Kissing an infection-free partner is good for your teeth!
141
The lifespan of mammals is about 1 and a half billion heartbeats.
127
People with light eye colors (like blue, green or grey) have a higher alcohol tolerance.
194
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
The United Nations declared the Internet a basic human right in 2011.
181
The United States has paved enough roads to circle the Earth over 150 times.
72
Hot water can freeze faster than cold water.
182
The Gmail logo was designed the night before it was launched.
68