To avoid humans, more wildlife now work the night shift
- Written by Kaitlyn Gaynor, Ph.D. Candidate in Environmental Science, Policy and Management, University of California, Berkeley

For their first 100 million years on planet Earth, our mammal ancestors relied on the cover of darkness to escape their dinosaur predators and competitors. Only after the meteor-induced mass extinction of dinosaurs 66 million years ago could these nocturnal mammals...
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