Harry Stevens: It was the hottest spring on record. I decided to see how many people live in a city where the heat index broke 103°F — the threshold considered dangerous for humans. The answer? Over 1.5 billion people, nearly a fifth of the planet’s population. www.washingtonpost.com/climate-envi... 1/5

It was the hottest spring on record. I decided to see how many people live in a city where the heat index broke 103°F — the threshold considered dangerous for humans. The answer? Over 1.5 billion people, nearly a fifth of the planet’s population. www.washingtonpost.com/climate-envi... 1/5

Analysis | More than 1.5 billion people have faced dangerous heat this yearwww.washingtonpost.com A Washington Post analysis of a trove of meteorological records shows the extent of life-threatening heat across the globe.

I made a tool that lets you look up a city to see how many days the heat index was in the danger zone. If you're not a subscriber, you can use this gift link for a couple weeks to explore the data yourself: wapo.st/3x50Jts 2/5

Analysis | More than 1.5 billion people have faced dangerous heat this yearwapo.st A Washington Post analysis of a trove of meteorological records shows the extent of life-threatening heat across the globe.

As I've written before, cold kills more people than heat. Less dangerous cold is good. www.washingtonpost.com/climate-envi... But in hotter, poorer countries — where people can least afford AC, where water is scarcer and the power grid shakier — summer heat will grow more dangerous. 3/5

Will global warming make temperature less deadly?www.washingtonpost.com Both extreme heat and cold are deadly, but more people globally die from cold. Does a warming planet actually save lives? It depends on where you live.

As always, I've made my code and data available for your perusal on Observable, although the article has much nicer versions. - Map notebook: observablehq.com/@climatelab/... - History of dangerous days: observablehq.com/@climatelab/... - Lookup tool: observablehq.com/@climatelab/... 4/5

Map of dangerous heat days in 2024observablehq.com This notebook contains the data and code to produce the wide-screen version of the map seen in “More than 1.5 billion people have faced dangerous heat this year”, published in The Washington Post on J...

If you like graphics exploring climate change data, you can subscribe to get Climate Lab in your inbox twice a month: www.washingtonpost.com/newsletters/... 5/5

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excellent work, thanks