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Max Roser

@maxroser

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

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29.10.2023
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Latest posts by Max Roser @maxroser

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?

25.02.2026 13:00 👍 9 🔁 5 💬 6 📌 1
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Four minutes of air conditioning Billions of people have access to far less electricity per day than is required to run an air conditioner for just one hour.

'Four minutes of air conditioning'

The new, excellent essay by my colleague @hannahritchie.bsky.social on energy poverty.

ourworldindata.org/four-minutes...

16.02.2026 22:02 👍 31 🔁 11 💬 0 📌 0
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Data Insights Bite-sized insights on how the world is changing, published every few days

This is from today's 'Data Insight' written by Pablo Rosado and me, and you can find all our team's insights here: ourworldindata.org/data-insights

06.01.2026 12:04 👍 9 🔁 0 💬 0 📌 0
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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.

06.01.2026 12:02 👍 130 🔁 54 💬 10 📌 11

Thank you very much. Again for the grant, but also for this great thread now! And thank you, Michael — I didn't know this backstory, and really appreciate that you pointed out that you see value in what we do.

29.12.2025 06:37 👍 7 🔁 0 💬 0 📌 0

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🧵

12.12.2025 12:32 👍 1165 🔁 604 💬 25 📌 90
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Humans destroyed forests for thousands of years — we can become the first generation that achieves a world in which forests expand Why has humanity destroyed such vast forests? And how can we bring this to an end?

For Our World in Data, I've this article on how we can become the first generation that achieves a world in which forests expand — great to see how this looks in practice in a place where this has already been achieved.

ourworldindata.org/global-fores...

04.12.2025 12:32 👍 17 🔁 3 💬 0 📌 0
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This is what the peninsula looked like in 1900.

04.12.2025 12:31 👍 9 🔁 0 💬 1 📌 0
Man Spends 30 Years Turning Degraded Land into Massive Forest – Fools & Dreamers (Full Documentary)
Man Spends 30 Years Turning Degraded Land into Massive Forest – Fools & Dreamers (Full Documentary) YouTube video by Happen Films

"The problems are immense, but the solutions are immense too."

I loved this short documentary about botanist Hugh Wilson, who spent thirty years protecting and growing a forest in New Zealand.
www.youtube.com/watch?v=3VZS...

04.12.2025 12:05 👍 45 🔁 11 💬 2 📌 1
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Introducing our new, more powerful search Finding what you’re looking for, or discovering something new, has never been easier.

Over the last months, we’ve entirely rebuilt search on Our World in Data — we just launched it:
ourworldindata.org/introducing-...

Let me know what you think. Does it work for you?

06.11.2025 22:21 👍 92 🔁 31 💬 5 📌 0
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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.

24.10.2025 06:34 👍 70 🔁 27 💬 4 📌 3
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Does the news reflect what we die from? What do Americans die from, and what do the New York Times, Washington Post, and Fox News report on?

This is from the new article by my colleagues @antea04.bsky.social , @hannahritchie.bsky.social, and Edouard Mathieu.

ourworldindata.org/does-the-new...

11.10.2025 21:41 👍 27 🔁 4 💬 0 📌 1
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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.

11.10.2025 21:40 👍 152 🔁 63 💬 8 📌 4
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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!

25.09.2025 15:47 👍 35 🔁 6 💬 1 📌 0
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Imagine all cars were electric, and then one Volkswagen engineer comes up with another idea …

#EMobility

11.08.2025 10:46 👍 485 🔁 246 💬 15 📌 30
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Clearing the Air 'We urgently need Hannah Ritchie' GUARDIAN 'Essential reading' RUTGER BREGMAN 'Read this book -- now' MARK LYNAS We can’t afford to delay climate action, but with all the shouting and disagreement i...

It is September 18.

Today, @hannahritchie.bsky.social's book is out!

www.penguin.co.uk/books/462676...

18.09.2025 10:41 👍 17 🔁 4 💬 0 📌 0
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Clearing the Air by Hannah Ritchie review – practical climate optimism A data scientist rebuts 50 arguments against green technology with lively pragmatism and authority

"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...

16.09.2025 20:52 👍 60 🔁 20 💬 2 📌 1
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Our @ourworldindata.org we visualise weekly updates of wildfire data from the Global Wildfire Information System.

Spain was having a pretty low/average year until the past few weeks when it went roaring past previous years.

You can track this data here:
ourworldindata.org/wildfires

22.08.2025 11:31 👍 72 🔁 29 💬 2 📌 2
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Clearing the Air 'We urgently need Hannah Ritchie' GUARDIAN 'Essential reading' RUTGER BREGMAN 'Read this book -- now' MARK LYNAS We can’t afford to delay climate action, but with all the shouting and disagreement i...

My colleague @hannahritchie.bsky.social wrote a new book!

For an author, pre-orders make a huge difference — as they convince bookstores to stock it.

If you are interested in Hannah's writing, you can order it here: penguin.co.uk/books/462676...

28.08.2025 20:42 👍 24 🔁 8 💬 0 📌 1
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Data Insights Bite-sized insights on how the world is changing, published every few days

The full text of the Data Insight is here: ourworldindata.org/data-insights

22.08.2025 17:23 👍 15 🔁 3 💬 0 📌 0
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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.

22.08.2025 17:23 👍 119 🔁 48 💬 6 📌 8
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Duolingo came out fully embracing AI in April, and it’s hard not to read their latest revenue growth numbers alongside this new report on the state of formal language learning in the UK

13.08.2025 12:50 👍 8 🔁 2 💬 1 📌 0
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Most electricity in the Netherlands now comes from renewables.

This is today's @ourworldindata.org Data Insight from my colleague @simonvanteutem.bsky.social.

All our Data Insights are here: ourworldindata.org/data-insights

01.08.2025 08:30 👍 351 🔁 106 💬 17 📌 7
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Every third car in Norway is now an electric car.

26.07.2025 14:23 👍 146 🔁 36 💬 6 📌 0
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At least since the mid-20th century, England has left mass hunger behind. How was this possible? How did English farmers prove Malthus wrong?

My 'Data Insight' on @ourworldindata.org today is about rising yields and falling hunger.

→ ourworldindata.org/data-insights

16.07.2025 15:57 👍 50 🔁 8 💬 4 📌 1
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No, it's not the case that only China is responsible for the large decline in extreme poverty over the past decades.

We wrote about it recently: ourworldindata.org/data-insights/was-the-global-decline-of-extreme-poverty-only-due-to-china

13.07.2025 07:07 👍 111 🔁 42 💬 4 📌 6
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No, it's not the case that only China is responsible for the large decline in extreme poverty over the past decades.

We wrote about it recently: ourworldindata.org/data-insights/was-the-global-decline-of-extreme-poverty-only-due-to-china

13.07.2025 07:07 👍 111 🔁 42 💬 4 📌 6
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My latest Data Insight is about extreme poverty in South East Africa.

In Madagascar, Malawi, Mozambique, and Zambia, extreme poverty is not declining.

12.07.2025 17:14 👍 48 🔁 10 💬 5 📌 1
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In 2014, half of Greece's electricity was generated by coal.

A decade later, that share has fallen to just 6%.

05.07.2025 14:22 👍 1516 🔁 362 💬 28 📌 19
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Two billion people don’t have safe drinking water: what does this really mean for them? For billions, it can mean hours spent collecting water. For almost a million, it means dying from disease.

Two billion people don’t have safe drinking water.

I really like the article of my colleague @hannahritchie.bsky.social, in which she shows what this concretely means for these people, by relying on the portraits of families in Gapminder's Dollar Street project.

ourworldindata.org/what-no-safe...

01.07.2025 14:54 👍 45 🔁 15 💬 0 📌 0