Comments by "An13" (@An-kw3ec) on "PBS Eons" channel.

  1. I live in a place over 4000ft of altitude, oxygen levels are around 17%, we are perfectly fine. Bolivian people live at higher altitudes than the highest mountain in Europe, where oxygen concentration is 10% All cities in colorado are above 3000ft.
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  2. Subsaharian Africans are more ancient than European ecotypes and they are much less hairy, fur losing probably appeared on the tropics, where nocturnal temperatures never dropped below 70 F, humans were already wearing clothes when arrived at Europe and Northern Asia, so it already functioned as a termal barrier.
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  3. Southern beech, alerce and araucaria have their origins there, they are adapted to cold climates like oaks and pines, the valdivian temperate rainforests and new zealand are the remanents of that time.
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