Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Liquid TIDE laundry detergent glows under a blacklight.
96
The smell of freshly cut grass is actually a plant distress call.
31
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Scientists in Germany have developed a candy that doesn't cause cavities.
11
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304