You Wouldn't Survive a Day in the Sahara in Shorts

Why do desert dwellers wrap themselves in heavy robes when it's 50°C outside? Because in extreme heat, the air is hotter than your skin, and loose clothing works like a portable air conditioner. In this video: the 1980 Negev Desert experiment, the "chimney effect" of Bedouin robes, the Tuareg "Blue Men of the Sahara", and the 50,000-year-old needle from Denisova Cave. Chapters: 00:00 The 50°C paradox 00:39 Why clothes don't trap heat here 00:55 Heat from three directions 01:11 Sweat, your only cooling system 01:49 What a loose robe really does 02:09 The 1980 Negev experiment 02:44 The chimney effect 03:17 Tuareg and the Blue Men of the Sahara 03:36 Hot days, freezing nights 03:52 Lice, needles and the origin of clothing 04:43 You use this trick too 05:12 The final twist Sources: Shkolnik, Taylor, Finch & Borut, "Why do Bedouins wear black robes in hot deserts?", Nature, 1980. Body lice studies by Mark Stoneking and colleagues, Max Planck Institute for Evolutionary Anthropology. Subscribe for more science-backed stories about how humans survived the impossible. #desert #science #humanevolution