These articles explore evolution - the changes seen in the inherited traits of a population from one generation to the next. Evolution is one of the great mysteries of biology, since it is a slow process and difficult to study.
How do humans evolve?
The day our human ancestors figured out fire must have been a pretty exciting one. Through the years, we've changed in so many ways, from growing bigger brains to burying our dead. But how did we get from there to here?