One cubic foot of gold weighs more than 1,200 pounds!
78
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The average home creates more pollution than does the average car.
33
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
One ragweed plant can release as many as one billion grains of pollen!
51
Aluminum used to be more valuable than gold!
84