Yawns are more contagious among people with closer relationships.
163
Moths are unable to fly during an earthquake.
328
In 2012, as phone booths become increasingly obsolete because of mobile phones, a Japanese artist has turned several booths in Osaka into aquariums.
7
Sound doesn't travel in space.
255
Nachos were actually invented by a guy named Nacho. Happy Nacho Day!
13
Sharks have been on the planet longer than trees.
14
You will experience the billionth second of your life when you are 31 years old.
21
The United States does not have an official language.
88