Sound travels about 4 times faster in water than in air.
408
Each king in a deck of playing cards represents a great king from history: spades - King David, clubs - Alexander the Great, hearts - Charlemagne, and diamonds - Julius Caesar.
33
A Native American tribe in South Dakota collects bottle caps left by campers, using them as currency. Several banks in the area now recognize the caps as legal tender.
225
NASA invented baby food as we know it today.
7
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Drinking watermelon juice before a workout helps reduce muscle soreness.
21
If NYC were its own country, and the NYPD was its army, it would be the twentieth-best-funded army in the world, just behind Greece and just ahead of North Korea.
14