The Hoover Dam, built along the Colorado River between 1931 and 1936 reaches 726 feet in height (221 metres). More interesting dam facts.

In 10 minutes, a hurricane releases more energy than all the world'snuclear weapons combined.

The first commercial microwave oven was called the "1161 Radarange" and was the size of a refrigerator.

A M A Z I N G   F A C T S