If you read a book painting the very worst-case scenarios about what global warming means for human life you could easily panic. Here’s why you shouldn’t

Earth 25 February 2019
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Ashley Cooper pics / Alamy

Imagine two groups of people setting off for a hike in the extreme heat of Death Valley.

One group is well prepared with plenty of water, sunscreen, maps, fully-charged phones and so on; the other treats it like a stroll in the park.

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Which group is going to fare better?

Humanity as a whole is about to be forced to go hiking in Death Valley. How we fare will depend not just on how hot it gets, but on how well we …

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