Sound travels about 4 times faster in water than in air.
408
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Scientists in Germany have developed a candy that doesn't cause cavities.
11
The force of a suction cup is calculated using F=AP.
15