The crawler, the machine that takes the Space Shuttle to the launching pad moves at 3km/h (2 mph).

Luke Howard used Latin words to categorize clouds in 1803.

Earth is slowing down – in a few million years there won’t be a leap year.

A storm officially becomes a hurricane when cyclone winds reach 119 km/h (74 mph).

Earth is not round; it is slightly pear-shaped. The North Pole radius is 44mm longer than the South Pole radius.