10% of human dry weight comes from bacteria. See more

About 70 percent of your body weight is water. See more

The heart beats about 100,000 times each day. See more

The electric chair was invented by a dentist. See more

Zero point energy is a source of energy which is released when atoms stop moving, at -273 Celcius. See more

Astronaut Neil Armstrong first stepped on the moon with his left foot. See more

Your muscles make up about one-half of your body weight. See more

A cat's urine glows under a black light. See more

The telescope on Mount Palomar, California, can see a distance of 7,038,835,200,000,000 million miles. See more

Astronauts are not allowed to eat beans before they go into space because passing wind in a spacesuit damages them. See more

It is impossible for a solar eclipse to last for more than 7 minutes 58 seconds. See more

December 1972, astronaut Eugene Cernan (U.S.) became the last person to set foot on the moon. See more

The microwave was invented after a researcher walked by a radar tube and a chocolate bar melted in his pocket. See more

If you have a car remote and you step out of its range, point it to your head and it will work again! See more

It takes a plastic container 50,000 years to start decomposing. See more

The typical laboratory mouse runs 2.5 miles per night on its treadmill. See more