Few people have the tenacity of ecologists Peter and Rosemary Grant, willing to spend part of each year since 1973 in a tent on a tiny, barren volcanic island in the Galapagos. Even fewer would ...

From the sharp, hooked beak of a hawk to the delicate, nectar-sipping bill of a hummingbird, every shape tells a story of adaptation and survival. The beak can also give us a bit of insight into ...

Darwin thought that evolution took place over hundreds or thousands of years and was impossible to witness in a human lifetime. Peter and Rosemary Grant have seen evolution happen over the course ...