Elon Musk works twice as many hours a week as the average American.
A scientist from Illinois has found a 115-million-year-old fossilized mushroom - the oldest known in the world.
Japanese scientists have discovered that eating in front of a mirror makes meals taste better.
The first known shark attack in British waters has left its surfer victim with a cut on his thumb.
Monkeys, sheep, crows and honeybees can remember human faces.
Ravens bear grudges.