SciShow
Why Do We Have Baby Teeth?
What's up with baby teeth? Do other animals have them, and what are they good for -- other than squeezing money out of the tooth fairy? We have the answers!
TED Talks
Juliet Brophy: How a new species of ancestors is changing our theory of human evolution
In 2013, a treasure trove of unusual fossils were uncovered in a cave in South Africa, and researchers soon realized: these were the remains of a new species of ancient humans. Paleoanthropologist Juliet Brophy takes us inside the...