Archives for evolution

05.20.19

Evolution and the Mammalian Spine

Journal Article
"Nearly all mammals have the same number of cervical vertebrae, no matter how long or short their necks are--humans, giraffes, mice, whales, and platypuses all have exactly seven cervical vertebrae," said Jeff Spear, a doctoral student from New York University, and part of a team whose Leakey Foundation supported research explored why this characteristic has stayed the same through time and across species.
02.20.18

Why Is Human Color Vision so Odd?

Guest Post
Most mammals rely on scent rather than sight. Look at a dog’s eyes, for example: they’re usually on the sides of its face, not close together and forward-facing like ours. Having eyes on the side is good for creating a broad field of vision, but bad for depth perception and accurately judging distances in front.