The Atlantic Ocean is saltier than the Pacific Ocean.
54
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The average ice berg weighs 20,000,000 tons!
54
One cubic mile of seawater contains about 50 pounds of gold.
79
More than 25% of the world's forests are in Siberia.
51
The state with the longest coastline in the Continental U.S. is Michigan.
31