Japanese engineers were asked to redesign the front end of the Bullet Train because it carried enough speed to create a sonic boom whenever it exited a tunnel. Residents could feel the blast from miles away.
11
Cows can sleep standing up, but they can only dream lying down.
745
The reindeer is the only mammal that can see UV light.
17
The human brain is more active during sleep than during the day.
28
People who sleep late have more mental stamina and can outperform early risers.
33
Teddy bears were named after U.S. President Theodore 'Teddy' Roosevelt.
23