Climate.us @climate.us We are an independent, nonprofit successor to Climate(.)gov, safeguarding public access to trusted climate data, tools, and information.
Donate: https://www.climate.us/donate
Dani Cosme @dcosme.bsky.social Social affective neuroscientist at Penn studying motivation, resilience, individual & collective behavior change.
Interests: climate, civic engagement, autonomy, solidarity, self & social development, youth participatory action research
dcosme.github.io
Penn Microbiology @pennmicro.bsky.social University of Pennsylvania Department of Microbiology
PennMedCSO @pennmedcso.bsky.social Chief Scientific Officer for Penn Medicine.
This account is maintained by staff in the Office of the CSO. http://bit.ly/2gbO0s4
Ricardo Castillo @ricardocasney.bsky.social Epidemiologist at Penn Medicine, veterinarian, infectious disease researcher, and #OneHealth advocate 🇵🇪 🇺🇸
Prof Peter Hotez MD PhD DSc(hon) @peterhotezmdphd.bsky.social Texas Medical Center (TMC) Pediatrics Professor-Vaccine Scientist-Author; Member, Philosophical Society of Texas, Texas Academy of Medicine Engineering Science Technology, National Academy of Medicine, American Academy of Arts and Sciences
Mackenzie Weaver @mackenzieweaver.bsky.social PhD candidate at the University of Pennsylvania | Climate change researcher with interests in extreme weather, evolving natural hazards, and climate communication | she/her
@joeromm.bsky.social @joeromm.bsky.social 
Communication Neuroscience Lab @falklab.bsky.social We study health and wellbeing, climate action and resilience, and equity @annenbergpenn.bsky.social
www.asc.upenn.edu/research/centers/communication-neuroscience-lab
University of Pennsylvania Environmental Innovations Initiative @pennenvironment.bsky.social Catalyzing solutions to real-world environmental challenges at the University of Pennsylvania. https://environment.upenn.edu/
Penn Climate @upennclimate.bsky.social Vice Provost for Climate Science, Policy, and Action
Email us to connect: climate@upenn.edu
Website: https://climate.upenn.edu/
SETI Institute @setiinstitute.bsky.social Our mission is to lead humanity’s quest to understand the origins and prevalence of life and intelligence in the universe and share that knowledge.
Allie Sinclair @asinclair.bsky.social Assistant Prof of Psychological Sciences, Rice University
🧠 Cognitive neuroscientist/psychologist exploring how we recall the past & predict the future to change behavior
Interventions for health, climate change, & education
https://sinclairlab.rice.edu
Potential Energy Coalition @pe-coalition.bsky.social Climate change is humanity's greatest challenge. Our goal is to awaken the world and dramatically accelerate progress.
potentialenergycoalition.org 
Corina Newsome @corinanewsome.bsky.social Wildlife Biologist | Environmental Justice + Biodiversity Conservation
Yale Program on Climate Change Communication @yaleclimatecomm.bsky.social We conduct research on public climate change knowledge, attitudes, policy support & behavior. Posted events are not endorsements.
https://climatecommunication.yale.edu/
Penn Arts & Sciences @sas.upenn.edu The School of Arts & Sciences is the heart of Penn. Learn about events, news and get involved in the conversation by following us!
https://www.sas.upenn.edu
Visit our online publication, Omnia Magazine: https://omnia.sas.upenn.edu/
Population Aging Research Center @pennaging.bsky.social Population Aging Research Center (an NIA-funded Demography and Economics of Aging center) at the University of Pennsylvania (PSOM & SAS), co-directed by Norma B. Coe and Hans-Peter Kohler & the Get Experience in Aging Research Undergraduate Program.
AGU (American Geophysical Union) @agu.org Official AGU: supporting 500k+ Earth & space science advocates.
🌏 🚀 🔬
Save the Date for #AGU26 in San Francisco, CA, 7-11 December, 2026.
Leigh Stearns @leighstearns.bsky.social Climate and glacier scientist at UPenn.
Marissa Rosen @marissar1.bsky.social Founder & Principal —> digital marcom for leaders in responsible business. Mizzou. Penn. Mother of 2. Born at 340.
UCLA Emmett Institute @uclalawemmett.bsky.social A leading environmental law & climate policy center. We develop solutions to urgent environmental challenges and educate future leaders | http://linktr.ee/emmettucla
Crow's Nest Baltimore @crowsnestbaltimore.bsky.social www.crowsnestbaltimore.com -- We are an art incubator focused on climate action and environmental justice! We provide art studio space for rent, gallery space, and programming. Follow us to stay informed on calls for work & events!
Mann Research Group @mannresearch.bsky.social Dr. Michael E. Mann's research group at UPenn
climate variability and extremes | climate modeling | paleoclimate
https://web.sas.upenn.edu/mannresearchgroup/
Live Science @livescience.com The latest science news, groundbreaking discoveries, and fascinating features from our expert journalists. Your journey of discovery begins at Live Science.
Dr. Lucky Tran @luckytran.com Scientist, science communicator, public health & climate justice advocate
Biology PhD from Cambridge
WHO Fides member, Grist 50 Fixer, Creative Change alum
New Yorker/Aussie
Opinions my own
https://instagram.com/luckytran
http://linktr.ee/luckytran
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
Penn Engineering @pennengineering.bsky.social The official Bluesky page for Penn Engineering at the University of Pennsylvania
Senator Sheldon Whitehouse @whitehouse.senate.gov U.S. Senator from Rhode Island, the Ocean State.
https://linktr.ee/senwhitehouse
Penn Chemistry @pennchemistry.bsky.social The official account of the Department of Chemistry of the University of Pennsylvania.
https://www.chem.upenn.edu
ISSS - University of Pennsylvania @issspenn.bsky.social Welcome to the official page for ISSS at Penn! 🌎 We support Penn’s international students, scholars, and faculty, providing guidance on immigration, cultural integration, and global engagement.
Gavin Schmidt @climateofgavin.bsky.social Climate scientist, juggler. Bikes etc. Blogging at https://www.realclimate.org - data visualization, explainers, and debunking.
@carleysanya.bsky.social @carleysanya.bsky.social Penn professor, energy scholar
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
Vagelos Institute for Energy Science and Technology @vagelosenergy.bsky.social Collaborative and multi-disciplinary energy research at the University of Pennsylvania. #EnergyatPenn
Michael Weisberg @mweisberg.bsky.social Deputy Director of Perry World House and Professor of Philosophy at Penn. Climate diplomat and social ecology researcher in Galapagos. 🇺🇳🇫🇯🇯🇲🇪🇨
Perry World House @perryworldhouse.bsky.social Perry World House is the University of Pennsylvania's hub for global engagement. Follow/Repost/Like is not endorsement.
Philadelphia Inquirer @inquirer.com The Inquirer is your front-row seat to the Philadelphia region. You can support local, impactful journalism at inquirer.com/bsky-subscribe/.
PennLDI @pennldi.bsky.social The Leonard Davis Institute of Health Economics at the University of Pennsylvania (Penn LDI) is a national leader in advancing health policy through transformative research. Explore our impact at ldi.upenn.edu and follow us on LinkedIn!
Kleinman Center for Energy Policy @kleinmanenergy.bsky.social Creating the conditions to advance energy policy outcomes through education, research, and outreach at Penn and beyond. #EnergyAtPenn
SEJ — Society of Environmental Journalists @sejorg.bsky.social SEJ is a membership association of professional journalists dedicated to environmental issues. Our mission is to strengthen the quality, reach and viability of journalism that advances public understanding of environmental issues. linktr.ee/sejorg
NPR @npr.org This is NPR 🎙️
Mongabay @mongabay.com Award-winning nonprofit media outlet publishing global environmental science & news in 8 languages via bureaus in India, Brazil, Africa, Latin America, Indonesia & US: https://mongabay.com
Yale Environment 360 @yalee360.bsky.social An online magazine offering reporting, opinion, and analysis on global environmental issues. Published at the Yale School of the Environment. Our newsletter: e360.yale.edu/newsletter
Climate Desk @climatedesk.org A collaboration of more than a dozen news organizations dedicated to exploring the human, environmental, economic, and political impacts of our changing climate, and sharing our work with a wide audience.
Find us at: ClimateDesk.org
Marianne Lavelle @mlavelle.bsky.social Cover politics, Inside Climate News. If your work on climate change has been affected by the Trump administration, please get in touch with me securely via my Signal username, mlavelle.75 We want to tell your stories, even if you can't speak out publicly.
Vernon Loeb @vernonloeb.bsky.social Executive Editor, Inside Climate News 
Inside Climate News @insideclimatenews.org Pulitzer Prize-winning, nonprofit, non-partisan newsroom dedicated to covering climate, energy and the environment. Our newsletters: http://bit.ly/3mcVORO
Proceedings of the National Academy of Sciences @pnas.org Explore groundbreaking news and research from PNAS, one of the world's most-cited scientific journals. Discover its sibling journal, @pnasnexus.org, both official research journals of the U.S. National Academy of Sciences. Visit www.pnas.org for more info.
Heather Kostick @heatherkostick.bsky.social Live Laugh Launch me into the sun 🌞
Scientist/Writer/Gardener/Cat Foster
📍Philly/Delco/Lenapehoking
Climate change is real.
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
Yale Climate Connections @climateconnections.bsky.social We're a news service that helps you understand climate change and what you can do about it. Get climate solutions in your inbox: https://yaleclimateconnections.org/newsletters/
University of Pennsylvania @upenn.edu Official account for the University of Pennsylvania. Advancing discovery and opportunity toward a better future for all. Managed by the Office of University Communications.
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! 🌮
Pierre Friedlingstein @pfriedling.bsky.social Born at 321 ppm. Climate & Carbon Cycle Scientist. Prof @UniofExeter Directeur de Recherche @CNRS @GlobalCarbonProject
Michael E. Mann @michaelemann.bsky.social Scientist/Author/Speaker; Presidential Distinguished Prof/Director Center for Science, Sustainability & the Media, U. Penn; National Academy of Sciences; American Academy of Arts & Sciences; Royal Society; Tyler Prize
Bluesky @bsky.app official Bluesky account (check username👆)
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