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
When glass breaks, the cracks move faster than 3,000 miles per hour. To photograph the event, a camera must shoot at a millionth of a second!
114
When glass breaks, the cracks move faster than 3,000 miles per hour.
47
If you took a standard slinky and stretched it out it would measure 87 feet.
52
By raising your legs slowly and laying on your back, you can't sink in quicksand.
105