A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
One cubic mile of seawater contains about 50 pounds of gold.
79
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
