Community Collaborative Rain, Hail, and Snow Network @cocorahs.bsky.social CoCoRaHS is a unique, non-profit, community-based network of volunteers of all ages and backgrounds working together to measure and map precipitation (rain, hail and snow). CoCoRaHs is the largest source of daily precipitation observations in the U.S.
James Marusak @hpbear149den.bsky.social A meteorologist, a loon, a nittany lion, a bear, and a lot more while being on the left.
Originally from Honey Pot, made a stop in Toronto, currently in the north end of St Paul. 
Tom Longden @tomecon.bsky.social 🇦🇺🇨🇿Researcher - 1st generation Uni - working on environmental, energy & health economics @ Western Sydney University Urban Transformations Research Centre
CU Boulder American Meteorological Society Chapter (CUBAMS) @cubams.bsky.social Chapter of the American Meteorological Society @ametsoc.org at the University of Colorado Boulder 🦬
Bernadette Woods Placky @bernwoodsplacky.bsky.social @ClimateCentral.org VP, Chief Meteorologist, #ClimateMatters Director
Proud #PennState Alum, Twin Mom, #StubbornClimateOptimist
#Unless #ShowYourStripes #GSD
Andy Snyder @wxandbiscuits.bsky.social USWFS meteorologist. dogs, native plants and good food. georgia now but midwest is home. he/him/🏳️🌈. opinions my own.
Becky Bolinger @climatebecky.com Climatologist, clouds, warm weather, rock and roll. You may know me from my greatest hits: Assistant State Climatologist of Colorado. Now feeling my way around consulting.
@bismrkbear.bsky.social @bismrkbear.bsky.social https://bsky.app/profile/did:plc:nvmd5kmb7n7uucalnfwv3kvz/feed/top-skeets
Anthony Edwards @edwardsanthonyb.bsky.social Newsroom Meteorologist at the San Francisco Chronicle
Snow lover, Seattle sports fan, University of Washington graduate
sfchronicle.com/author/anthony-edwards/
Leila Belkora PhD, astrophysics @leilabelkora.bsky.social Science writer. Roots in US (NE/CO), Morocco, Switzerland. She/her. Current project: poet Robert Frost as amateur astronomer, to come from Clemson @cupress.bsky.social
Agent Henry Thayer at Brandt & Hochman.
Elizabeth N. Saunders @profsaunders.bsky.social Professor of Political Science, Columbia. New Book: The Insiders' Game: How Elites Make War and Peace https://press.princeton.edu/books/paperback/9780691215808/the-insiders-game
Prof Wieden @profwieden.bsky.social Retired Earth Science faculty and Interim President of Diablo Valley College. Now I travel, take photos and share them. All photos are mine, unless otherwise stated.
Worldview Earth Data 🌍🌱 @wed-explorer.bsky.social Watching our planet 🌍 from space 🛰 to identify climate change, deforestation & natural disasters.
#EarthObservation #ClimateChange #Environment
✖️ x.com/WED_explorer
Jordan Clark, Phd @jordanclark.xyz Climatologist | Co-Founder, Klimo Insights https://klimoinsights.com | Data-driven heat resilience solutions | linkedin.com/in/jordanjclark
Michael Culbert @michaelculbert.bsky.social Research Assistant at The Center for Environment, Community, and Equity with @fisherdanar.bsky.social
Fanatically pro rain and TLT.
He/Him/His
Jonathan Vigh @skywatcher77.bsky.social PhD atmospheric scientist working on hurricanes and weather- and climate-driven risks. Pro-Constitution, pro-democracy, and politically independent. Enrolled member of Seneca Nation of Indians. Wildfire survivor (#MarshallFire). Views mine.
Matthew Cappucci @matthewcappucci.bsky.social Senior meteorologist. MyRadar. Washington Post/NPR/TV too. Atmospheric scientist. Educational consultant. Harvard/MIT ‘19.
Eric Holthaus @ericholthaus.com Meteorologist for REBUILD.US based in Minneapolis. Contributing climate journalist for The Guardian. Author of The Future Earth. Optimistic to a fault.
DM to contact me securely on Signal
Sabrina Ullman @wxullman.bsky.social Dog person™️. University of Miami alumna. Meteorologist/Multi-Media Journalist for WDIO News in Duluth, MN. Opinions are my own.
Cloud Appreciation Society @cloudappsoc.bsky.social We are the society for anyone and everyone who loves the sky cloudappreciationsociety.org.
Bellingcat @bellingcat.com Bellingcat is a global collective uncovering facts to hold power to account. Our work is independent. Our methods are public. Our community is global.
Want to support our charity? bellingcat.com/donate
Kelsey Atherton @atherton.bsky.social War, robots, & bad futures but imagining better. I edit @cipolicy.bsky.social's International Policy Journal, opinions my own. Unitarian Universalist. He/him. Husband to @alymay.bsky.social & father of 2.
Front takes towards enemies.
Lawrence Freedman @ldfreedman.bsky.social Emeritus Professor of War Studies King's College London. Latest Book Strategists and Strategy: collected essays, 2014-2024. Substack Comment is Freed https://samf.substack.com/
Jonathan McDowell @planet4589.bsky.social Astrophysicist
Support the work of Jonathan's Space Report:
https://www.gofundme.com/f/fund-jonathans-space-report-library-transition
Funranium (AKA Phil Broughton) @funranium.bsky.social The Cenobite of Sharing
The Black Blood of the Earth and Steins of Science guy. Everyone’s friendly internet laser safety officer and health physicist. Happy to answer Antarctica questions.
www.funraniumlabs.com
Shashank Joshi @shashj.bsky.social Incoming Washington bureau chief at The Economist. Previously defence editor for eight years.
Visiting Fellow at Department of War Studies, KCL. For speaking engagements: https://chartwellspeakers.com/speaker/shashank-joshi
Gerry Doyle @mgerrydoyle.bsky.social Bloomberg News Global Defense Editor. Novelist, aviation geek, bartender, dad. Ex-NYT, Reuters. Grew up in Midwest, moved to Mideast. Views my own. Wrote a fun book about Chinese missiles: https://tinyurl.com/2p94pay6
Ad astra per aspera
Dan Nexon @dhnexon.net Professor in the Department of Government and the School of Foreign Service at Georgetown University.
Power Politics | Empires | International Order
dhnexon.net | https://www.lawyersgunsmoneyblog.com | duckofminerva.com
🇵🇸Martin “Doomsday” Pfeiffer🖖🏳️🌈 @nuclearanthro.bsky.social Anthro PhD Candidate.
nukes, cats, semiotics, FOIA, existential threats, heritage, nationalism, secrecy, etc.
QUEER
RT/Fave/etc ≠agree
he/him
http://patreon.com/nuclearanthro
http://paypal.me/nuclearanthro
https://osf.io/46sfd/
Stephen Schwartz @atomicanalyst.bsky.social Editor/Co-author, “Atomic Audit: The Costs and Consequences of US Nuclear Weapons Since 1940” • Nonresident Senior Fellow, Bulletin of the Atomic Scientists • Nuclear weapons expert (history, policy, costs, accidents) and tracker of the nuclear “Football.”
Emma Smith @ameliairheart.bsky.social 🏳️⚧️ she/her
Alex Wellerstein @wellerstein.bsky.social Nuclear historian. Prof@Stevens Institute of Technology. Visiting researcher@Nuclear Knowledges, Sciences Po, Paris. Senior Fellow@thebulletin.org. Author: THE MOST AWFUL RESPONSIBILITY (2025). Creator of NUKEMAP. Blogging @ https://doomsdaymachines.net.
Decker Eveleth @dexeve.bsky.social PRC and DPRK strategic forces analyst with CNA. BA Reed College, MA Middlebury Institute. NSF GRFP. 
Pavel Podvig @russianforces.org Russian nuclear forces, nuclear arms control, disarmament, verification. Strictly personal views here.
All coordinates are at http://russianforces.org/podvig
Robert Farley @drfarls.bsky.social Co-founder Lawyers, Guns and Money. Works at Patterson School of Diplomacy and International Commerce at the University of Kentucky
Scott LaFoy @wslafoy.bsky.social Open Source Analysis of ballistic missiles, nuclear weapons, BMD, DPRK, & PRC.
Vice President of Nuclear and Technology Security Programs, Exiger.
Making podcasts over at https://www.armscontrolwonk.com/
All opinions my own.
Matt Korda @mattkorda.bsky.social I count nukes for the Federation of American Scientists + the Stockholm International Peace Research Institute. 🇨🇦 Views my own.
Mike Eckel @mikeeckel.bsky.social Opponent of Quiet Desperation. Contains Multitudes. In Search Of Meanness Or Sublimity. Former Moscow Correspondent. Vladivostok Fanboy. Chaotic Good. @RFERL
Dan Vergano @danvergano.bsky.social Get AIP FYI Science Policy newsletter: https://www.aip.org/newsletters
Director Science Policy News, Editorial at AIP
Washington, D.C.
Opinions my own. Reposts are not endorsements.
Signal: Delta.357
https://www.linkedin.com/in/dan-vergano-93908b4/
Joseph Dempsey @josephhdempsey.bsky.social Research Associate for Defence & Military Analysis,
The International Institute for Strategic Studies
Katie Mummah @nuclearkatie.com Nuclear engineer. nuclear: reactors, history, waste, nonproliferation, space, humor. "Tells uranium's life story". Lives in New Mexico. UW-Madison, UIUC alum. Outdoors when I'm not working. Views mine alone, like/rt not endorsements. she/her
Joseph Trevithick @franticgoat.bsky.social ‘Punk' Journalist, Executive Editor
at The War Zone (https://www.thedrive.com/the-war-zone), and defense and security analyst.
Steffan Watkins 🇨🇦 @steffanwatkins.bsky.social I'm a writer and research consultant specializing in tracking ships and planes using publicly available information.
https://www.patreon.com/SteffanWatkins
Hans Kristensen @nukestrat.bsky.social Director, Nuclear Information Project, Federation of American Scientists. Tracking nuclear arsenals, co-author of Nuclear Notebook, SIPRI Yearbook. Opinions my own.
Website: https://fas.org/initiative/nuclear-information-project/
Bleddyn Bowen @bleddb.bsky.social Associate Professor of Astropolitics | Space warfare | Own views
Books: Original Sin http://bit.ly/3JYbcIe ; War in Space http://bit.ly/34Stplv 🏴🏳️🌈 🚀🛰
Web: https://tinyurl.com/p9pt8n9n
“He doesn’t see the stars - just the vast dark spaces in between.”
Casillic @casillic.bsky.social Critical Infrastructure, High Consequence / High Integrity Systems, Space, Nuclear, Mathematics, Public Health, HPC
Van Jackson @vanjackson.bsky.social The class politics of geopolitics. Newsletter, http://Un-Diplomatic.com. Co-host, https://www.BangBangPod.com; https://www.undiplomaticpodcast.com. 🇺🇸🇵🇭🇳🇿. https://www.vanjackson.org
Jeffrey Lewis @armscontrolwonk.bsky.social William J. Perry Lecturer at Stanford CISAC & Distinguished Research Fellow FPRI. Member of the Bulletin of Atomic Scientists Science and Security Board & National Academies Committee on Int’l Security and Arms Control.
Dan Kaszeta FRHistS @dankaszeta.bsky.social 🇬🇧 London-based. 🇺🇸/🇬🇧 dual citizen. CBRN expert. Freeman of the City of London. Liveryman. "Legal Juggernaut". Anglican. Ex Verger. Author. Fellow of the Royal Historical Society. Scourge of llamas. Former US Army. Former USSS. #NAFO Fella
Aaron Stein @aaronstein1.bsky.social President/CEO @fpri.bsky.social; Podcast w/ blogfather @armscontrolwonk.bsky.social; Recent Substacker; Author: US War Against ISIS. Views are all my own
Jade McGlynn @drjademcglynn.bsky.social Researches and writes on Russia, Ukraine, memory, propaganda 
Jamie Withorne @jamiewithorne.bsky.social Nuclear weapons, international politics, and “”emerging”” technology.
Doctoral Research Fellow in Political Science, University of Oslo
LearnWMD Spreadsheet and Substack: www.jamiewithorne.com
George William Herbert @georgewherbert.bsky.social IT/Cloud/SRE/PE, rockets & missiles, nukes not going bang, space, CS, ships. YIMBY & amateur transit geek. Part time adjunct @ miis.edu teaching Missiles & Missile Defense. I speak for myself only not $DAYJOB. V95.45XA I do #OSINT against nuclear missiles.
Laicie Heeley @laicie.bsky.social Founder & CEO @inkstickmedia.com. Host of Things That Go Boom from PRX & Inkstick. Former wonk.
Laura Grego @lauraegrego.bsky.social Senior scientist & research director, Global Security Program, ucsusa.org. Space, missile defense, nuclear weapons. 
Nick Kodama @nickkodama.bsky.social PhD candidate at Georgetown | Researching nukes, IR, Japan, East Asia | Also posting photos of my cat and food.
Tom Bielefeld @tombielefeld.bsky.social Researcher/Consultant/Trainer #NuclearSecurity & #Nuclear #Nonproliferation; @INS_Forum; @WINS_org; formerly Harvard's @BelferCenter; Chronotype/B, from #Bremen (Contact via https://sites.google.com/site/tombielefeld/)
Stephen Young @atomicwonk.bsky.social Advocate for more sensible nuclear weapons policies, firm believer that we should not live in a world where hundreds of millions could be dead in an hour. Associate Director for Government Affairs, Global Security Program, Union of Concerned Scientists
Catherine Dill @catherinedill.bsky.social Formerly known as atomic_pickles, but still thinking about atomic pickles. Fancies: gardens, birds, mountains & rocks, satellites, Delftware, N95s. She/her. Only personal views reflected.
Shea Cotton @sheacotton.bsky.social 
Dr. Taylor Loy @tayloraloy.bsky.social Virginia Tech Postdoc (STS), nuclear energy/nonpro. Former SRO instructor nuke worker. he/him.
https://tritiummatters.org
Diss:
https://hdl.handle.net/10919/120638
Day One:
https://fas.org/publication/fusion-energy-leadership-tritium-capacity/
James Cameron @jjjcameron.bsky.social Professor of Modern North American History at the University of Oslo, Norway. Nuclear strategy and arms control.
Gregory Kulacki @gkucs.bsky.social Director, East Asia, Global Security Program, Union of Concerned Scientists. Non-Resident Fellow, Research Center for the Abolition of Nuclear Weapons at Nagasaki University. Cross-cultural sojourner.
Michael Duitsman @duitsmanms.bsky.social Fellow at the Foreign Policy Research Institute. Rocket propulsion and radiological security (usually not at the same time). Opinions my own. Faves/RTs ≠ endorsements
Institute for the Study of War @thestudyofwar.bsky.social ISW is a policy research organization focused on U.S. national security. Email: press@understandingwar.org. For more: https://linktr.ee/understandingwar
Dmitri Alperovitch @dmitri.silverado.org Geopolitics, Russia, China, Cyber
Chairman @silverado.org
Author of WorldOnTheBrink.com
Host GeopoliticsDecanted.com podcast
Founder Alperovitch Institute for Cybersecurity Studies at Johns Hopkins SAIS
Co-Founder CrowdStrike
@DAlperovitch elsewhere
Ulrike Franke @rikefranke.bsky.social Senior Fellow at European Council on Foreign Relations. #Drone politics PhD @ox.ac.uk. Teaches at @SciencesPo.bsky.social. Writes about all things #Germany #Defence #miltech. Podcast host at @SicherheitsPod.de & LeCollimateur
Michael Kofman @michaelkofman.bsky.social Senior Fellow, Carnegie Endowment. Defense analysis with a focus on the Russian and Ukrainian militaries.
Aric Toler @aric.bsky.social Visual Investigations at The New York Times
Constanze Stelzenmüller @constelz.bsky.social Director CUSE, Germany explainer etc. @ Brookings; FT contributing columnist; Wizards Fan (I know). When the going gets tough, the tough go blonde. Pic: Marc Darchinger. Views my own, people.
Alexander Clarkson @aphclarkson.bsky.social Senior Lecturer for European Politics and History at King's College London. Opinions my own. RT not always endorsement.
Also to be found at @APHClarkson
https://www.ullstein.de/werke/die-macht-der-diaspora/hardcover/978354910
Seva @seva.bsky.social book: http://amzn.to/2oRD2yG. substack: https://hegemon.substack.com/
Stephanie Carvin @stephaniecarvin.bsky.social Former national security analyst, Associate Professor, Senior Fellow Centre for Strategic Statecraft. Research on national and international security based in Ottawa, Canada 🇨🇦
Sam Greene @samagreene.bsky.social Professor of Russian Politics, King's College London. Political sociologist. Progressive. Co-author, Putin v the People. 🇬🇧/🇺🇸
Paul Poast @profpaulpoast.bsky.social International Relations and Foreign Policy. UChicago Prof. Chicago Council Fellow. WPReview Columnist. Primarily on LinkedIN.
https://www.paulpoast.com/
Nada Bakos @nadabakos.bsky.social Former CIA analyst and social media alum. Now I mainly focus on being outdoors.
Bruno Tertrais @brunotertrais.bsky.social Deputy Director, Fondation pour la recherche stratégique.
Non-Resident Fellow, Institut Montaigne.
Geopolitics, strategy and stuff.
Personal account.
b.tertrais@frstrategie.org
Books: tinyurl.com/bdzbxnyx
Steve Saideman @smsaideman.bsky.social #CivMil relations; Director, @CdsnRcds; saideman.blogspot.com; Co-host, Battle Rhythm podcast cdsn-rcds.com/battlerhythm, International Relations professor. Used to study nationalism/ethnic conflict.
Sergey Radchenko @radchenko.bsky.social Historian of the Cold War and after. Wilson E. Schmidt Distinguished Professor, Henry A. Kissinger Center for Global Affairs, Johns Hopkins School for Advanced International Studies. The author of “To Run the World.”
Jim Goldgeier @jimgoldgeier.bsky.social Senior advisor, Bridging the Gap; Fellow at Center for Advanced Study and FSI Research Affiliate, Stanford; Non-resident fellow, Kennan Institute. Was a professor for 35 years and a dean for six. Views are my own. www.jamesgoldgeier.com.
Olya Oliker aka Dr. Olga Oliker (she/her) @olyaoliker.bsky.social Director, European Security @crisisgroup.org / Feminist / Migrant / ❤️ punk rock (but not only) / Opinions own / Endorsements clearly marked / podcast: https://www.crisisgroup.org/pod/europe/war-peace
Marco Langbroek @marcolangbroek.bsky.social Lecturer in optical Space Situational Awareness at Delft Technical University, faculty of Aerospace. Spy sats, missiles, meteorites, asteroids. Asteroid (183294). Lapsed Archaeologist (PhD). Rowing. CFS. Opinions my own.
blog: http://sattrackcam.blogspot.c
Fabian Hoffmann, PhD @frhoffmann.bsky.social Doctoral Research Fellow at the Oslo Nuclear Project, University of Oslo. Defense policy, missile technology, and nuclear strategy.
Weekly analysis of missile tech, nuclear strategy, and European deterrence 👇
https://missilematters.substack.com/subscribe
Dave Schmerler @schmerler.bsky.social 
Ruth Deyermond @ruthdeyermond.bsky.social Senior Lecturer, Department of War Studies, King's College London. Russian foreign & security policy, US foreign policy, US-Russia relations, European security. Views are my own.
Ankit Panda @nktpnd.bsky.social Stanton Senior Fellow, Carnegie Endowment for International Peace; Author of ‘THE NEW NUCLEAR AGE’ (Polity) & ‘KIM JONG UN AND THE BOMB’ (Hurst/Oxford)
Subscribe to my newsletter (Nukesletter): https://panda.substack.com/
Andrey Baklitskiy @baklitskiy.bsky.social Nukes at UNIDIR. Views own, RT/❤️ ≠ endorsement
Andrew Facini @andrewfacini.com Senior Fellow, @councilonstrategicrisks.org working on nuclear weapons policy. Teaching and such at Harvard Extension. Views my own.
Nuke policy starter pack! https://go.bsky.app/8jiQV43
Adam Mount @handle.invalid Deterrence, nuclear strategy, progressive foreign policy.
Fmr. FAS, CAP, CFR, Ph.D. Government, Georgetown.
Bio: ajmount.com.
Banners: @UAHIRISE.- W woolaf @woolaf.bsky.social Nuclear nerd and lover of baseball. Owner of the cutest dog in the world.
Jessica Lovering @lovering.bsky.social Researching the future of nuclear in Sweden at Uppsala University. Senior Fellow w/ Nuclear Innovation Alliance; Fellow w/ Energy For Growth Hub; PhD in Engineering & Public Policy from Carnegie Mellon.
https://jlovering.substack.com/
Simon Frankel Pratt @simonpratt.bsky.social Political scientist at the University of Melbourne. Formerly of other places. Research: war, intelligence, innovation, and normative change in international politics. Cat paparazzo. He/Him 🇨🇦🏳️🌈✡️
Brian Weeden @brianweeden.bsky.social Space policy wonk, former engineer, husband, father, Dungeon Master, and all around geek. I post things I find insightful, informative, or provocative
Shower Cat @shower-cat.bsky.social A cat who took showers. 💔 Kittens who romp. 😻 My hooman is interested in cats, politics, Russia, Ukraine, and Central Asia, and nuclear weapons and nonproliferation but mostly cats
Togzhan Kassenova @togzhankassenova.bsky.social Almaty-born, DC-based expert on nuclear politics and financial crime prevention
Author of Atomic Steppe: How Kazakhstan Gave Up the Bomb (Stanford University Press, 2022)
http://www.togzhankassenova.com
Al Mauroni @progmil.bsky.social NatSec analyst, WMD and nukes, sci-fi enthusiast, gamer 
Andreas Persbo @persbo.bsky.social Programme Director at the One Earth Future Foundation, formerly with UNIDIR, European Leadership Network, and VERTIC.