The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
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
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
One cubic mile of seawater contains about 50 pounds of gold.
79
In 1850, only 8% of the people in California were women.
0
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
More than 25% of the world's forests are in Siberia.
51
The Sahara desert expands at about 1km per month.
90