1.  Scientists interested in biological diversity, and the evolutionary reasons for it, already see it in that light.

2.  Is there an evolutionary reason?

3.  Q. Is there an evolutionary reason for morning sickness?

4.  The expected downside is likely for evolutionary reasons to occur in the young.

5.  There is a powerful evolutionary reason behind the way humans store fat.

6.  For sound evolutionary reasons, according to research published today.