The palms of your hands and the soles of your feet cannot tan. No piece of paper can be folded in half more than 7 times. The radioactive substance, Americanium - 241 is used in many smoke detectors. The parachute was invented by Leonardo da Vinci in 1515. Your stomach has to produce a new layer of mucus every two weeks otherwise it will digest itself.
Every Swiss citizen is required by law to have a bomb shelter or access to a bomb shelter.
Rennin, the enzyme obtained from the fourth stomach of a cow and used chiefly in the manufacture of cheese, is capable of coagulating more than 25,000 times its weight of fresh milk. Tomatoes and cucumbers are fruits. Penguins can jump as high as 6 feet in the air. There are more than 1,000 chemicals in a cup of coffee. Of these, only 26 have been tested, and half caused cancer in rats.