You burn 26 calories in a one minute kiss.
605
Only humans shed emotional tears.
331
No matter its size or thickness, no piece of paper can be folded in half more than 8 times.
-64
It takes 492 seconds for sunlight to reach the Earth!
44
There are more than 10 million bricks in the Empire State Building!
75
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Passengers on the Beijing subway can pay with plastic bottles.
29
Ice isn't slippery. What makes people and things slip on ice is water. A thin layer of ice melts when pressure is applied to it and it is this wet layer on top of the ice that is slippery.
153