The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The smell of freshly cut grass is actually a plant distress call.
31
Liquid TIDE laundry detergent glows under a blacklight.
96
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Scientists aren't sure what color dinosaurs were.
312
The sun is 330,330 times larger than the earth.
75