Only humans shed emotional tears.
331
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Sudbury Valley School allows students to do whatever they want; no curriculum, tests, homework, or even classes unless requested. 82% of students get accepted to college, as opposed to the 63% national public school average.
21
Coins usually survive in circulation for about 30 years.
66
The average cough comes out of your mouth at 60 miles per hour.
126
If you took a standard slinky and stretched it out it would measure 87 feet.
52
Wearing red increases attraction.
30
A fire in Australia has been burning for more than 5,000 years!
91