You can alleviate a tickly throat by scratching your ear.
9
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
There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
34
The lifespan of mammals is about 1 and a half billion heartbeats.
127
The United Nations declared the Internet a basic human right in 2011.
181
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4