Very important read ahead of #cop30 👇 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

There is a strong positive association between equality and development over the long run — that's what this new study based on our historical series available on wid.world is clearly showing. Key findings in thread 🧵(1/9)👇

Do individuals move ⤴️ or⤵️ the income ladder because of jumps in labor or capital income, or both? 👉Upward mobility is primarily driven by labor income but almost never by capital alone, find @marcoranaldi.bsky.social @joelliambuehler.bsky.social @robertoiacono.org ▶️ wid.world/news-article...

Félicitations @lucaschancel.bsky.social pour ce livre magnifique Il est impossible de faire face à nos défis climatiques sans repenser fondamentalement la structure des inégalités et de la propriété: qui possède l'énergie et pour quoi faire www.seuil.com/ouvrage/ener...

Rethinking world trade When setting tariffs, Trump has followed a narrowly nationalist and rather chaotic logic. The opposite approach is needed: Tariffs should be set based on universal and predictable principles. www.lemonde.fr/blog/piketty...

Nouvelle étude de @yajnagovind.bsky.social @paolosantini.bsky.social & E. Derenoncourt confirme l’importance du facteur discriminatoire sur le marché du travail en 🇫🇷. Les minorités racisées subissent de fortes pénalités salariales. Être né.e en France réduit ces écarts, sans les faire disparaître.

From trade wars to @un.org talks, global tax cooperation is at stake. Oct 2, Paris, #ICRICT Commissioners, policymakers & civil society debate how to build a fairer international tax system amid great-power rivalry. ⏰6–8PM 📍Paris School of Economics Inscriptions: shorturl.at/I6Kvp #TaxThePower

Intl' taxation is caught in great power struggles, as Donald Trump attempts to dismantle digital services & global minimum taxes. Join @josephestiglitz.bsky.social @thomaspiketty.bsky.social @manonaubryfr.bsky.social & Valerie Hayer, on Oct 2! 📍@pse.bsky.social ⏰6 PM Register: shorturl.at/I6Kvp

Don't miss tomorrow's event with @thomaspiketty.bsky.social on global #inequality including preliminary results from the #GlobalJusticeProject. 📍In-person and online public event 🎟️ Registration www.lse.ac.uk/events/globa... @lsepress.bsky.social

📆 Save the date: the 3rd edition of the World Inequality Conference will take place on 4–5 June 2026 at Paris School of Economics @pse.bsky.social The call for papers is open until December 1. 🔗 More details & submission: inequalitylab.world/en/event/wor...

Net private wealth has skyrocketed since 1980 - this is one of the main findings of a new @wid.world study overturning the Kaldor’s facts. More findings in thread 🧵 🔗Study wid.world/news-article...

"Un pays qui refuse de faire payer à ses plus riches citoyens le même impôt que les classes moyennes et populaires, qui renonce à toute possibilité... c'est un pays qui abandonne sa souveraineté" a dit notre commissaire @thomaspiketty.bsky.social dans BFMTV

Notre niveau de dette publique est aussi élevé qu'au moment de la révolution française. L'histoire montre que ce niveau d'endettement se règle toujours, au moins en partie, par des mesures exceptionnelles de redistribution du patrimoine privé, pas par l’austérité. www.radiofrance.fr/francecultur...

On the 10th anniversary of *Capital in the 21st Century* and 5th of *Capital and Ideology*, @thomaspiketty.bsky.social shared key lessons from his work + insights on global inequality transformations, emphasizing reasons for optimism👇 wid.world/news-article...

Disponible en librairie >>> www.seuil.com/ouvrage/ce-q...

Now available in english *A History of Political Conflict. Elections and Social Inequalities in France 1789-2022* 📚 Our book with Julia Cagé is out at @harvardpress.bsky.social >>> www.hup.harvard.edu/books/978067... All data sets available below 👇

Pourquoi l’histoire de l’énergie est-elle liée à celle des inégalités ? Comment penser la transition énergétique à l’aune des conflits de répartition des richesses ? 📆 Rencontre & dédicace le 9 octobre avec @lucaschancel.bsky.social ✍️ Gratuit sur inscription inequalitylab.world/fr/event/deb...

Who votes for whom, and why? These are questions that have been with us since the dawn of democracy. In their new book, A History of Political Conflict, Julia Cagé and Thomas Piketty comb through more than 200 years of data to find answers. Learn more: bit.ly/4lFvV5K @thomaspiketty.bsky.social

What should be publicly owned, or privatised? @ewanmg.bsky.social builds develops a theory of when public or private ownership leads to better outcomes, using comparative data from OECD countries in sectors such as water, rail, electricity, and telecommunications ▶️ wid.world/news-article...

Since COVID, US wage inequality has sharply narrowed -undoing ~⅓ of the rise since 1980 🇺🇸 @adamaboobaker.bsky.social & P. Skott show why tight labor markets alone can’t explain it: policy design, turbulence & shifting power matter. Read more▶️ wid.world/news-article...

We've updated wpid.world to cover recent trends in political polarization around the world! 🌍 Among striking results, the 2024 U.S. election saw educational divides that are unprecedented in modern history 👇 explore.wpid.world/intime/educ/vo

Inequalities in exposure to environmental risks – flooding and subsidence – are high and vary across home ownership status in France (owner-occupants, and owners of rental, second, or vacant homes) [🧵1/6] New study by Thomas Bézy 🔗 wid.world/news-article...

How should we analyze the new wave of trade tensions that gripped the world in 2025? To better understand the issues at stake, the World Inequality Lab @wid.world recently published a historical study on global trade and financial imbalances since 1800 www.lemonde.fr/blog/piketty...

Children in Sub-Saharan Africa receive just 3% of the public education funding available to their peers in Europe and North America. 🧵A thread on a NEW STUDY written with @nitin-k-bharti.bsky.social A. Gethin @markjmn.bsky.social @zhexunmo.bsky.social & L. Yang. 🔗 wid.world/www-site/upl... [1/10]

📄In this new theory working paper, S.Subramanian makes the case for combining across the board measures with tailender indices into a composite index to measure and mitigate inequality. Read more: wid.world/news-article...

Congratulations @cmtneztt.bsky.social & co-authors for this study on wealth inequality in Spain - the first of its kind at the autonomous region level. The new Spain Wealth Atlas will be a very useful tool to track the evolution of wealth inequality across space and time. spainwealthatlas.world

What would a just distribution of socio-economic and environmental resources look like at the global level from 2025 to 2100 – both between and within countries? From now to June 2026, the #GlobalJusticeProject will help provide answers. inequalitylab.world/en/global-ju... [1/5]🧵

By opposing the 2% minimum wealth tax on billionaires, the French Senate has revealed just how out of touch it is with the issues of our time. www.lemonde.fr/blog/piketty...

En s’opposant à l’impôt plancher de 2% sur les milliardaires, le Sénat vient de montrer à quel point il était déconnecté des enjeux de notre époque. www.lemonde.fr/blog/piketty...

Work time reduction and gender equality should accelerate their historical trajectory in the 21st century. 🧵A thread on a study with @marie-andreescu.bsky.social, R. Loubes & A.S Robilliard [1/8] wid.world/news-article...

Colonial extraction and unequal exchange have shaped two centuries of North-South inequality. A thread on the new study written with @gatonievas.bsky.social [A thread 1/8🧵]

📆Lundi 16 juin @arnaudorain.bsky.social sera à PSE pour nous présenter son dernier essai sur le "capitalisme de la finitude" - un ouvrage essentiel pour comprendre les bouleversements actuels et les recontextualiser dans une perspective historique. inequalitylab.world/fr/event/le-...

Inequality of inflation and high volatility is anti-poor and requires immediate policy intervention, warn Rohan Bansal & @prachibansal.bsky.social in this new WP 📝🇮🇳 Read more🔗 wid.world/news-article... #inflation #india #inequality

New study by @pbothe.bsky.social @lucaschancel.bsky.social @cmohren.bsky.social outlines potential pathways for global inequality by 2050. ⚠️Within-country redistribution will be needed to curb global inequality and face climate shocks. More in thread 🧵[1/3] wid.world/news-article...

New study by @marie-andreescu.bsky.social, @thomaspiketty.bsky.social, R. Loubes & A.S Robilliard offers key insights into the historical evolution of working hours and the "real" gender pay gap, once unpaid domestic work accounted for. More in the thread below🧵[1/7] ▶️ wid.world/news-article...

🗓️Inscrivez-vous pour la RENCONTRE-DEBAT autour de "A Land For All" lundi 19 mai 17h à l'EHESS 54 bvd raspail ▶️ cessp.cnrs.fr/rencontre-de... + d'infos dans le fil ci-dessous

In 1825, the French state imposed a tribute on Haiti to compensate slave owners for their loss of property. It is now time to start concrete discussions about restitution. www.lemonde.fr/blog/piketty...

RDV le lundi 16 juin pour explorer les transformations du capitalisme mondial du XVIe siècle à aujourd'hui🗺️ Présentation d'@arnaudorain.bsky.social en présence de @thomaspiketty.bsky.social & @lucaschancel.bsky.social. 👇Infos et inscriptions inequalitylab.world/fr/event/le-... 📍@pse.bsky.social

Over two centuries, global work hours fell - but only through massive political mobilization and legislative reforms. Work time reduction should continue its historical trajectory in the 21st century, as part of the broader struggles to preserve planetary habitability and achieve social justice.

We call on the EU to endorse a confederation of the states of Israel and Palestine in one homeland, following the principles of A Land for All, a political movement that includes Palestinians & Israelis from across the homeland Please sign & get involved👇 www.2s1hdeclaration.com

🔴REPLAY available! Catch @lucaschancel.bsky.social's keynote from the #TaxingBillionaires' conference (April 8): ☑️ Latest findings on global #wealthinequality ☑️ Reflections on billionaire #taxation ☑️ World Inequality Database's methodology and tools ▶️ Watch here youtu.be/WffeqGy-LKI?...

Congrats @s-stantcheva.bsky.social! It's great to see that both the EEA (Julia Cagé) and the AEA(Stefanie Stantcheva) awarded their top award this year to inequality scholars and WID fellows.

Congratulations to @rowaida96.bsky.social for this very important historical work – a first of its kind in any country or land reform context.

L’Europe doit soutenir la réforme du FMI et de la Banque Mondiale, de façon à sortir du système censitaire actuel et de donner toute leur place à des pays comme le Brésil, l’Inde ou l’Afrique du Sud. www.lemonde.fr/blog/piketty...

Europe must support the reform of IMF and World Bank in order to move away from the current censitary system and give countries like Brazil, India and South Africa their rightful place. www.lemonde.fr/blog/piketty...

The wealth of billionaires is growing very fast (7-9%/year). Let's be clear: a 2% wealth tax is an important first step, but it won't be enough to stabilize the ⤴️ concentration at the top. 5-10% is the minimum to stop inequality from rising. These questions must be part of open, democratic debates.

“Moving From the Billionaire Age to the Age of Billionaire Taxation” – A snapshot of @lucaschancel.bsky.social's keynote at the #TaxingBillionaires Conference 🧵 Full video soon available. 1/5👇

"We also need broader reforms to address the challenges of the 21st Century. Beyond taxation, there are structural reforms of the international monetary and trade systems that could bring redistribution of greater magnitude than the tax system strictly speaking” [2/2]

"A 2% tax on billionaires is a first step – but it’s important not to stop there. Building public confidence in the idea that it's truly possible to target the ultra-wealthy - billionaires in particular - is essential.", said @thomaspiketty.bsky.social at #TaxingBillionaires conference [1/2]