The peppered moth is an iconic example of Charles Darwin’s theory of evolution by natural selection. For centuries peppered moths (Biston betularia) were common in the forests around Manchester, ...

Two novel hypotheses have been proposed that address the “two-fold cost of sex”: one of the biggest enigmas in the evolution of sexual reproduction. The evolution of sexual reproduction in living ...

The first babies conceived in space were cockroaches. When they were born on Earth, scientists said the offspring were bigger, grew faster, ran faster, and took on a dark-red color. Credit: Ian Moore ...