Iron weighs more after it rusts.
68
Your brain is 80% water.
525
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The smell of freshly cut grass is actually a plant distress call.
31