If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
Australia's Great Barrier Reef is 1,250 miles long!
45
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
In 1850, only 8% of the people in California were women.
0