In a video of a sun-drenched yard, a cat relaxes in the branch of a tree, with a man-made birdbox above him. But rather than waiting for prey, he's getting a haircut—from a tiny bird, who is pulling ...

The Wright Brothers studied bird flight before they designed the first airplane. Now modern aircraft fly higher and faster than any bird, yet no manufactured device matches the graceful movements and ...

Winglets are used by airlines for a good reason — they save companies money by allowing airplanes to fly more efficiently, ...