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Thomas Piketty

@thomaspiketty.bsky.social

Professor at EHESS & PSE Co-Director, World Inequality Lab inequalitylab.world | WID.world http://piketty.pse.ens.fr/

6,342 Followers  |  40 Following  |  86 Posts  |  Joined: 17.03.2025
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Posts by Thomas Piketty (@thomaspiketty.bsky.social)

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Skin Tone Penalties: Quasi-Experimental Evidence on Colorism in Football - WID - World Inequality Database This paper studies skin tone discrimination in menโ€™s professional football by comparing shots that narrowly score with those that narrowly miss the goal.

๐Ÿ“New research by @billywoom.bsky.social and @doniakamel.bsky.social uncovers how skin tone shapes player recognition in professional #football โ€” even when performance is identicalโšฝ๏ธ

These biases translate into lower market valuations for darker-skinned players.

Read more โ–ถ๏ธ wid.world/news-article...

10.02.2026 09:21 โ€” ๐Ÿ‘ 21    ๐Ÿ” 8    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Europe, a social-democratic power To assert itself on the world stage, Europe first has to take pride in what it has become since 1945: a democratic, social and transnational power. European countries, which had long been fierce riโ€ฆ

To win the cultural and intellectual battle, Europe must now assert its values and defend its model of development, fundamentally opposed to the nationalist-extractivist model of Trump and Putin
thomaspiketty.wordpress.com/2026/02/03/e...

05.02.2026 11:01 โ€” ๐Ÿ‘ 92    ๐Ÿ” 34    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 2
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2025 highlights:

โœจ Inequality placed on the agenda of the ๐—š๐Ÿฎ๐Ÿฌ ๐˜€๐˜‚๐—บ๐—บ๐—ถ๐˜

โœจ2025 ๐—–๐—น๐—ถ๐—บ๐—ฎ๐˜๐—ฒ ๐—œ๐—ป๐—ฒ๐—พ๐˜‚๐—ฎ๐—น๐—ถ๐˜๐˜† ๐—ฅ๐—ฒ๐—ฝ๐—ผ๐—ฟ๐˜ published in October

โœจ2026 ๐—ช๐—ผ๐—ฟ๐—น๐—ฑ ๐—œ๐—ป๐—ฒ๐—พ๐˜‚๐—ฎ๐—น๐—ถ๐˜๐˜† ๐—ฅ๐—ฒ๐—ฝ๐—ผ๐—ฟ๐˜ published in December

โœจ27 Working Papers authored by 78 researchers

...and more!

๐Ÿ“– Flip through our report heyzine.com/flip-book/22...

29.01.2026 09:38 โ€” ๐Ÿ‘ 24    ๐Ÿ” 17    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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To make the most of the World Inequality Database, consult the DINA Guidelines and other resources: wid.world/methodology/

This 3rd edition includes improved or new:
๐Ÿ”นmacro aggregates
๐Ÿ”นincome and wealth definitions
๐Ÿ”นdata-quality flags
๐Ÿ”นsections on wealth distribution and gender inequality

22.01.2026 08:10 โ€” ๐Ÿ‘ 23    ๐Ÿ” 13    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Un dรฉbat essentiel pour reprendre la main sur lโ€™รฉnergie โšก

๐Ÿ—ฃ๏ธ Avec @lucaschancel.bsky.social et Anne Debrรฉgeas
๐ŸŽ™๏ธAnimรฉ par @jadelindgaard.bsky.social
๐Ÿ“… Jeudi 29 janvier, 19h

Entrรฉe libre. Inscription conseillรฉe โ–ถ๏ธ inequalitylab.world/fr/event/a-l...

@attac.org

21.01.2026 09:55 โ€” ๐Ÿ‘ 12    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Le dรฉcrochage europรฉen est plus une histoire de ralentissement que de point de non retour. La suite dans ma tribune @lemonde.fr fondรฉe sur nos travaux du @wid.world
oรน nous discutons tendances historiques avec R. Loubes, @thomaspiketty.bsky.social et A.-S. Robillard: www.lemonde.fr/idees/articl...

11.01.2026 19:16 โ€” ๐Ÿ‘ 12    ๐Ÿ” 5    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Mapping The Redistributive Debates In Norway And The United States - WID - World Inequality Database Mapping The Redistributive Debates In Norway And The United States This paper studies pro-redistributive arguments in legislative debates in the U.S. Congress and the Norwegian Storting from 2015 to 2...

How do people argue for redistribution in Norway ๐Ÿ‡ณ๐Ÿ‡ด vs the U.S. ๐Ÿ‡บ๐Ÿ‡ธ?

Do debates lean more on emotional fairness arguments or analytical externality arguments?

And what type of argument convinces who?

New study by @mortenstostad.bsky.social, M. Lobeck & C. de Meulenaer โ–ถ๏ธ wid.world/news-article...

19.01.2026 11:46 โ€” ๐Ÿ‘ 14    ๐Ÿ” 5    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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New EQUALS episode is out ft @thomaspiketty.bsky.social

Financial flows to north from south now exceed 1% of global GDP โ€” more than all development aid.

Piketty explains how debt & reserve currencies favor the North and what could actually change it.
๐ŸŽง Tune in: www.equals.ink/p/the-great-...

16.12.2025 13:48 โ€” ๐Ÿ‘ 18    ๐Ÿ” 6    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
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Project 2025, from nightmare to reality The year 2025 was marked by the Trump shock: an unprecedented wave of extreme brutality, unapologetic nationalism, and unrestrained extractivism that shook the world as never before since 1945. To โ€ฆ

To better understand what made the Trump shock possible, and how to confront it in the future, we must turn to its roots, namely, to Project 2025
thomaspiketty.wordpress.com/2025/12/16/p...

16.12.2025 10:11 โ€” ๐Ÿ‘ 38    ๐Ÿ” 18    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 4

Thank you to all WID fellows for their inputs, and in particular to @ricardo-eco.bsky.social, who wrote and coordinated the report, as well @lucaschancel.bsky.social & @rowaida96.bsky.social who edited it.

This report benefited from the support of the @undp.org and the European Union.

10.12.2025 10:24 โ€” ๐Ÿ‘ 25    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Home - WID - World Inequality Database Home The source for global inequality data. Open access, high quality wealth and income inequality data developed by an international academic consortium.

Building on the 2018 and 2022 editions, the #WIR2026 draws on the contributions of over 200 scholars from all over the world affiliated with the World Inequality Lab and contributing to the World Inequality Database wid.world - the largest database on the historical evolution of global inequality.

10.12.2025 10:24 โ€” ๐Ÿ‘ 33    ๐Ÿ” 15    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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You can read the World Inequality Report 2026 in 10 different languages: English, Arabic, Chinese, French, German, Hindi, Portugese, Spanish, Russian, and Thai
wir2026.wid.world/download/

10.12.2025 10:24 โ€” ๐Ÿ‘ 28    ๐Ÿ” 14    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 2
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World Inequality Report 2026 The World Inequality Report 2026 offers the most up-to-date synthesis of international research efforts to track global inequalities.

The 3rd edition of our World Inequality Report is prefaced by @josephestiglitz.bsky.social & Jayati Ghosh.

It comes at a challenging political time, but is more essential than ever to continue the historic movement toward equality.

Explore the report โ–ถ๏ธ wir2026.wid.world

10.12.2025 10:24 โ€” ๐Ÿ‘ 27    ๐Ÿ” 15    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 3
World Inequality Report 2026
YouTube video by World Inequality Lab World Inequality Report 2026

Today, we are publishing our World Inequality Report, which reviews the most recent #inequalitydata and exposes the magnitude of #inequality across time, space and all its dimensions.

๐Ÿ‘‡Share this thread, share the report!
www.youtube.com/watch?v=R67u...

10.12.2025 10:24 โ€” ๐Ÿ‘ 176    ๐Ÿ” 129    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 12
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๐Ÿ“ฐ En Une du @lemonde.fr aujourd'hui :

"L'extrรชme concentration des richesses mondiales"

3 article ร  lire pour dรฉcouvrir en avant-premiรจre Le Rapport sur les inรฉgalitรฉs mondiales 2026

www.lemonde.fr/economie/art...

09.12.2025 13:08 โ€” ๐Ÿ‘ 47    ๐Ÿ” 23    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
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Racial Inequality and Redistribution in Post-Apartheid South Africa - WID - World Inequality Database Racial Inequality and Redistribution in Post-Apartheid South Africa The source for global inequality data. Open access, high quality wealth and income inequality data developed by an international aca...

South Africa remains the most unequal country in the world, with the top 10% earning 70% of all pretax income.

New study by A. Gethin & L. Czajka shows that inequality in 2019 was as high as in 1993.

Racial inequality reduced only because top 10% Black incomes surged.

โ–ถ๏ธ wid.world/news-article...

08.12.2025 15:31 โ€” ๐Ÿ‘ 17    ๐Ÿ” 15    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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๐ŸŸข Climate change hits the poorest the hardest shows *Chapter 2.1 of the 2025 #ClimateInequality Report*

โš ๏ธThe bottom 50% wil bear ยพ of all income losses from climate change by 2050.

Read more in the report ๐Ÿ”— wid.world/news-article...

17.11.2025 10:03 โ€” ๐Ÿ‘ 68    ๐Ÿ” 32    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 3

๐ŸŽดNEW PAPER!๐ŸŽด

Majorities in 11 HICs support:
โœ…Foreign aid
โœ…Debt relief for low-income countries (LICs)
โœ…An international carbon price financing a worldwide basic income
โœ…An international 2% tax on wealth above $1 million with 30% funding LICs
and much more.

bsky.app/profile/wid....
A ๐Ÿงตโฌ‡๏ธ

14.11.2025 15:00 โ€” ๐Ÿ‘ 23    ๐Ÿ” 10    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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๐Ÿ”ด Over 500 economists, including WIL co-director @thomaspiketty.bsky.social, call on world leaders to set up an International Panel on Inequality, as recommended by the Extraordinary Committee's report to the #G20, led by @josephestiglitz.bsky.social

๐Ÿ”—Letter www.equals.ink/p/sign-on-le...

14.11.2025 13:53 โ€” ๐Ÿ‘ 41    ๐Ÿ” 26    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 2
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Le Penโ€™s RN has become the party of billionaires How can France break out of its political deadlock? First, by accepting the idea that democracy requires clear and accepted transfers of power to function properly. Always keeping the same people iโ€ฆ

Le Penโ€™s RN has become the party of billionaires
By voting to save the ultra-rich, the RN has clearly positioned itself as the party of billionaires, as a right-wing party on every level, much like Trumpโ€™s Republican Party
thomaspiketty.wordpress.com/2025/11/11/l...

11.11.2025 10:07 โ€” ๐Ÿ‘ 43    ๐Ÿ” 20    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

Very important read ahead of #cop30 ๐Ÿ‘‡

The 2025 #ClimateInequality Report brings together pioneering research conducted by @wid.world and universities worldwide and was edited by @lucaschancel.bsky.social & @cmohren.bsky.social with inputs from @pbothe.bsky.social @stellamuti.bsky.social

29.10.2025 08:07 โ€” ๐Ÿ‘ 27    ๐Ÿ” 8    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Thx @wid.world's team and fellows!

Over the past 25 years, 200+ researchers worldwide have contributed to the World Inequality Database. While these data remain imperfect and provisional, the global picture of long-term changes in income and wealth distributions is now well established.
(9/9)

27.10.2025 16:41 โ€” ๐Ÿ‘ 9    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Global Justice Project - World Inequality Lab The Global Justice Project (GJP) aims to provide a platform to stimulate research, policymaking, and citizen engagement to shape a fairer, more democratic and sustainable 21st century.

(8/9)
Our interpretation of these long-run findings is that the rise of inclusive, social-democratic institutions has been central to achieving both greater equality and higher prosperity.

More findings coming in the #GlobalJusticeProject, June 2026.
inequalitylab.world/en/global-ju...

27.10.2025 16:41 โ€” ๐Ÿ‘ 16    ๐Ÿ” 4    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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7/9
If we look at wealth inequality, we see that it has always been extremely high, with the bottom 50% holding only a tiny share of total wealth. Despite this, there has been a significant long-run movement toward greater wealth equality in rich countries, particularly in Western and Nordic Europe.

27.10.2025 16:41 โ€” ๐Ÿ‘ 7    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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(6/9)
Our study compares Europe and the United States and challenges the widespread belief that rising inequality in the US since the 1980s has fueled innovation and productivity, especially in high-tech sectors. In fact, we find the opposite.

27.10.2025 16:41 โ€” ๐Ÿ‘ 7    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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(5/9)
If we take Nordic Europe (1990)as a benchmark for equality, and aim even higher, we can envision a world where the gap between top and bottom incomes falls to 3โ€“5ร— by 2100, versus 50-160 today.

27.10.2025 16:41 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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(4/9)
Other inequality indicators tell the same story.

A century ago, the richest 0.1% earned 150โ€“250ร— more than low-income earners in Europe. Today, that gap is down to 8โ€“15ร— in Sweden, Denmark, Norway & the Netherlands โ€” and 15โ€“20ร— in Germany, France & Britain.

A striking drop in inequality.

27.10.2025 16:41 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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3/9 All rich countriesโ€”especially in Western and Nordic Europeโ€”have undergone an enormous compression of income scales during the 20th century, while becoming significantly more productive.In Nordic Europe, the bottom posttax 50% share rose from little more than 15% in 1910 to almost 40% in 1980-90.

27.10.2025 16:41 โ€” ๐Ÿ‘ 7    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Home - WID - World Inequality Database Home The source for global inequality data. Open access, high quality wealth and income inequality data developed by an international academic consortium.

(2/9)
Our new study uses wid.world data (1800โ€“2025)and new global series on productivity and human capital to revisit how the relationship between equality and development has evolved across time and space โ€“ a central question for economists, policymakers, and citizens alike.

27.10.2025 16:41 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

There is a strong positive association between equality and development over the long run โ€” that's what this new study based on our historical series available on wid.world is clearly showing.

Key findings in thread ๐Ÿงต(1/9)๐Ÿ‘‡

27.10.2025 16:41 โ€” ๐Ÿ‘ 69    ๐Ÿ” 39    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 2