Dolphins sleep with one eye open. The world's oldest piece of chewing gum is over 9,000 years old. In space, astronauts cannot cry because there is no gravity, the tears can't flow. There are more plastic flamingos in the U.S. than real ones. About 3,000 years ago, most Egyptians died by the time they were 30.
More people use blue toothbrushes than red ones.
A sneeze travels out your mouth at over 100 mph. Your ribs move about 5 million times a year, every time you breathe. In the White House, there are 13,092 knives, forks, and spoons. Slugs have four noses. Recycling one glass jar saves enough energy to watch TV for three hours.