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Using data and research to understand what really makes a difference. Click to read By the Numbers, by Hannah Ritchie, a Substack publication with tens of thousands of subscribers.
Site URL: hannahritchie.substack.com
Feed URL: hannahritchie.substack.com/feed
Posts: 10
Followers: 1
Does China have a huge electricity advantage over the United States?
https://hannahritchie.substack.com/p/china-vs-us-electricity
Published: March 5, 2026 07:18
China uses most of its electricity for industry, while the US consumes it in households and commercial services.
Does that use a lot of energy? [Update]
https://hannahritchie.substack.com/p/does-that-use-a-lot-of-energy-update
Published: March 3, 2026 06:28
An interactive tool that lets you compare the energy consumption of various products and activities.
My book is published in the US today, and I'm shortlisted for the Unwin Award
https://hannahritchie.substack.com/p/clearing-the-air-published-us
Published: February 17, 2026 09:33
Three things for today.
Does that use a lot of energy?
https://hannahritchie.substack.com/p/does-that-use-a-lot-of
Published: February 16, 2026 06:31
An interactive tool to get a sense of scale for energy consumption.
Do subsidies make meat much cheaper?
https://hannahritchie.substack.com/p/meat-subsidies
Published: February 9, 2026 07:38
A little, but not much. Certainly not enough to make them cheaper than meat substitutes.
The changing (and perhaps surprising) geography of diabetes
https://hannahritchie.substack.com/p/the-changing-and-perhaps-surprising
Published: February 2, 2026 06:59
Diabetes is growing much faster in South Asia and Africa than in Europe or North America.
We could produce a lot of electricity on the land used for biofuels
https://hannahritchie.substack.com/p/biofuels-vs-solar-land
Published: January 27, 2026 05:55
About enough to meet current global electricity demand.
Are bees booming or dying off?
https://hannahritchie.substack.com/p/bee-populations
Published: January 20, 2026 07:35
Bees are more than just honeybees.
Many people are individually optimistic but think the world is falling apart
https://hannahritchie.substack.com/p/many-people-are-individually-optimistic
Published: January 13, 2026 05:12
Most people are personally optimistic, but socially pessimistic. This can be a drag on collective progress.
The low life expectancy of Americans is not just about deaths among young people
https://hannahritchie.substack.com/p/life-expectancy-americans
Published: January 7, 2026 05:49
Even those who reach 65 are at a disadvantage relative to peer countries.