A random mutation in a gene can alter its function and bring about a new characteristic that can pass down for many generations, but this may not be the only way that organisms can inherit a trait.

For well over a century, Darwin’s theory of natural selection has served as biology’s grand unifying framework, explaining how species adapt and evolve through the differential replication of randomly ...

In Part One of this series, we saw that culture doesn't suffer from the problem that Darwin's theory of natural selection successfully solved: the problem of how change accumulates in biological ...