Cows can sleep standing up, but they can only dream lying down.
745
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
34
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140