If the earth gets sick, so will you

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A hotter world will probably be a sicker world.

The increasing fever on earth has obvious consequences for human health, such as heat waves that are hotter than our physiology can tolerate. However, humanity's departure from the stable climate it inherited will also bring surprises. Some of these may be existing diseases appearing in new places or spreading with greater ferocity. And some, experts fear, could be entirely new diseases.