The deepest part of the ocean is 35,813 feet (10,916 meters) deep and occurs in the Mariana Trench in the Pacific Ocean. At that depth the pressure is 18,000 pounds (9172 kilograms) per square inch.
More Geography Facts
The largest meteorite crater in the world is in Winslow, Arizona. It is 4,150 feet across and 150 feet deep.
Due to earth's gravity it is impossible for mountains to be higher than 49 000 feet (15,000 metres).
The World Trade Center towers used to have two zip codes, 10047-10048, one for each building.