A chance of a woman having twins is increased after the age of 35. About 1 in 27 women will give birth to twins after this age. After 50 the chances of having twins is 1 in 9.

Hydrogen solid is the most dense substance in the world, at 70.6g/cc.

Two very popular and common objects have the same function, but one has thousands of moving parts, while the other has absolutely no moving parts - an hourglass and a sundial.

AMAZING FACTS