Posted : 8 years ago

A US ton is equivalent to 900 kg (2000 pounds). A British ton is 1008 kg (2240 pounds), called a gross ton.

Hydrogen gas is the least dense substance in the world.

The double-helix structure of DNA was discovered in 1953 by James Watson and Francis Crick. The length of a single human DNA molecule, when extended, is 1.7 metres (5 ft 5 in).

A square piece of dry paper cannot be folded in half more than 7 times.

Since space is essentially empty it cannot carry sound. Therefor there is no sound in space, at least not the sort of sound that we are used to.

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Posted : 9 years ago

If the amount of water in your body is reduced by just 1%, you’ll feel thirsty.

The muscle that lets your eye blink is the fastest muscle in your body. It allows you to blink 5 times a second. On average, you blink 15 000 times a day. Women blink twice as much as men.

The length from your wrist to your elbow is the same as the length of your foot.

On average a hiccup lasts 5 minutes.

If all your DNA is stretched out, it would reach to the moon 6,000 times.