Professor at EHESS & PSE
Co-Director, World Inequality Lab
inequalitylab.world | WID.world
http://piketty.pse.ens.fr/
Thomas Piketty is a French economist who is a professor of economics at the School for Advanced Studies in the Social Sciences, associate chair at the Paris School of Economics (PSE) and Centennial Professor of Economics in the International Inequalities Institute at the London School of Economics (LSE). .. more
From now to June 2026, the #GlobalJusticeProject will help provide answers.
inequalitylab.world/en/global-ju...
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Reposted by Thomas Piketty, Juan Rocha, Olúfẹ́mi Táíwò
⚠️The bottom 50% wil bear ¾ of all income losses from climate change by 2050.
Read more in the report 🔗 wid.world/news-article...
Reposted by Thomas Piketty, Stuart White
Majorities in 11 HICs support:
✅Foreign aid
✅Debt relief for low-income countries (LICs)
✅An international carbon price financing a worldwide basic income
✅An international 2% tax on wealth above $1 million with 30% funding LICs
and much more.
bsky.app/profile/wid....
A 🧵⬇️
Reposted by Thomas Piketty, Rüdiger Bachmann
🔗Letter www.equals.ink/p/sign-on-le...
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 Trump’s Republican Party
thomaspiketty.wordpress.com/2025/11/11/l...
What's new in the report? — A thread🧵
Download the report▶️ wid.world/news-article...
#cop30 #climatejustice #inequality
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
What's new in the report? — A thread🧵
Download the report▶️ wid.world/news-article...
#cop30 #climatejustice #inequality
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.
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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...
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.
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.
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 3–5× by 2100, versus 50-160 today.
Other inequality indicators tell the same story.
A century ago, the richest 0.1% earned 150–250× more than low-income earners in Europe. Today, that gap is down to 8–15× in Sweden, Denmark, Norway & the Netherlands — and 15–20× in Germany, France & Britain.
A striking drop in inequality.
Our new study uses wid.world data (1800–2025)and new global series on productivity and human capital to revisit how the relationship between equality and development has evolved across time and space – a central question for economists, policymakers, and citizens alike.
Reposted by Branko Milanovic, Simon Hix
🔴Our new study revisits this long-running debate — finding a strong positive link between equality and development over the long run.
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Key findings in thread 🧵(1/9)👇
Reposted by Thomas Piketty
🔴Our new study revisits this long-running debate — finding a strong positive link between equality and development over the long run.
Read more▶️ wid.world/news-article...