Cricket chirping can tell the temperature outside. Counting how many times a cricket chirps in 15 seconds and then adding 40 to that number will approximately tell you what the temperature is in Fahrenheit.

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.

It is unknown if odd perfect numbers exist.

AMAZING FACTS