The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
In many countries, urine was used as a detergent for washing.
17
Americans are responsible for generating roughly 20% percent of the garbage in the world.
29
Couples' personalities converge over time to make partners more and more similar.
235
An iceberg contains more heat than a lit match.
73
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
The face of a penny can hold about thirty drops of water.
85
Cash machines are as dirty as public toilets.
175