Genius Engineering Inventions

Tin cans were first produced in London in 1813. But they had to be opened with a hammer and chisel, because the can opener wasn''t invented until 1855! Check out other amazing engineering innovations, such as a popular soft drink originally sold as a "brain tonic," an 18th-century battery called a voltaic pile, and a design from 1596 for the first flushing toilet. Fact-packed text and fun illustra...