Birds are inextricably linked to feathers, which allow them to fly, keep warm and put on dramatic displays. Feathers, however, predate birds—having first belonged to extinct dinosaurs. Finding out exactly when feathers evolved, and which animals...
Is NASA still Moonbound, or will the next giant leap mean skipping straight to Mars?
Speculation is mounting that the Trump administration may scale back or cancel NASA's Artemis missions following the departure of a key official...
