Max Roser @MaxCRoser
Data to understand global problems and research to make progress against them. Founder of @OurWorldInData / Professor at @UniofOxford OurWorldInData.org Oxford Joined June 2012-
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Excited to share our new working paper: how much did the US standard of living really rise over the twentieth century — and when? With @bhwittenbrink Using 5.1 million Sears catalog listings, we build a quality-adjusted price index for consumer goods, 1900–1990. Two headline findings: growth was much larger than official statistics imply, and its peak came before WWII, not after. (1/9)
In a hotel room in northeast Nigeria, I opened a leading AI chatbot, turned my laptop toward a former Boko Haram commander, and asked if he'd used it. He nodded. "You type in the question… like 'How can I build a bomb?', and then it tells you how. It is like a human robot. We used it a lot." My new study on how the jihadist terrorist group Boko Haram uses frontier AI with @CamAISciPolicy, covered today in @nytimes 🧵/9
A way to see the depth of energy poverty in different countries today. Given the current electricity supply in different countries, how long could the average person run an air conditioner every day?
Just read that Abdullah Ibrahim has sadly died this week. One of my very favourite musicians. He died at 91 and played wonderful music until his very end. If you don't know him, listen to his Blue Bolero — it's the just the first 2 minutes of this. youtube.com/watch?v=L5i4st…
How will your country's demographics change this century? At Our World in Data we built a tool to let you see for yourself. The UN's assumptions are the starting point. But then you can adjust the three drivers of change — births, deaths, and migration — to what you expect.
@bill_easterly Just read your email. Thank you! I’ll reply to you when I’m back home.
The poorest economies in the world are not achieving economic growth. The consequence is that progress against the very worst poverty is coming to a halt. This is one of the worst problems in the world today, but hardly gets any attention.
@ihoff1 @PikettyWIL Yes, I put this poorly. I didn’t mean to suggest that there is a direct connection between these sentences. I wanted to say that I am with him on big parts of his research and proposals. Especially the fear that very wealthy people have vast power over the rest of us.
@emegodin @PikettyWIL We can do much for other people with our money. It very much isn’t useless. I’ve written about it here if you’re interested: ourworldindata.org/cost-effective…
Have a look at what the report says about inequality. The ratio of the top 0.001% to the bottom percentile is capped at a max of 5. Since the p1 can't be higher than 60k, the top income cannot be higher than 300k. And the proposal isn't focused on redistribution, which I think a shame. Also, of course Piketty's income is much, much higher than €60,000 per year. I think a reasonable estimate for his income from 'Capital' alone is somewhere between €5 and 10 million. And then he wrote other books. He is also one of the best paid professors in France. And he is promoted by the world's most prestigious speaker bureaus (and while Piketty doesn't disclose his fees publicly, Stiglitz asks for 50-100,000$ per talk aaespeakers.com/keynote-speake…. I think Piketty is perhaps a bit lower, but not much). Thomas Piketty is certainly having an annual income much more than 10-times the average that he is proposing for the rest of the country.
Just to explain where I am coming from. I, of course, think it is entirely up to you to decide how you want to live. But I think your proposal is very much impacting the freedom of other people. And so I am curious how you think about the tension between the life you live and your proposal for all of us.
Thank you for answering questions Mr Piketty. I also have one. Like you, I also don’t want to live in a world where some are vastly richer than others and thereby have vast control over others. I’m with you on that. But I’m wondering how you are thinking about yourself in relation to your proposal. Given your work, I’d imagine you earn perhaps 500,000? Or given just how large your sales figures are, probably more? How do you square this with your proposal? Will you stop working as much so your salary goes down to 60,000? Or are you perhaps already giving away almost all your income?
Here is the article: Five million children die every year — what do they die from? ourworldindata.org/five-million-c…
It is from this article 'What is economic growth?' ourworldindata.org/what-is-econom…
A way to see the amazing history of economic growth and declining poverty over the last two centuries.
Much of his recent thinking has focused on what to do as AI becomes rapidly more powerful. This makes his book useful for all of us right now.. His article, "How not to lose your job to AI" gives you an idea of whether you want to buy his book. 80000hours.org/ai/guide/skill…
Most career advice is disappointingly shallow. Which is tragic, given how important a decision it is. A decision worth reading a good book about — and @ben_j_todd is the most thoughtful person on career choice I know. He's spent 15 years researching it, and now his book is out: 80000hours.org/book/
@ben_j_todd @slickskills This chart shows the distributions across world regions.
Hannah Ritchie @_HannahRitchie
79K Followers 1K Following Deputy Editor @OurWorldinData / Researcher at @UniofOxford / Honorary Fellow at @EdinburghUni @EdCentreCC / Not the End of the World: https://t.co/FoINhggvoR
Robin Hanson @robinhanson
124K Followers 772 Following Let’s skip witty banter & talk deep Qs. Books: https://t.co/hpZgEm5DBI https://t.co/iFs9C3J2Ek Advisor @_futarchy @MetaDAOProject @butterygg
Alex Tabarrok @ATabarrok
96K Followers 758 Following Prof of economics at George Mason, co-founder of the online education platform https://t.co/yocRRym80n. Advisor to firms, incl MultiversX, TEAL, Bluechip, 0L Network +
Michael Nielsen @michael_nielsen
120K Followers 5K Following Searching for the numinous 🇦🇺 🇨🇦, currently live in 🇺🇸 Research @AsteraInstitute https://t.co/maezekzRUb https://t.co/2dWwZKrvrn
Stefan Schubert @StefanFSchubert
50K Followers 2K Following I run The Update newsletter. Book: https://t.co/I5zN3WGe0p
Jason Crawford @jasoncrawford
44K Followers 4K Following I write and speak about the history & philosophy of progress. Founder, @rootsofprogress. Host of the Progress Conference. Author, The Techno-Humanist Manifesto.
Our World in Data @OurWorldInData
306K Followers 21 Following Our World in Data is a free, nonprofit website with a mission to increase understanding of the world’s largest problems and drive informed action to solve them.
Nathan 🔎 @NathanpmYoung
31K Followers 4K Following Director, Goodheart Labs. AI-written Community Notes (world first). Part time forecaster @swift_centre. Capital case tweets are literal, others less.
Kelsey Piper @KelseyTuoc
66K Followers 2K Following We're not doomed, we just have a big to-do list.
Dustin Moskovitz @moskov
72K Followers 499 Following
Dina D. Pomeranz 🟣 @DinaPomeranz
69K Followers 11K Following Econ prof @econ_uzh, formerly @HarvardHBS. Affiliate prof @JPAL, @cepr_org. Member BK-IZA, EKM. Co-founder @gain_network_. Board member @HelvetasCH, PxD, IIPF.
Rob Wiblin @robertwiblin
51K Followers 854 Following Host of the 80,000 Hours Podcast. Exploring the inviolate sphere of ideas one interview at a time: https://t.co/2YMw00bkIQ
Saloni @salonium
36K Followers 2K Following Co-founder & editor @WorksInProgMag. Writer, Scientific Discovery. Podcaster, Hard Drugs. Advisor, @coeff_giving. // Prev @OurWorldInData. 🏳️🌈
Spencer Greenberg �... @SpencrGreenberg
35K Followers 7K Following A psychology researcher/mathematician/entrepreneur. I tweet about psychology, society, rationality, science, and philosophy. My book: https://t.co/qd3iRl7q1X
Edouard Mathieu @redouad
33K Followers 256 Following Head of Data & Research at @OurWorldinData • Open data and research on the world's largest problems • Currently off Twitter, please reach out via my website
Amanda Askell @AmandaAskell
106K Followers 661 Following Philosopher & ethicist trying to make AI be good @AnthropicAI. Personal account. All opinions come from my training data.
Caleb Watney @calebwatney
23K Followers 1K Following head of public policy @coeff_giving, previously co-founder @IFP // the US is the R&D lab for the world and we should act like it
Alexis @phgodemaeizu
0 Followers 1 Following Dating & Love expert for modern relationships. Let's navigate your love life wisely! ❤️
Shea 🇺🇸✈️ @heywayfinder
12 Followers 292 Following I live all over the world and make content about it ✈️ Current Location: Guadalajara 🇲🇽
Victor Manuel Ventura... @VictorManud2wd
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Byue @Byue459737
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L'orangerie @lorangerie_
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Ishika Modi @ishikamodi2003
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Diopson @Diopsonsxsg
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Andrew Gao @ndrewgao
284 Followers 259 Following is: software eng at robinhood, was: cornell student, MA resident
kshetrajna @Kshetrajna1996
14 Followers 139 Following धर्मो रक्षति रक्षितः | Dharma Protects Those Who Protect It
Central System One @centralsky1
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Christie @Christiecpbsw
1 Followers 19 Following Blockchain Artist 🖼️ | Crypto Enthusiast 🚀 | Altcoin Expert 📉
Sagar Ingale @Svingale26
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Harsh Nagda @harsh_nagd30333
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Tayfun Balıkcı @Balikcitayf
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Zoujia @Zoujiarb
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Moshiur Chowdhury @moshiur_chy
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Sid Gurav @IamSidGurav
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Pepe Compagni @Pepecompagni
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Govinda Darak @DarakGovinda
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c k @ck0dm0
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Farhan @FarhanJamaal
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Sarvadnya Deshmukh @Sarvadnyajugdu
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Oscar Pachon @OPachon35
211 Followers 3K Following Unal, economía, loco por Millonarios, River Plate y fanático de la Selección Argentina
Aalind sharma (BOSS) @AALINDsh
0 Followers 37 Following
Reichstag @SamirMunde
39 Followers 2K Following
Kalpit Rajpurohit @realrajpurohit
320 Followers 6K Following
pom pandi @JohnKennedbr9p
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Ananya Iyengar @ananya_iyengar_
1K Followers 2K Following data, measurement, methodology, math. she/her.
Kattar Capitalist @Kttr_capitalist
110 Followers 5K Following Amateurs seek the sun, get eaten. Power stays in the shadows.
Abigail Dulles @ADulles81544
3 Followers 10 Following
Thibault Jaigu @ThibaultJaigu
1K Followers 1K Following Co-founder @RequestyAI. I post what trillions of tokens of enterprise AI traffic actually show.
Sedat Erkal @sdtrkl
0 Followers 22 Following
Pittsburgh New Libera... @PGHNewLiberals
758 Followers 655 Following Advocating for abundant housing, accessible transit, technological progress, and clean air & water in the Pittsburgh region Open, optimistic, pragmatic
peter Jack @speaker114514
8 Followers 178 Following
Tom @laure_th
136 Followers 631 Following Software Engineer Symfony | Healthcare APIs | Agentic engineering Science • Freedom • Responsibility
The Architect @architect_669
1 Followers 125 Following
Hannah Ritchie @_HannahRitchie
79K Followers 1K Following Deputy Editor @OurWorldinData / Researcher at @UniofOxford / Honorary Fellow at @EdinburghUni @EdCentreCC / Not the End of the World: https://t.co/FoINhggvoR
Robin Hanson @robinhanson
124K Followers 772 Following Let’s skip witty banter & talk deep Qs. Books: https://t.co/hpZgEm5DBI https://t.co/iFs9C3J2Ek Advisor @_futarchy @MetaDAOProject @butterygg
Alex Tabarrok @ATabarrok
96K Followers 758 Following Prof of economics at George Mason, co-founder of the online education platform https://t.co/yocRRym80n. Advisor to firms, incl MultiversX, TEAL, Bluechip, 0L Network +
Michael Nielsen @michael_nielsen
120K Followers 5K Following Searching for the numinous 🇦🇺 🇨🇦, currently live in 🇺🇸 Research @AsteraInstitute https://t.co/maezekzRUb https://t.co/2dWwZKrvrn
Stefan Schubert @StefanFSchubert
50K Followers 2K Following I run The Update newsletter. Book: https://t.co/I5zN3WGe0p
Jason Crawford @jasoncrawford
44K Followers 4K Following I write and speak about the history & philosophy of progress. Founder, @rootsofprogress. Host of the Progress Conference. Author, The Techno-Humanist Manifesto.
Our World in Data @OurWorldInData
306K Followers 21 Following Our World in Data is a free, nonprofit website with a mission to increase understanding of the world’s largest problems and drive informed action to solve them.
tylercowen @tylercowen
359K Followers 556 Following new book *Talent: How to Identify Energizers, Winners, and Creatives Around the World*, https://t.co/7bU5cTWLzc, Conversations with Tyler, The Free Press.
Peter Wildeford🇺�... @peterwildeford
34K Followers 400 Following Head of Policy @AIPolicyNetwork. Ohioan. World champion forecaster. Former data scientist. Protecting liberty and prosperity in the age of superintelligence.
Kelsey Piper @KelseyTuoc
66K Followers 2K Following We're not doomed, we just have a big to-do list.
Dustin Moskovitz @moskov
72K Followers 499 Following
Eli Dourado @elidourado
45K Followers 513 Following Philanthrocapitalism at @AsteraInstitute. 🚀 tfp/acc
Dina D. Pomeranz 🟣 @DinaPomeranz
69K Followers 11K Following Econ prof @econ_uzh, formerly @HarvardHBS. Affiliate prof @JPAL, @cepr_org. Member BK-IZA, EKM. Co-founder @gain_network_. Board member @HelvetasCH, PxD, IIPF.
Rob Wiblin @robertwiblin
51K Followers 854 Following Host of the 80,000 Hours Podcast. Exploring the inviolate sphere of ideas one interview at a time: https://t.co/2YMw00bkIQ
Saloni @salonium
36K Followers 2K Following Co-founder & editor @WorksInProgMag. Writer, Scientific Discovery. Podcaster, Hard Drugs. Advisor, @coeff_giving. // Prev @OurWorldInData. 🏳️🌈
Spencer Greenberg �... @SpencrGreenberg
35K Followers 7K Following A psychology researcher/mathematician/entrepreneur. I tweet about psychology, society, rationality, science, and philosophy. My book: https://t.co/qd3iRl7q1X
Edouard Mathieu @redouad
33K Followers 256 Following Head of Data & Research at @OurWorldinData • Open data and research on the world's largest problems • Currently off Twitter, please reach out via my website
Amanda Askell @AmandaAskell
106K Followers 661 Following Philosopher & ethicist trying to make AI be good @AnthropicAI. Personal account. All opinions come from my training data.
Caleb Watney @calebwatney
23K Followers 1K Following head of public policy @coeff_giving, previously co-founder @IFP // the US is the R&D lab for the world and we should act like it
Antonia Juelich @AntoniaJuelich
3K Followers 380 Following Research on International Security, Terrorism & Frontier AI @CamAISciPolicy @Cambridge_Uni
Rory Sutherland @rorysutherland
158K Followers 10K Following Vice Chairman, Ogilvy Group The Spectator's Wiki Man.
Robert Inklaar @RobertInklaar
1K Followers 382 Following Professor on Productivity and Welfare @UniGroningenFEB, director GGDC, developer @PennWorldTable, PPP guru, editor @ROIWeditors
Tuna @antea04
179 Followers 65 Following (she/her) data scientist @ owid, puzzle aficionada and generally curious about the world 🎲🍃👩🏻💻 - 📍 ldn
Anthropic @AnthropicAI
1.5M Followers 2 Following We're an AI safety and research company that builds reliable, interpretable, and steerable AI systems. Talk to our AI assistant @claudeai on https://t.co/FhDI3KQh0n.
Claude @claudeai
1.7M Followers 2 Following Claude is an AI assistant built by @anthropicai to be safe, accurate, and secure. Talk to Claude on https://t.co/ZhTwG8dz3D or download the app.
Calum Miller @CalumMillerLD
4K Followers 292 Following MP for Bicester & Woodstock. @LibDems Foreign Affairs spokesperson. Promoted by Bicester and Woodstock Lib Dems, 5C Grange Court, OX14 3NB
Antoine Levy @LevyAntoine
25K Followers 2K Following 🇫🇷 economist @BerkeleyHaas. Economics, literature, football (yeah, sure, "soccer"), and politics. Views are my own - at least, pre-tax.
Noches del Botánico @nochesbotanico
10K Followers 325 Following Ciclo de conciertos referente del verano en Madrid. ¡Vive la música en la naturaleza! 💐🦋 • Info y entradas en nuestra web.
Alex Imas @alexolegimas
34K Followers 2K Following Director of AGI Economics @GoogleDeepMind. Professor at @ChicagoBooth. (on leave) Essays: https://t.co/9qSiQxvdja Opinions are my own.
Bruce Friedrich 🔸 @BruceGFriedrich
12K Followers 484 Following author, Meat (Publishers Weekly top ten new release in science, Spring 2026); founder & president, @GoodFoodInst
Roots of Progress Ins... @rootsofprogress
18K Followers 29 Following Building a culture of progress & an ambitious vision of the future. Subscribe: https://t.co/72IjFgVLKS Support: https://t.co/xM6IPioP87
African School of Eco... @ASE_Africa
2K Followers 599 Following African School of Economics - a conventional Pan-African University of Excellence for comprehensive Human capacity development
Simon Willison @simonw
198K Followers 6K Following Creator @datasetteproj, co-creator Django. PSF board. Hangs out with @natbat. He/Him. Mastodon: https://t.co/t0MrmnJW0K Bsky: https://t.co/OnWIyhX4CH
Erik Hoel @erikphoel
23K Followers 3K Following Placeholder for the scientist and author. Active on Substack not on X. https://t.co/CKyLzw5bHK
Aria Schrecker @Aria_Babu
7K Followers 2K Following Editor @WorksInProgMag 🗞️ Love advice @ https://t.co/eFsM0VUs5A ❤️
Owain Evans @OwainEvans_UK
20K Followers 470 Following Runs an AI Safety research group in Berkeley (Truthful AI) + Affiliate at UC Berkeley. Past: Oxford Uni, TruthfulQA, Reversal Curse. Prefer email to DM.
Henrik Karlsson @phokarlsson
18K Followers 431 Following I write essays at https://t.co/Tf2yohMyM1 Right now thinking about writing-as-thinking, relationships, self-cultivation, LLMs
Matthew Prince 🌥 @eastdakota
269K Followers 300 Following A little bit geek, wonk, and nerd. Repeat entrepreneur, recovering lawyer, and former ski instructor. Co-founder & CEO of Cloudflare (NYSE: NET).
Lizka @LizkaVaintrob
413 Followers 861 Following All views here are my own, except the ones I’m borrowing or trying on. Researching AI preparedness @forethought_org .
Yeling Tan @YelingT
2K Followers 1K Following Political Scientist @BlavatnikSchool; Non-resident senior fellow @PIIE; Globalization, political economy of China
Scott Farquhar @scottfarkas
48K Followers 801 Following Co-Founder of Atlassian, Pledge1%, Tech Council of Australia, Skip Capital. Startup investor. Cyclist. Adventurer. Proud husband and father.
Ana Carbajosa @AnaCarbajosa
7K Followers 4K Following Berlin, Jerusalem, Brussels for El País. Author Merkel+Las tribus de Israel+Isla a la deriva.Editor-in-chief @Planeta_Futuro in London @anacarbajosa.bsky.social
Helen Conford @helenconford
732 Followers 811 Following Publisher for @HutchHeinemann, @MerkyBooks & Cornerstone Press at PRH. Opinions belong to me. There’s a climate crisis underway, and I like toast.
William Hague @WilliamJHague
256K Followers 368 Following @UniofOxford Chancellor. @TheTimes columnist. Former UK Foreign Secretary.
Iosif Lazaridis @iosif_lazaridis
13K Followers 992 Following Research Associate @harvardheb and @hmsgenetics studying history with ancient DNA.
Amelia Wattenberger �... @Wattenberger
35K Followers 5K Following design, AI, web dev, data viz, tools for thought ✨ @shv, previously R&D @GitHubNext, design @AdeptAILabs
Thomas Rotthier @ThomasRotthier
3K Followers 2K Following “He who knows only his own side of the case knows little of that." (JS Mill)
The Man in Seat 61 @seatsixtyone
133K Followers 292 Following Mark Smith, the Man in Seat 61, the chap who runs train travel site https://t.co/HfViO7RbwW. Now on Bluesky: https://t.co/maXZjodeF6
KU Leuven @KU_Leuven
55K Followers 7K Following Nieuws van Europa's meest innovatieve universiteit | News from Europe's most innovative university | Updated by the Press Office | #kuleuven
OxfordSocialSciences @oxsocsci
7K Followers 525 Following Find us on LinkedIn https://t.co/kujQr02OyC & Bluesky https://t.co/RMAjAMX5dz
Nick O'Brien @NickLovesSpain
73K Followers 374 Following Daily insight into Spain's endless charm 🇪🇸✨
Ulrike Malmendier @umalmend
8K Followers 513 Following behavioral@berkeley! Professor of Economics & Finance at UC Berkeley, Co-Director of the Initiative for Behavioral Economics & Finance, Member of 🇩🇪 @GCEE_en
Zvi Mowshowitz @TheZvi
39K Followers 310 Following Blogger primarily on AI and AI x-risk but also other things at Don't Worry About the Vase (SS/WP/LW), founding Balsa Research to fix policy.
Peter Hull @instrumenthull
56K Followers 3K Following Professor @Brown_Economics, studying econometrics, discrimination, education, and healthcare. Editor @AEAjournals, affiliate @nberpubs, scholar @amazon.
Christoph Lakner @ChristophLakner
2K Followers 248 Following Economist @worldbankdata & @WorldBank. Working on poverty, (global) inequality, shared prosperity and top incomes. Tweets are my own.
Daron Acemoglu @DAcemogluMIT
364K Followers 331 Following Institute Professor @MIT, @MITEcon. Co-Director of @MITShapingWork. Author of Why Nations Fail, The Narrow Corridor, and Power & Progress.
Krista Mahr @kristamahr
8K Followers 5K Following Senior international editor at @nytopinion in Washington, D.C. Previous lives in Johannesburg, New Delhi, Hong Kong, Reykjavík and California.
Sloan Foundation @SloanFoundation
14K Followers 126 Following We fund research, engagement and education in science, technology, engineering, mathematics and economics. Also @sloanfoundation.bsky.social
Mahreen Mahmud @mahreenmahmud
2K Followers 313 Following Development economist @UniofExeter | Postdoc @Oxford_CSAE @UniofOxford | @UniKent, @warwickuni, @LifeAtLUMS alumna
Claire Cullen @ccullen_1
820 Followers 3K Following Head of research @youthimpactorg. Ex @Oxford_CSAE, @BlavatnikSchool, @WorldBank & @dfat🇦🇺. Evidence & Impact.
Simon van Teutem @S_VanTeutem
23K Followers 2K Following PhD candidate @NuffieldCollege | columnist @decorrespondent | ex @OurWorldInData | views my own
Kamala Harris @KamalaHarris
21.0M Followers 700 Following Always fighting for the people. Wife, Momala, Auntie. She/her. 107 Days available now.
derek guy @dieworkwear
1.5M Followers 1K Following Menswear writer. Editor at @putthison. Bylines at The New York Times, The Financial Times, Politico, Esquire, and Mr. Porter
Sir Jeremy Hunt MP @Jeremy_Hunt
245K Followers 1K Following MP for Godalming and Ash. Promoted by Jeremy Hunt at 2 Royal Parade, Hindhead, GU26 6TD
Jörg Neugschwender @jneugsch
405 Followers 705 Following --on a break here -- Data Team Manager at @lisdata | LIS & LWS databases | Sociology, PhD | Dipl. Volkswirt | M.A. Social Policy | pension policy and data
Oxford Smith School @TheSmithSchool
6K Followers 957 Following We tackle urgent environmental challenges by bringing public & private enterprise together with world-leading teaching & research @oxfordsmithschool.bsky.social


















