What would be different If we walked on four these days?
In: Biology
Heat.
In the savannah we needed to dissipate heat. Most animals do not do this because they don’t sweat. But us having our torso above the grass where a breeze could pull heat away allowed us to go long distance.
This is one no one else mentioned. Big brain, seeing over the grass, efficient long distance travel, and maximum exposure to breezes for evaporative cooling. We are well designed for sure.
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