Spiked and studded dog-collars derive from the days of the Ancient Greeks, who would give their sheep-dogs sharply spiked collars to protect their necks from wolves whilst they watched over a Sheppard's flock at night.

In the USA, 32% of employees eat lunch and work at the same time.

Pluto is the only planet in our solar system that has not been visited by a spacecraft.

AMAZING FACTS