An elephant's trunk can grow to be about 2 metres long and can weigh up to 140 kg. Some scientists believe that an elephant's trunk is made up of 100,000 muscles, but no bones.

Manicuring the nails has been done by people for more than 4,000 years.

Plutonium - first weighed on August 20th, 1942, by University of Chicago scientists Glenn Seaborg and his colleagues - was the first man-made element.

AMAZING FACTS