Your brain is 80% water.
525
The smell of freshly cut grass is actually a plant distress call.
31
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Cold water weighs more than hot water.
93
The average home creates more pollution than does the average car.
33
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Indoor pollution is 10 times more toxic than outdoor pollution.
62
A cesium atom in an atomic clock beats over nine billion times a second.
43