Parth Ahya @Parthion
Chief of Staff at @RenPhil21 linkedin.com/in/parth-ahya-… Washington, DC Joined December 2011-
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This is cool!
How to make time feel like you’re 7 years old again: - Do new things. Changes in activity, setting, etc tell your brain there’s more happening so it feels like you got more time - Lock in on small details. Count the steps, stare at the night sky, look at the world like you…
How to make time feel like you’re 7 years old again: - Do new things. Changes in activity, setting, etc tell your brain there’s more happening so it feels like you got more time - Lock in on small details. Count the steps, stare at the night sky, look at the world like you…
At Our World in Data, we spend much of our time counting deaths. But it’s just as important to know the number of lives saved — even though it is harder to estimate and involves much larger uncertainty. My Data Insight today includes this chart of some estimates.
🚀 Applications are open for the 2026 Horizon Fellowship! Deadline: Aug 28 Join a community of 80+ alums and spend up to two years in DC working on emerging tech policy at agencies, congress, or think tanks. Learn more and apply here: horizonpublicservice.org/applications-o…
What is your favorite writing on change/transitions/choice?
here's a secret to getting opportunities at work that no manager is going to tell you: having a good personality helps They don't have to think twice before introducing you to someone in their network or putting you in front of a customer. You're easier to root for. Spending…
The FDA is sitting on a goldmine of drug development data — 10,000+ page dossiers detailing how drugs are designed, made, tested, and approved. Big Pharma has these in-house. Startups? Locked out. It’s time to fix that. Read my proposal for @IFP on how. ifp.org/biotechs-lost-…
Honestly the thing that motivated me to do this episode was learning that there's less than $200M/year of smart philanthropy on factory farming - GLOBALLY. Just to explain how fucking crazy that is: 1. It's insane how cheap the interventions that will spare BILLIONS of animals…
Honestly the thing that motivated me to do this episode was learning that there's less than $200M/year of smart philanthropy on factory farming - GLOBALLY. Just to explain how fucking crazy that is: 1. It's insane how cheap the interventions that will spare BILLIONS of animals…
Niche request: has anyone made an Anki deck of all the characters in the Mahabharata?
CBO finds that every $1.00 in research and development investment yields $7.00-11.50 in additional output. We shouldn't be cutting federal investment in R&D - we should be expanding it!
CBO finds that every $1.00 in research and development investment yields $7.00-11.50 in additional output. We shouldn't be cutting federal investment in R&D - we should be expanding it! https://t.co/11aqs4WkKm
come work with @Parthion and I on global health and development! renaissancephilanthropy.org/careers/pm-glo…
And you get to work with @Parthion!
We are hiring someone to join @RenPhil21 and help us work on the intersection of science/tech and global development - e.g. better testing for childhood lead poisoning. Pls share and apply!
We are hiring someone to join @RenPhil21 and help us work on the intersection of science/tech and global development - e.g. better testing for childhood lead poisoning. Pls share and apply!
African cities need to build if they’re going to accommodate the ~900 million people moving in btw now and 2050. 🌆 But an African YIMBY mvt will have to go beyond just upzoning & reforming land use regulations. It must address underlying factor markets: land, capital, & labor
African cities need to build if they’re going to accommodate the ~900 million people moving in btw now and 2050. 🌆 But an African YIMBY mvt will have to go beyond just upzoning & reforming land use regulations. It must address underlying factor markets: land, capital, & labor
What should I ask @Lewis_Bollard, Farm Animal Welfare Program Director for OpenPhilanthropy?
Compared to the ethics of AI, the ethics of gene editing feels under discussed relative to its significance. We may soon have the ability to dramatically alter our biology; what lines should we draw around that? Who has done the best writing on this topic?

Nathan 🔎 @NathanpmYoung
24K Followers 3K Following Geopolitics, prediction markets. If you think I'm wrong, community note me. Capital case tweets are literal, others less. I like most people when I meet them.
Matthew Yglesias @mattyglesias
548K Followers 2K Following Slow Boring, cohosting https://t.co/wxUj3JFSFf, Bloomberg columnist
Alexander Berger @albrgr
14K Followers 2K Following Enjoys a good applied micro paper. CEO of @open_phil. Views my own, tweets self-destruct every once in a while.
Michael Nielsen @michael_nielsen
110K Followers 6K Following Searching for the numinous 🇦🇺 🇨🇦, currently live in 🇺🇸 Research @AsteraInstitute https://t.co/maezekzRUb https://t.co/2dWwZKrvrn
Caleb Watney @calebwatney
21K Followers 976 Following co-founder @IFP // the US is the R&D lab for the world and we should act like it
Daniel Eth (yes, Eth ... @daniel_271828
9K Followers 969 Following Researching effects of automated AI R&D | pro-America, pro-tech, & pro-AI safety
Miles Brundage @Miles_Brundage
62K Followers 12K Following AI policy researcher, wife guy in training, fan of cute animals and sci-fi, Substack writer, stealth-ish non-profit co-founder
Pradyumna @PradyuPrasad
10K Followers 2K Following Abundance mindset enjoyer Follow for tweets about: economic growth, AI progress, my side projects and more!
Tessa Alexanian @tessafyi
2K Followers 584 Following let's make nice things with biology 🌱 screening synthesis @IBBIS_bio 🌱 former safety @iGEM, robots @Zymergen🔸10% Pledge #3474 (she)
Rafe Meager (they/the... @economeager
43K Followers 5K Following Aspiring wastrel, applied econometrician. Life, stats and poverty. Also writes https://t.co/UBlzYddnTE about art, death and emotions 🏳️⚧️🏳️🌈🇦🇺
Otis Reid @otis_reid
4K Followers 2K Following Interested in policies and politics to make the world a better, more equitable place. Work at @open_phil. Tweets my own. PhD from @MITEcon. From NC.
Chana @ChanaMessinger
5K Followers 2K Following the stakes and the world and the stars Head of Video for 80,000 Hours - send me content ideas! Opinions are my own, though.
Saloni @salonium
32K Followers 2K Following Co-founder & editor @WorksInProgMag. Writer, Scientific Discovery. Podcaster, Hard Drugs. Advisor, @open_phil. // Prev @OurWorldInData. 🏳️🌈
Joey Politano 🏳️... @JosephPolitano
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Shakeel @ShakeelHashim
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New Liberals 🌐🇺... @CNLiberalism
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nicole ruiz @nwilliams030
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Abi Olvera @Abi0lvera
625 Followers 1K Following I write about AI, global risk, abundance, and progress. Bulletin of Atomic Scientists AI Fellow. Emergent Ventures grantee. Ex-diplomat. Views are my own.
Prajwal Krishna @prajwal2408
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Ian Mitchell @EconMitch
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CY @carolyn_yim
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Emma olier @thsdydrb1
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Nachman Kaul-Seidman @nachmanks331
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David Lang @DavidLangEcon
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Ivyy @iyvee_w
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Benjamin Hause @HauseBenjamin
64 Followers 570 Following building an app to help animals & protect our climate
Alex McLellan @WizardAKA
443 Followers 2K Following Head of health intelligence. Interested in epi, sociology of health, inequality and social epidemiology. Football analytics on the side.
Harvey Sihota @HarveySihota
2K Followers 3K Following Chief Vision Officer @spinalresearch | @neurokinex Founder | futurist | current owner of a spinal cord injury | let's reverse spinal cord injury
Lafa @Lafa990221
22 Followers 2K Following
Be Kind @FrankMassina
25 Followers 362 Following AI. Can you refute this guy 👉 https://t.co/gn4pDyeCqG ?
Sam Enright @Sam__Enright
2K Followers 2K Following Innovation Policy Lead @progressireland, writing @_fitzwilliam, fellow @rootsofprogress @joininteract
Mad Mod Poet God @madmodpoetgod
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Evan Miyazono @emiyazono
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Katelyn Treutel @TreutelKat10097
49 Followers 944 Following
Iman M @iman_moul
195 Followers 3K Following 👩🔬 "Incurably curious". BioxAI. Existentialist. https://t.co/OWajs5aOvN
sehaj pasricha @pasricha_sehaj
319 Followers 666 Following want to visit a zombie planet and be computationally irreducible.
Emory Heathcote @HeathcoteE17143
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Jacynthe Quigley @JacyntheQ28835
52 Followers 3K Following
Whareap @Whareap037439
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Lucia Asanache @lucia_asanache
1K Followers 773 Following Communications for the 21st century @RenPhil21. Passionate about societal progress. Linguaphile above all.
anormative @anormativity
6 Followers 293 Following
Muhammad Azeez @mhmd_azeez
1K Followers 2K Following Software Engineer. C#, Go, and JS. Working on AI Agents, Workflows, and MCP
Joel Gardner @joel_e_gardner
85 Followers 230 Following
Palomino belen funkyy @PalomiSerg16014
230 Followers 2K Following Happiness is the key, be happy for your life,
Aqsa Zaidi @aqsa_atzaidi
236 Followers 1K Following we're not here to stay | affiliations @Georgetown @eistudy1 @QualityCouncil @thegfprogram @LSRJournalism
Cheryl Anne @Cherylanne1970
4K Followers 6K Following ✝️ Christian, God first saved by grace! MAGA! Mission: #FeedWithFaith. Let’s share God's love together ❤️ https://t.co/FuDdqGXCEw
Sarah Meyohas @SarahMeyohas
7K Followers 2K Following deep-tech artist & investor, award-winning filmmaker, working on holograms, plotter pastels, sculpture #bitchcoin
Touxuf @Touxuf366
41 Followers 2K Following
Kasra @kasrak
2K Followers 1K Following building @lightpageapp, a personal notebook that writes back. prev very early team at airtable, watershed
Al Mashal @al_mashal
319 Followers 1K Following Co-founder of @CurrentSurgical. Formerly @medtronic & @CambConsultants. Piled Higher and Deeper @UWMadison. 👐 Badger for life. 🧀
Xawte @Xawte730636
62 Followers 2K Following
Orcralxar @Orcralxar0329
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Eric Bennett @ShapingCodesEB
37 Followers 234 Following Innovator @DroneFuture. Coding enthusiast shaping the future. 💜Coding
Orverxou @Orverxou393223
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William @whwang1_
184 Followers 604 Following Corp Dev @SynthicaEnergy | Interested in macro-finance, governance, and culture Prev: Industrials Banking @JPMorgan, Finance @Nexamp
Mirko Moro @Mirko_Moro
559 Followers 4K Following Professor | Economics | Behavioural Science Centre | U of Stirling. Interests: Policy Evaluation, Environment, Wellbeing, Health
Nathan 🔎 @NathanpmYoung
24K Followers 3K Following Geopolitics, prediction markets. If you think I'm wrong, community note me. Capital case tweets are literal, others less. I like most people when I meet them.
Matthew Yglesias @mattyglesias
548K Followers 2K Following Slow Boring, cohosting https://t.co/wxUj3JFSFf, Bloomberg columnist
Peter Wildeford🇺�... @peterwildeford
21K Followers 318 Following Globally ranked top 20 forecaster 🎯 Working at @IAPSai to shape AI for prosperity and human freedom.
Alexander Berger @albrgr
14K Followers 2K Following Enjoys a good applied micro paper. CEO of @open_phil. Views my own, tweets self-destruct every once in a while.
Kelsey Piper @KelseyTuoc
47K Followers 943 Following We're not doomed, we just have a big to-do list.
Noah Smith 🐇 @Noahpinion
359K Followers 2K Following Writes about economics, posts about rabbits. For serious opinions/analysis, read my blog: https://t.co/KfUxUlCYPz
David Manheim @davidmanheim
9K Followers 2K Following Lecturer @TechnionLive, founder @alter_org_il, emeritus @superforecaster, PhD @PardeeRAND Optimistic on AI, pessimistic on humanity managing the risks well.
Dustin Moskovitz @moskov
72K Followers 499 Following
dylan matthews 🔸 @dylanmatt
72K Followers 1 Following I write for Vox 🔸 I donate 10 percent of my income to effective charities and so can you https://t.co/3L39qEBEue
Michael Nielsen @michael_nielsen
110K Followers 6K Following Searching for the numinous 🇦🇺 🇨🇦, currently live in 🇺🇸 Research @AsteraInstitute https://t.co/maezekzRUb https://t.co/2dWwZKrvrn
Habiba 🔸 @FreshMangoLassi
5K Followers 513 Following Co-founder @SpiroTB - TB screening and prevention charity focused on children https://t.co/sBf6ONGMSL 🔸 10% Pledge #103 with @Givingwhatwecan @habibabanu.bsky.soc
Richard Ngo @RichardMCNgo
62K Followers 2K Following studying AI and trust. ex @openai/@googledeepmind
Caleb Watney @calebwatney
21K Followers 976 Following co-founder @IFP // the US is the R&D lab for the world and we should act like it
Daniel Eth (yes, Eth ... @daniel_271828
9K Followers 969 Following Researching effects of automated AI R&D | pro-America, pro-tech, & pro-AI safety
Hannah Ritchie @_HannahRitchie
80K Followers 1K Following Deputy Editor @OurWorldinData / Researcher at @UniofOxford / Honorary Fellow at @EdinburghUni @EdCentreCC / Not the End of the World: https://t.co/FoINhggvoR
Liam Bright @lastpositivist
62K Followers 4K Following Aspiring philosopher; tolerable human; "amusing combination of sardonic detachment & literally all the feelings felt entirely unironically all at once" [he/his]
Alexey Guzey @alexeyguzey
31K Followers 1K Following just, beautiful future: @openai, @newscienceorg, https://t.co/YTeUJ2NSye
Pradyumna @PradyuPrasad
10K Followers 2K Following Abundance mindset enjoyer Follow for tweets about: economic growth, AI progress, my side projects and more!
Abi Olvera @Abi0lvera
625 Followers 1K Following I write about AI, global risk, abundance, and progress. Bulletin of Atomic Scientists AI Fellow. Emergent Ventures grantee. Ex-diplomat. Views are my own.
Brian Finrow @Finrow
347 Followers 136 Following Founder/CEO at Lumen Bio. I'm a quasi-outsider to the biopharma industry, interested in the economics of drug development.
Sparsh Agarwal @SparshAgarwall
2K Followers 4K Following Reviving Darjeeling | @dorjeteas | @altcarbonindia | Creating Abundance
Michael Lai 赖天宸 @Mtclai
4K Followers 2K Following AI for government @AnthropicAI | elected SF DCCC | community first | before: reimagining early education at Tinycare @MinervaUni @Harvard
Wojciech Zaremba @woj_zaremba
119K Followers 204 Following Co-Founder of OpenAI https://t.co/OCQ3mpf0IN
Nikunj Kothari @nikunj
23K Followers 822 Following partner @fpvventures - investing in seed/A. previous: investing @khoslaventures. first pm @meter, led growth @opendoor etc. love @shimoleejhaveri + 👦👧
Daniel Di Martino �... @DanielDiMartino
43K Followers 6K Following Fellow @ManhattanInst | Economics PhD @Columbia | @DissidentProj Founder | @YAF Board of Advisors | @TFASorg Novak 23' | @USCCRgov NJ SAC | Opinions mine | 🇻🇦
Samay @samaysham
4K Followers 2K Following Holdings @ThriveCapital (hiring), prev. engineering @tryramp
eryney marrogi @eryney_ok
1K Followers 518 Following pronounced like "aaron a" | bioengineering, ml and medicine | Church lab @harvard, AAV @dyno_tx, proteins @Caltech , medicine @uvmvermont
roberto barbero @robbiebarbero
408 Followers 1K Following Dad of 3 great kids. Bioengineer and GJHS Tiger. Served 4+ years @WHOSTP44 & 8+ years @Nanotrap. Now helping fuel a 21st-century renaissance @renphil21
Annette Meeks @meeksgop
2K Followers 2K Following CEO of Freedom Foundation of Minnesota. All tweets are my own and do not necessarily reflect the voice of the Freedom Foundation.
Dwight Crow @dwightcrow
2K Followers 330 Following CEO Additive AI. Ask me about passthrough entities 🤖🚀
Sarah Meyohas @SarahMeyohas
7K Followers 2K Following deep-tech artist & investor, award-winning filmmaker, working on holograms, plotter pastels, sculpture #bitchcoin
Al Mashal @al_mashal
319 Followers 1K Following Co-founder of @CurrentSurgical. Formerly @medtronic & @CambConsultants. Piled Higher and Deeper @UWMadison. 👐 Badger for life. 🧀
Kasra @kasrak
2K Followers 1K Following building @lightpageapp, a personal notebook that writes back. prev very early team at airtable, watershed
Paul Rieckhoff🇺�... @PaulRieckhoff
83K Followers 38K Following Host: @Indy_Americans. Founder: @IndyVetsAmerica @Righteous @AmVets4Ukraine @IAVA @OpLibertyUS. Dad. Husband. Coach. Independent. New Yorker. Veteran.
raylene @emdashry
2K Followers 511 Following In CA, born&raised; eng&prod @stripe & fb is where I spent some of my days; Now in DC @USGSA; @AspenPolicyHub fellow; @USDResponse cofounder; pic @SWatercolour
Shayna Strom @ShaynaLStrom
1K Followers 308 Following President & CEO @equitablegrowth. @ACLU & @OMB44 alum. She/her. Views are my own. Retweets ≠ endorsements.
Christopher Koopman @ckoopman
3K Followers 886 Following CEO @abundanceinst. Meghan's husband. Henry, Danny, Caroline, Jude, Anna, Rose, and Grace’s dad.
Jenny Schuetz @jenny_schuetz
17K Followers 4K Following VP of Housing at Arnold Ventures. Urban economist, author, speaker. Let's make it easier to build housing. She/her.
David Shor @davidshor
79K Followers 4K Following Head of Data Science at Blue Rose Research, based in NYC, originally from Miami. I try to elect Democrats. Views are my own. he/him🌹
Ben Thomas @Ben_Thomas_o7
138 Followers 737 Following Events @rootsofprogress | but my views | economics, housing, technology, progress, bible | personal tinkering & writing at https://t.co/Dp3f8tisBl
Robert Yaman @robert_yaman
959 Followers 406 Following Techno-optimist for animals. Founder @AnimalInnovate, blog at https://t.co/ABtaI7XVwJ. Not vegan. Oh, and I make music: https://t.co/Au4d82pMFw
Janine Leger @JanineLeger
3K Followers 2K Following Founder @joinedgecity and Zuzalu, Emergent Ventures grantee, previously @gitcoin PGF, Social innovation #1 hobby, grounded in fun & adventure
Shantanu Agarwal @shantanuagarwal
266 Followers 72 Following Climate Tech Entrepreneur working on carbon removal. Founder @mati_carbon
Stripe Press @stripepress
26K Followers 61 Following Ideas for progress from @stripe. We publish books about economic and technological advancement.
owl @owl_posting
11K Followers 798 Following technical staff @noetik_ai || ex ml eng @dyno_tx || i write/podcast about bio ml at https://t.co/QPTHsR3fzm || art on https://t.co/SwGiuSjlXF
Alex Jutca @a_jutca
73 Followers 319 Following data + tech @ACDHS | on a mission to build the country's leading R&D lab for local government
Ashlee Vance @ashleevance
180K Followers 4K Following Writing at https://t.co/m6EtO60SiY and host of the Core Memory podcast. 2X NYT best-seller. Filmmaker @HBO (Wild, Wild Space) + @Netflix (Don't Die).
Crémieux @cremieuxrecueil
269K Followers 2K Following I write about genetics, 'metrics, and demographics. Read my long-form writing at https://t.co/8hgA4nNS2A.
Defense Analyses and ... @DefenseAnalyses
2K Followers 191 Following DARC is a new kind of defense think tank
Heike Larson @HeikeLarson
435 Followers 393 Following
David Perell @david_perell
466K Followers 777 Following "The Writing Guy" | Christian | Host: How I Write Podcast | I tweet about writing, AI, and creativity | My writing: https://t.co/SOE9HtxXdi
Sam Donald @Sam_Donald_
58 Followers 126 Following Strategy at Open Philanthropy, Global Health & Wellbeing
Edwin Kite @edwinkite
2K Followers 886 Following Resident at Astera Institute. Planetary science professor, U. Chicago. Mars terraforming, Early Mars, rocky exoplanets.
helena @h_rosengarten2
684 Followers 475 Following building ozempic for sleep goal: compress sleep to 4 hours per day
Anand Muthusamy @mu_anand
827 Followers 544 Following Science & Adventure. Research Fellow @Convergent_FROs. Prev: PhD @Caltech protein eng + neuro; chem bio @Penn, @HHMIJanelia; biotech VC.
Ben Andrew @benwandrew
199 Followers 23 Following Trying to be enjoyably useful, primarily by boosting scientific research and tooling @RenPhil21