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

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

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

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

If you are locked in a completely sealed room, you will die of carbon dioxide poisoning before you will die of oxygen deprivation. See more

More than 50% of the people in the world have never made or received a telephone call. See more

It takes 8 minutes for sunlight to travel from the sun to the earth. See more

A cat's urine glows under a black light. 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