The "Cobra Effect" is where a solution for a problem actually makes the problem worse.
21
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
The odds of being killed by falling out of bed are one in two million.
136
It's impossible to kill yourself by holding your breath.
703
All the gold ever mined could be molded into a cube 60 feet high and 60 feet wide.
38
A portion of the water you drink has already been drunk by someone else, maybe several times over.
170
Not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
12
The face of a penny can hold about thirty drops of water.
85