The future of human evolution in space will be driven by challenges both similar — and different — to those that have guided our development for countless generations. Since our species, Homo sapiens, first evolved in Africa roughly 315,000 years ago, we haven’t changed much when it comes to physical characteristics. Globally, our species seen a decrease in the overall body size and brain size, together with reductions in the proportions of our jaws and teeth. Regional populations also show differing physical characteristics, due to climate and lifestyle. “We are now generally shorter, lighter and smaller boned than our ancestors…
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