The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
14
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
The strangers in your dreams are actually people that you've seen in real life.
50
The largest breed of rabbit is the Flemish Giant.
65
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Cows can sleep standing up, but they can only dream lying down.
745