One cubic mile of seawater contains about 50 pounds of gold.
79
Every year, Alaska has about 5,000 earthquakes.
31
The Caspian Sea is also classed as the world's largest lake.
52
There are approximately three chickens for every human on Earth.
13
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The Atlantic Ocean is saltier than the Pacific Ocean.
54