More than 25% of the world's forests are in Siberia.
51
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
One cubic mile of seawater contains about 50 pounds of gold.
79
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
There are approximately three chickens for every human on Earth.
13