It's still possible to see the division between East and West Germany due to different light bulbs.
5
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
Even Antarctica has an area code. It's 672.
58
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
Every year, Alaska has about 5,000 earthquakes.
31
The Sahara desert expands at about 1km per month.
90
More than 25% of the world's forests are in Siberia.
51