These new species of biofluorescent fish are beautifully strange

Biofluorescence is what happens when an animal absorbs light, then throws it back out in a different color. It's one of the weirdest and most beautiful traits in the animal kingdom, but now we know it is not among the rarest. Scientists have just identified 180 new biofluorescent fish — and they look pretty amazing. » 1/09/14 11:19am 1/09/14 11:19am

This experiment changed our understanding of parasite resistance

It's common scientific wisdom that parasite resistance comes from repeated exposure to a parasite. But a new study has turned this idea on its head. Guppies who were removed from rivers swarming with parasites actually evolved an improved parasite tolerance in just a few generations. Here's how it happened. » 11/06/13 1:00pm 11/06/13 1:00pm