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.
— Professor at the University of Oxford
Data to understand global problems and research to make progress against them.
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?
ourworldindata.org/introducing-...
Let me know what you think. Does it work for you?
Introducing our new, more powerful search
Finding what you’re looking for, or discovering something new, has never been easier.
ourworldindata.org
November 6, 2025 at 10:21 PM
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?
ourworldindata.org/introducing-...
Let me know what you think. Does it work for you?
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.
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.
October 24, 2025 at 6:34 AM
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.
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.
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.
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.
October 11, 2025 at 9:41 PM
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.
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.
Reposted by Max Roser
💡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!
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!
September 25, 2025 at 3:47 PM
💡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!
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!
Reposted by Max Roser
Imagine all cars were electric, and then one Volkswagen engineer comes up with another idea …
#EMobility
#EMobility
August 11, 2025 at 10:46 AM
Imagine all cars were electric, and then one Volkswagen engineer comes up with another idea …
#EMobility
#EMobility
It is September 18.
Today, @hannahritchie.bsky.social's book is out!
www.penguin.co.uk/books/462676...
Today, @hannahritchie.bsky.social's book is out!
www.penguin.co.uk/books/462676...
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...
www.penguin.co.uk
September 18, 2025 at 10:41 AM
It is September 18.
Today, @hannahritchie.bsky.social's book is out!
www.penguin.co.uk/books/462676...
Today, @hannahritchie.bsky.social's book is out!
www.penguin.co.uk/books/462676...
"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...
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
www.theguardian.com
September 16, 2025 at 8:52 PM
"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...
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...
Reposted by Max Roser
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
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
August 22, 2025 at 11:31 AM
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
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
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...
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...
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...
penguin.co.uk
August 28, 2025 at 8:42 PM
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...
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...
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.
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.
August 22, 2025 at 5:23 PM
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.
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.
Reposted by Max Roser
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
August 13, 2025 at 12:50 PM
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
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
This is today's @ourworldindata.org Data Insight from my colleague @simonvanteutem.bsky.social.
All our Data Insights are here: ourworldindata.org/data-insights
August 1, 2025 at 8:30 AM
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
This is today's @ourworldindata.org Data Insight from my colleague @simonvanteutem.bsky.social.
All our Data Insights are here: ourworldindata.org/data-insights
Every third car in Norway is now an electric car.
July 26, 2025 at 2:23 PM
Every third car in Norway is now an electric car.
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
My 'Data Insight' on @ourworldindata.org today is about rising yields and falling hunger.
→ ourworldindata.org/data-insights
July 16, 2025 at 3:57 PM
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
My 'Data Insight' on @ourworldindata.org today is about rising yields and falling hunger.
→ ourworldindata.org/data-insights
Reposted by Max Roser
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
We wrote about it recently: ourworldindata.org/data-insights/was-the-global-decline-of-extreme-poverty-only-due-to-china
July 13, 2025 at 7:07 AM
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
We wrote about it recently: ourworldindata.org/data-insights/was-the-global-decline-of-extreme-poverty-only-due-to-china
My latest Data Insight is about extreme poverty in South East Africa.
In Madagascar, Malawi, Mozambique, and Zambia, extreme poverty is not declining.
In Madagascar, Malawi, Mozambique, and Zambia, extreme poverty is not declining.
July 12, 2025 at 5:14 PM
My latest Data Insight is about extreme poverty in South East Africa.
In Madagascar, Malawi, Mozambique, and Zambia, extreme poverty is not declining.
In Madagascar, Malawi, Mozambique, and Zambia, extreme poverty is not declining.
In 2014, half of Greece's electricity was generated by coal.
A decade later, that share has fallen to just 6%.
A decade later, that share has fallen to just 6%.
July 5, 2025 at 2:22 PM
In 2014, half of Greece's electricity was generated by coal.
A decade later, that share has fallen to just 6%.
A decade later, that share has fallen to just 6%.
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...
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...
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.
ourworldindata.org
July 1, 2025 at 2:54 PM
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...
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...
If you are interested in our work at Our World in Data, you can subscribe to our newsletters — in recent months we made them much better.
Here is what we offer and how you can subsribe: ourworldindata.org/newsletters
Here is what we offer and how you can subsribe: ourworldindata.org/newsletters
Want to stay up to date on our work? Subscribe to our two newsletters
We send two regular newsletters so our readers can stay up to date on our work: data insights and a biweekly digest.
ourworldindata.org
June 30, 2025 at 1:18 PM
If you are interested in our work at Our World in Data, you can subscribe to our newsletters — in recent months we made them much better.
Here is what we offer and how you can subsribe: ourworldindata.org/newsletters
Here is what we offer and how you can subsribe: ourworldindata.org/newsletters
My chart on the history of three infectious diseases — smallpox, polio, and measles — before and after a vaccine was available.
June 26, 2025 at 9:40 PM
My chart on the history of three infectious diseases — smallpox, polio, and measles — before and after a vaccine was available.
For the first time ever, China's CO₂ emissions are falling due to clean energy growth, rather than reduced power demand.
May 16, 2025 at 7:57 AM
For the first time ever, China's CO₂ emissions are falling due to clean energy growth, rather than reduced power demand.
A single dose cuts the chances of measles by about 95% — a second dose reduces the risk further.
How effective and safe are measles vaccines?
In her new article, my colleague @scientificdiscovery.dev summarized the findings of a Cochrane meta-analysis.
ourworldindata.org/measles-vacc...
How effective and safe are measles vaccines?
In her new article, my colleague @scientificdiscovery.dev summarized the findings of a Cochrane meta-analysis.
ourworldindata.org/measles-vacc...
May 15, 2025 at 6:56 PM
A single dose cuts the chances of measles by about 95% — a second dose reduces the risk further.
How effective and safe are measles vaccines?
In her new article, my colleague @scientificdiscovery.dev summarized the findings of a Cochrane meta-analysis.
ourworldindata.org/measles-vacc...
How effective and safe are measles vaccines?
In her new article, my colleague @scientificdiscovery.dev summarized the findings of a Cochrane meta-analysis.
ourworldindata.org/measles-vacc...
Reposted by Max Roser
I don't doubt that a lot of people are considering leaving, but perhaps someone could tell Nature how to write survey questions
March 30, 2025 at 8:47 PM
I don't doubt that a lot of people are considering leaving, but perhaps someone could tell Nature how to write survey questions
In 2004, it took the world a year to add one gigawatt of solar power — now it takes a day.
March 18, 2025 at 10:41 AM
In 2004, it took the world a year to add one gigawatt of solar power — now it takes a day.
Reposted by Max Roser
"Statistics allows us to tell everyone's story." 📊📖
💡 An insightful lecture yesterday afternoon from Prof @maxroser.bsky.social on why we need good data to make good policy.
💡 An insightful lecture yesterday afternoon from Prof @maxroser.bsky.social on why we need good data to make good policy.
February 20, 2025 at 2:38 PM
"Statistics allows us to tell everyone's story." 📊📖
💡 An insightful lecture yesterday afternoon from Prof @maxroser.bsky.social on why we need good data to make good policy.
💡 An insightful lecture yesterday afternoon from Prof @maxroser.bsky.social on why we need good data to make good policy.