Are we still evolving....

The question whether humans are still evolving is something that crops up now and then. If the story is British you know that the evolutionary geneticist Steve Jones will be approached for his obligatory quote. There's apparently going to be a program today in Britain about continuing human evolution. You can already watch it online if you are British. In any case, there's at least going to be some balanced treatment if this BBC story is representative. Two quick points which I think need to be emphasized: - When we talk about natural selection there's too often a focus on nature. Exogenous shocks. A lot of intra-specific competition occurs between individuals, without nature intervening. Jacob Zuma has 20 children. Barack Obama has 2. If there are some differences in inherited trait values, then there's some selection going on right there. - Steve Jones likes to point out that death rates ...