After evolving from horses some two million years ago, zebras earned their stripes. But why? A team of scientists has found part of the answer.
Thanks to the new discovery of a skull from about 55,000 years ago, perspectives on early Homo sapiens migration have changed.
What do you say to a mother who just lost her child? To a neighbor who just lost her friend? Varbah Dolley often faces these scenarios fighting Ebola.
Ebola is a rare and deadly disease caused by a virus. Find out more about it and how it can be avoided here.
No doubt your family tree gets fuzzy the further back you go.