Nylon is made from coal and petroleum.
42
Indoor pollution is 10 times more toxic than outdoor pollution.
62
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Pure water (H2O) does not conduct electricity on its own.
46
One third of the electricity produced on earth is used to power electric light bulbs!
75
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Aluminum used to be more valuable than gold!
84