By 526 million years ago, in the midst of the Cambrian Explosion, animals could now sense as much as 15 centimeters away. While this still isn't far, it was around 12 times their own body width—about ...
As all children learn, everyone poos. But when did this begin? And what evolutionary and environmental changes accompanied the dawn of dung? Going further, is the evolution of excrement the reason we ...
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