fits together, and where we go from here. Hosted by @natehagens.bsky.social.
thegreatsimplification.com
Nate Hagens @natehagens.bsky.social Educator, systems thinker, and host of The Great Simplification podcast (@tgspodcast.bsky.social), exploring the science underpinning the ecological, energy, & economic crises.
thegreatsimplification.com
Heather Marsh @heathermarsh.bsky.social Still trying to change the world
We still need Getgee https://georgiebc.wordpress.com/code-will-rule/
Author of the Binding Chaos series https://www.amazon.ca/dp/B089JXZ8RB?binding=kindle
Patreon - discussions/content https://www.patreon.com/c/BindingChaos
Kate Marvel @drkatemarvel.bsky.social Climate scientist, formerly NASA, currently Project Drawdown. Former astrophysicist, current Earth supremacist. Author of HUMAN NATURE, best book of 2025 according to both Scientific American and my dad https://shorturl.at/aJRYb
Erica Ifill @wickdchiq.bsky.social Award-winning 🇬🇾 🇨🇦 Political Economist. Columnist. Law & Order historian. Reality TV veteran. Talking my shit @badandbitchy.com
Never forget 👉🏾 I will be vindicated.
Christopher Callahan @ccallahan45.bsky.social climate scientist: extreme heat, health, attribution, climate in the courts. heat wave is two words. iuclimateandsociety.com
Sustainable Farming @sustainablefarming.bsky.social Sharing information about sustainable and ecological farming to help mitigate the effects of climate change and to work towards a sustainable food supply chain for earth.
Ilya Chugunov @ilyac.info Computational Photography Researcher @ Adobe, previously Princeton PhD: https://ilyac.info
I sometimes do a regular photography: http://instagram.com/_ilya_c
Our lab: https://light.princeton.edu/
Dad Jokes @dadsaysjokes.com Your go-to page for daily dad jokes 👨🤣
Mike Moyes @mlamikemoyes.bsky.social Minister of Environment and Climate Change
MLA for Riel
Pheronym @pheronym.com Pheronym uses a new kind of #pheromones from #nematodes to control agricultural pests in the soil and provide climate smart solutions to farmers.
#NematodePheromones #WormPheromones #soilhealth #biocontrol #agriculture #biopesticides #ecofriendly 
Rachel Gilmore @rachelgilmore.bsky.social Your least favourite person's least favourite award-winning journalist✨
Follow for short-form videos on issues that matter! 💅
SUBSCRIBE: rachelgilmore.substack.com/
https://linktr.ee/rachel_gilmore
AI Accountability Lab @aial.ie Trinity College Dublin’s Artificial Intelligence Accountability Lab (https://aial.ie/) is founded & led by Dr Abeba Birhane. The lab studies AI technologies & their downstream societal impact with the aim of fostering a greater ecology of AI accountability
Canada's National Observer @nationalobserver.com Canada's National Observer delivers vital reporting on the defining crisis of our time: climate change. Through rigorous investigation and compelling storytelling, we expose the forces shaping Canada's climate future.
www.nationalobserver.com/newsletters
Reid Hoffman @reidhoffman.bsky.social Co-Founder of LinkedIn. Focused on using AI to find the cure for cancer, faster. Proud American.
Writing, Pod, ETC: Beacons.ai/reidhoffman
Michael Wong @miquai.bsky.social Planetary scientist by day 🪐 podcaster by night 🎙 photographer at all times 📷 philosopher in my dreams 💭 https://miquai.myportfolio.com/
Dr. Fatma Kaplan @drfatmakaplan.bsky.social CEO & Founder @Pheronym.com alumna of @Indbio @activatefellows @cyclotronroad
I am a #scientist #inventor #entrepreneur
I work on #biocontrol #pheromones #nematodes #astronematode #wormsinspace #climatesmart #agriculture
Ayana Elizabeth Johnson @ayanaeliza.bsky.social Marine biologist, writer, policy nerd. Co-founder Urban Ocean Lab, think tank for the future of coastal cities. In love with climate solutions.
INTEGRADIV Biodiversa + @integradiv.bsky.social BIODIVERSA Project aiming at quantify the ongoing biodiversity changes in Mediterranean forests 🐦🦋🌳 and provide useful guidelines to stakeholders 🎯
🌍 FR-DK-ES-GR-IT-NL
https://www.integradiv-biodiversa.org/
Dr. Solomon David @solomonrdavid.bsky.social “The Gar Guy” Fish Scientist & Prof | 🌎Freshwater Conservation | SciComm • GarLab | Views mine | he/him | #GarWeek
📍Saint Paul, Minnesota
Wherever you go, there you gar
https://linktr.ee/solomonrdavid • @garlab.bsky.social
Philippe J. Fournier @338canada.bsky.social Editor-in-Chief 338Canada丨Rédacteur en chef Qc125丨Chroniqueur @ L'actualité, The Walrus & Politico Canada丨Co-host The Numbers podcast丨Prof astronomy & astrophysics丨Occasional cat pictures🤍丨📍Montréal
Science Friday @scifri.bsky.social Entertaining & educational conversations about science, tech, + more. Hosted by Ira Flatow and Flora Lichtman. From WNYCStudios.
Bartley Kives @bkives.bsky.social Reporter. Author. Hiker. Paddler. Eater. 
MePu @mendaciumpugnator.bsky.social People who deviate from the norm are usually more fun. Passion for music and bondage. Humanist. Kitchen prince. Tech nerd. Amps, guitar and bass. Antifascist🔻
Posts in English and Dutch.
#longcovid since 2020.
Siamo tutti antifascisti.
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 
Air Passenger Rights @airpassengerrights.ca Spearheaded by Gabor Lukacs and other consumer advocates.
Airlines think you have no rights. We prove them wrong. Watch us.
https://AirPassengerRights.ca
Illia Ponomarenko @ioponomarenko.bsky.social Live straight out of Bucha 🇺🇦
Dr Abeba Birhane @abeba.blacksky.app Founder & PI @aial.ie. Assistant Professor of AI, School of Computer Science & Statistics, @tcddublin.bsky.social
AI accountability, AI audits & evaluation. Cognitive scientist by training. Ethiopian in Ireland. She/her
Tony Iommi @iommi.com The official Instagram feed for Tony Iommi; founding member & guitarist for Black Sabbath. New solo album “From The Dark” out on 23rd October.
https://tonyiommi.lnk.to/fromthedark
Jeffrey Qi @jeffreygqi.bsky.social Climate adaptation, biodiversity & climate diplomacy @iisd.org | Opinions my own, my employer has better ones | 🇨🇦 Vancouver #Canucks
evy kwong @evystadium.bsky.social 鄺文詠 | contributor @404media.co —evy@404media.co | formerly @wired.com and vice news | moving between the hellscape and food | THOUGHTS/OPINIONS MY OWN
Another Green @anothergreen.bsky.social #ClimateChange #Renewables #Ecosocialism #Think32 #ElinorOstrom #Commons #CorneliusCardew #GaeilgeGachLá #Marx
ClimateChangePost @climatechangepost.bsky.social The ClimateChangePost: the latest news on how the shifting climate is affecting life in Europe. https://www.climatechangepost.com
The Kyiv Independent @kyivindependent.com Independent English-language journalism in Ukraine
Become a member: kyivindependent.com/membership
Natural History Museum, London @nhm-london.bsky.social We’re the museum looking deeper into the Earth’s past to shape a new future where both people and planet thrive.
Protecting the planet, it’s in our nature. 🌍
Global Landscapes Forum @globallf.bsky.social World's largest knowledge-led platform on sustainable land use. We're here to connect, share, learn, act.
🌱 Join the conversation with #ThinkLandscape
globallandscapesforum.org
European Environment Agency @eea.europa.eu The European Environment Agency (EEA) is an agency of the European Union. We provide data and knowledge to policymakers and the public, in order to achieve Europe's environmental, climate and sustainability goals.
https://www.eea.europa.eu/en
Biodiversa+ (European Biodiversity Partnership) @biodiversa.eu Powering R&I and bridging science, policy, & practice for the EU's 2030 Biodiversity Strategy | 83 partners from 41 countries | Protection & Restoration, Transnational monitoring, Nature-based Solutions, Transformative change
🔗 www.biodiversa.eu
Becky Chaplin-Kramer @beckyck.bsky.social Recovering optimist. Desperately seeking hope.
Future Earth @futureearth.bsky.social We are a network of scientists, researchers, and innovators working to provide the knowledge needed to accelerate transformations toward sustainability.
futureearth.org
The Nature Conservancy Science @science.nature.org @nature.org's science network working to optimize science and help TNC advance towards the 2030 goals.
@davidobura.bsky.social @davidobura.bsky.social 
IPBES en français @ipbesfr.bsky.social 
IPBES en español @ipbeses.bsky.social Plataforma Intergubernamental sobre Diversidad Biológica y Servicios de los Ecosistemas (@IPBES). RT≠aprobación. Negacionismo/trolling = bloqueo. http://bit.ly/3BPuRbm
Anne Larigauderie @annelarigauderie.bsky.social Former Executive Secretary, IPBES
Independent Science and Policy Advisor
Prof. Vigdis Vandvik @vvandvik.bsky.social ❤️🧠 Plants; Alpine; Ecology; Experiments; Biodiversity; Functional Ecology; GlobalChange; Macroecology; Science-Policy; Science Communication; HigherEd; She/her 🌾🌱📏⛰📈🌦🐑🔥⛰🌍🧪🚴♀️💪👟📎 #BtwnTheFjords #CESAM_UiB #UiB 🇳🇴
@nsitas.bsky.social @nsitas.bsky.social 
IPBES @ipbes.net Intergovernmental Platform on #Biodiversity & Ecosystem Services. Denialism/trolling/profanity may result in banning. Re-skoots ≠ endorsements.
www.ipbes.net
linktr.ee/ipbes
Ground Truth Forest News @groundtruth.app Evidence-based forest news.
The truth lies in the numbers. So where’s all the tree data?
Join us as we try to find out 🔍
groundtruth.app
Engr. Farooq @engrfarooq.bsky.social 
Jackie Savitz @jackiesavitz.bsky.social Climate | Ocean Conservation | Sustainability | Transparency | Fisheries | Business Development | Equity | Advisory | Coaching
Michael Mitchell @michaelmitchell.bsky.social I'm running for City Council in Ward 14 Toronto-Danforth. https://toronto-danforth.ca
Quick, what’s the longest word you can find —>
https://bsky.app/profile/michaelmitchell.bsky.social/post/3ml3ws4myq22u
Hilary McMillan @mcmillanhydro.bsky.social Professor of Water Resources at San Diego State University. Watershed hydrology and hydrological processes.
David Ho @davidho.bsky.social Climate scientist; ocean carbon cycle and climate solutions. Professor @soest.hawaii.edu, University of Hawaiʻi at Mānoa; Visiting Faculty, Arizona State University. https://linktr.ee/david_ho
School of Ocean and Earth Science and Technology @soest.hawaii.edu World-class research and academic institution focused on informing solutions to some of the world’s most vexing problems.
📍University of Hawai‘i at Mānoa
🌎 https://www.soest.hawaii.edu
KinarNicholas.bsky.social @kinarnicholas.bsky.social Hydrology Paper of the Day / Professor / Fellow of the Royal Geographical Society / Editor at ConciliARTe / Experimental Filmmaker / Fine Art Photographer
Emily Tucker @emilyltucker.bsky.social Industrial Engineer and Operations Researcher • Assistant Professor at Clemson • Christian • Improving Access to Social Good in Systems Under Strain
Tallys Yunes @tallys.bsky.social Dad • Student of 🎹 • YouTuber: http://youtube.com/c/TallysYunes • College Professor • Consultant • Web: https://thyunes.github.io 
Marco Lübbecke @mluebbecke.bsky.social professor of operations research at RWTH Aachen university, I like mathematical optimization in theory and practice; #orms, posts/likes mine
Bartolomeo Stellato @stella.to Assistant Professor @Princeton ORFE l Real-time optimizer I http://osqp.org developer | From 🇮🇹 in 🇺🇲 | https://stella.to
Senthil Veeraraghavan @senthilv.bsky.social Wharton/Penn Prof.
operations. ephemera. writing. travel. 🇮🇳 🇺🇸
Newsletter: http://senthilv.substack.com
Thiago Serra @thserra.bsky.social Assistant professor at University of Iowa, formerly at Bucknell University, mathematical optimizer with an #orms PhD from Carnegie Mellon University, curious about scaling up constraint learning, proud father of two
Mathieu Besançon @matbesancon.bsky.social Researcher in mathematical optimization at Inria Grenoble, caffeine-fueled computational scientist and open-source developer
Jim Luedtke @optimizer.bsky.social Professor, Stochastic and Integer Optimizer, Dad
Jip J. Dekker @dekker.one OPTIMA Research Fellow working on Modelling Decision/Optimization problems, Programming Languages, and AI at Monash University, Melbourne, Australia.
MiniZinc developer, CP and SAT researcher.
I also talk about music, birds, cycling, and cricket.
Marina Epelman @marinaepelman.bsky.social 
John D. Cook @johndcook.bsky.social Mathematician, data privacy consultant
See also @johndcook.mathstodon.xyz.ap.brid.gy
Ben Grimmer @profgrimmer.bsky.social Visiting Assistant Prof @MITSloan
Assistant Prof @JohnsHopkinsAMS,
PhD in Optimization @CornellORIE
Mostly here to share pretty maths/3D prints, sometimes sharing my research
Guillaume Dalle @gdalle.bsky.social Researcher in machine learning and optimization. Open source enthusiast. Parody songwriter (aka PianoHamster). OCD survivor.
Dirk Van den Poel @dirkvandenpoel.bsky.social Senior Full Professor of Data Analytics, Data Science, Big Data at Ghent University & Flanders Make.
Other interests: Aviation, avgeek, history, WWII. 
angela zhou @angelamczhou.bsky.social assistant prof at USC Data Sciences and Operations and Computer Science; phd Cornell ORIE.
data-driven decision-making, operations research/management, causal inference, algorithmic fairness/equity
bureaucratic justice warrior
angelamzhou.github.io
Juba Ziani @jubaz.bsky.social Assistant professor at Georgia Tech in ISyE. I do mechanism design, differential privacy, fairness, and learning theory, mostly.
Postdoc @Penn; Ph.D. @Caltech; MSc @Columbia and @Supélec.
He/him.
Geoffrey De Smet @geoffreydesmet.bsky.social PlanningAI expert, Timefold co-founder, OptaPlanner creator, complex scheduling and routing, Operations Research, Java, Kotlin, open source, international speaker
Erling D. Andersen @primaldual.bsky.social I spend most of my adult life on convex optimization and www.Mosek.com. In my spare time I like riding my racing bike and follow www.ob.dk.
ORCID: https://orcid.org/0000-0001-6351-8761
Michael Trick @miketrick.bsky.social Dean, Carnegie Mellon in Qatar. Operations Research, Sports Scheduling
Alan Erera @alerera.bsky.social Professor of transportation logistics and supply chain engineering, Georgia Tech. Improving design and control decisions. User and developer of operations research, ML, and AI tools. Site: https://www2.isye.gatech.edu/~alerera/
Yael Grushka-Cockayne @grushkay.bsky.social Senior Associate Dean of Professional Degree Programs and Professor of Business Administration at the Darden School of Business
Austin Buchanan @austinlbuchanan.bsky.social Associate Professor of Industrial Engineering & Management. Interests in #orms #networks #districting. Senior Member of INFORMS. Blogs at https://farkasdilemma.wordpress.com/ Website: https://austinlbuchanan.github.io/
Amin Rahimian @rahimian.bsky.social assistant prof | networks, data, decisions
https://aminrahimian.github.io/
https://sociotechnical.pitt.edu/