Human thigh bones are stronger than concrete. See more

One quarter of the bones in your body, are in your feet. See more

You're born with 300 bones, but when you get to be an adult, you only have 206. See more

Astronauts grow taller in space. See more

The human heart creates enough pressure when it pumps, to squirt out blood 30 feet high. See more

In a year, your heart can beat up to 40,000,000 times!. See more

The right lung is slightly larger than the left. See more

You will have to walk 80 kilometers for your legs to equal the amount of exercise your eyes get daily. See more

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

Lightning bolts can sometimes be hotter than the sun (about 50,000 ºF, 27,760 ºC). See more

Most marine fish can survive in a tank filled with human blood. See more

The 'save' icon on Microsoft Word shows a floppy disk, with the shutter on backwards. See more

As much as 80% of microwaves from mobile phones are absorbed by your head! See more

The magnetic North Pole shifts by about 7 meters a day. See more

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

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