More than 50% of the people in the world have never made or received a telephone call. See more

Americans own roughly 42 percent of all the world’s privately held firearms while making up less than 5% of the world’s population. See more

The Netherlands has built 800 miles of massive dikes and sea walls to hold back the sea. See more

Thomas Edison designed a helicopter that would work with gunpowder. It ended up blowing up and also blew up his factory. See more

It took approximately 2.5 million blocks to build the Pyramid of Giza, which is one of the Great Pyramids. See more

In 10 minutes, a hurricane releases more energy than all of the world's nuclear weapons combined. See more

In 2006, there were 398 million mobile (or cell) phones in China. See more

There are 100 million internet users in China. Some of the sites they can't access are BBC news, Amnesty International and Dalailama.com. See more

The US has nearly six times the gun homicide rate of Canada. Per capita. See more