In examining the mating rituals of roundworms, researchers uncovered a unique approach to reproduction that maximizes genetic fitness. Sparks fly when a female nematode meets her mate in a Petri dish.

Researchers report three instances of a female Darwin wasp mating simultaneously with two males on a spruce woodpile in the ...

A provocative study by evolutionary biologists takes on one of Charles Darwin’s central ideas: that males adapt and compete for the attention of females because it is the females who ultimately choose ...