More than 35 species of falcons roam the Earth’s skies at present. But there used to be at least three others. Here’s the story of the confirmed falcon species lost to the world forever.

Two new studies add to the evidence that human activity, from fishing to urban development, is driving the evolution of wild ...

The discovery of Enigmacursor mollyborthwickae, a dog-size "runner" dinosaur, has left researchers re-evaluating Nanosaurus ...

In a first-of-its-kind study, Stanford researchers have measured how the abundance of ocean life has changed over the past ...