Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Most dust particles in your house come from dead skin.
48
Pure water (H2O) does not conduct electricity on its own.
46
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Research indicates that plants grow healthier when they are stroked.
173
Liquid TIDE laundry detergent glows under a blacklight.
96