Sloths may be threatened by climate change, human sprawl after 64 million years of evolution

Sloths may be threatened by climate change, human sprawl after 64 million years of evolution
Sloths, the world's slowest mammals, have evolved over 64 million years into a species that thrives throughout Central America and northern South …

Author: By Aliza Chasan

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** MORE curations: Al Cannistra at San Antonio ONE here.