The can opener was invented 48 years after cans were introduced. See more

Due to gravitational effects, you weigh slightly less when the moon is directly overhead. See more

An adult human heart weighs about 10 ounces and beats over 100,000 times a day See more

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

There are 206 bones in your skeleton. See more

Astronauts grow taller in space. See more

Venus is the only planet in the solar system to spin backwards. See more

The cigarette lighter was invented before the match. See more

Human thigh bones are stronger than concrete. See more

After billions of years, black holes become white holes and they spit out all the things they sucked up. See more

Lightning strikes about 6,000 times per minute on this planet. See more

It takes about 20 seconds for a red blood cell to circle the whole body. See more

Like fingerprints, everyone's tongue print is different. See more

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

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

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