In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
There are approximately three chickens for every human on Earth.
13
The Earth sees about 760 thunderstorms every hour, scientists have calculated.
185
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119