It's usually pretty easy to live in harmony with squirrels - unless you come between them and their nuts. Then all bets are off. A very determined man wanted to feed the birds in his backyard ... but ...

Navigating a cluttered environment at high speed is among the greatest challenges in biology. Yet it's one virtually all birds achieve with ease. It's a feat that David Williams is working to ...

Mark Rober is a former NASA scientist who has now decided to apply his skills to more earthly problems, like the fact that squirrels keep trying to eat all the bird seed out of the feeders in his ...