One cubic foot of gold weighs more than 1,200 pounds!
78
Balsa wood is classified as a hard wood!
41
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The smell of freshly cut grass is actually a plant distress call.
31
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13