There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The smell of freshly cut grass is actually a plant distress call.
31
Out of all the senses, smell is most closely linked to memory.
146
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Hot water can freeze faster than cold water.
181
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Pumice is the only rock that floats on water.
14