The smell of freshly cut grass is actually a plant distress call.
31
Iron weighs more after it rusts.
16
One ragweed plant can release as many as one billion grains of pollen!
51
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
One cubic foot of gold weighs more than 1,200 pounds!
78
The earth is approx. 6,588,000,000,000,000,000 tons.
175
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101