When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The smell of freshly cut grass is actually a plant distress call.
31
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
The average home creates more pollution than does the average car.
33
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
The force of a suction cup is calculated using F=AP.
15
No matter how cold it gets, gasoline will not freeze.
107
Indoor pollution is 10 times more toxic than outdoor pollution.
62