The climate of this planet is too cold for humans everywhere except the tropics, where humans evolved. They could only occupy colder areas due to fire, shelter, and clothing. A naked human in the shade dies of hypothermia at 20C. Earth average temp is 14.5C. You don't know this? pic.twitter.com/rL6Eky03Rl
— Patrick Moore (@EcoSenseNow) May 28, 2020