Lions can reach speeds of up to 81 kph (50 mph) but only in short bursts because of a lack of stamina.

Used for water distribution, the Delaware Aqueduct in New York, USA is the longest tunnel in the world (as of 2010). Drilled through solid rock, it reaches a staggering 137 kilometres (85 miles) in length. More tunnel facts.

The Olympics were originally held for the Greek god Zeus.

AMAZING FACTS