Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
Billions of neutrinos pass unnoticed through your body every second.
6
For every gallon of sea water, you get more than a quarter pound of salt.
45
Liquid TIDE laundry detergent glows under a blacklight.
96