Have you ever thought about why we humans have noses that stick out? Turns out, there's been a big story about human evolution right... under your nose.

When pterosaurs first took flight, you could say that it marked the beginning of the end for the winged reptiles. Because, strangely enough, the power of flight -- and the changes that it led to -- may have ultimately led to their downfall.

Snakes have two penises (aka hemipenes) that come in a diverse array of shapes and sizes. And they could owe it all to their lack of legs.

Natural selection can lead to some pretty amazing adaptations, but sometimes the resulting traits aren’t the most efficient solutions to the problems at hand. With the bar set to “good enough,” here are some features that arose from...

In this episode of the SciShow talk show, Michael and Hank discuss human posture and evolution and Hank shares some personal information, and then Jessi from Animal Wonders shares Leonard, the legless lizard.

They walked on two legs, laid their eggs in nests, and some even glided through the air – find out more about the theropod dinosaurs, from which all birds evolved. Biology - Animal Kingdom - Learning Points. A Twig Curriculum Film....

Find out how the human skeleton evolved to allow us to walk on two legs.
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