Max Roser

@maxroser.bsky.social

— Founder of Our World in Data — Professor at the University of Oxford Data to understand global problems and research to make progress against them.

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.

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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.

Congratulations to the data wizards at @ourworldindata.org who created this elegant tool so you can adjust fertility, mortality & migration rates for any country to see the impact on population sizes & age structures. This is really, really great!! Check it out!! Excellent tool, terrific write up.

Our World in Data@ourworldindata.org · 3mo ago

How will populations across the world change in the 21st century? 🔧 Explore for yourself with our new interactive tool!

An image of the new interactive population simulation tool from Our World in Data, showing South Korea.

📢 We’re looking for a writer to join our team at Our World in Data! What we’re looking for is quite unique: someone who writes excellent narrative articles on large global problems, finds memorable framings to make hard ideas easier to understand, while being genuinely obsessed w/ technical details

We’re looking for a writer

We’re hiring a writer who can make the world’s largest problems understandable to our large Our World in Data audience.

ourworldindata.org

Hey Bluesky hivemind! What are the best data sources for the overall death tolls of wars? So not just dead soldiers, but also civilians, and deaths from disease and starvation due to the fighting. Are Necrometrics and Wikipedia as flawed as they seem — or do they actually hold up to some scrutiny?

This chart documents one of humanity’s greatest achievements, in my view. We just lived through the fastest population growth in human history. It would have been impressive if food supplies had merely kept pace — but on every continent, they grew even faster than the population.

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It has become received wisdom in Brussels and Washington that there is a new “euro-sclerosis”: that the EU economy is lagging the US This view is wrong A little primer on the measurement of productivity – and why reports of the economic death of Europe are greatly exaggerated🧵

A big shift in technology. The purple bars show the sales of cars powered by combustion engines in China. In green, you see the rise of electric cars in recent years.

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What we die from vs. what we hear in the news. Terrorism and homicides account for less than 1% of deaths, but for more than half of all media stories about death in the US — whether in the New York Times, the Washington Post, or Fox News.

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💡New feature: hovering over links to charts shows a preview! Look out for the little chart icon next to a link to know when you can see a preview. Our colleague Ike Saunders had this idea just a couple days ago and he already built it and made it live on our site — thanks, Ike!

"A refreshingly pragmatic and undoomy book." The Guardian just published a great review of @hannahritchie.bsky.social's new book 'Clearing the Air'. The book will be out in 2 days. If you are unsure whether you want to read it, the review gives a good overview: www.theguardian.com/books/2025/s...

Clearing the Air by Hannah Ritchie review – practical climate optimism

A data scientist rebuts 50 arguments against green technology with lively pragmatism and authority

theguardian.com

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.

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