Guppy love under the microscope
Experts are studying the "torrid and tangled" sex life of one of the UK's most popular pet fish as they try to learn how the battle of the sexes influences evolution. Researchers at St Andrews University hope that the guppy's mating behaviour can help them unravel the mystery of how new species are formed.
I'm fascinated by studies like these. For many years now, I have had a hunch that Darwin's other great idea—Sexual Selection—might be more influential in speciation than it is generally given credit for.