The best selling game in history for coin-operated machines is Pac-Man.

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.

A car that shifts manually gets 2 miles more per gallon of gas than a car with automatic shift.

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