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

A rat can last longer without water than a camel. See more

Soccer is the most attended or watched sport in the world. See more

The deepest hole ever made in the world (in Texas) is as deep as 20 empire state buildings but only 3 inches wide. See more

Astronauts grow taller in space. See more

Hot water weighs less than cold water for a given volume. See more

More than 20% of the votes in the 2001 elections in Argentina were invalid. See more

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

Your skin weighs about 3.2 kg. See more