In many countries, urine was used as a detergent for washing.
17
Seaweed can grow up to 12 inches per day!
59
Tsunamis ( tidal waves ) travel as fast as jet planes.
97
Passengers on the Beijing subway can pay with plastic bottles.
29
You share your birthday with at least 9 million other people in the world.
205
The ashes of the average cremated person weigh nine pounds.
40
Less than 3% of the water produced at a large municipal water treatment plant is used for drinking purposes!
24
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7