Yawns are more contagious among people with closer relationships.
163
By peeing in the shower, you can save 1,157 gallons of water a year.
31
Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
22
The top sales at Walmart as a storm approaches are Pop-Tarts and beer.
12
Only about 2% of the world population has green eyes.
36
Mars had an oxygen-rich atmosphere around 4 billion years ago
13