Search Results | timeline of united states inventions before 1890

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10 Inventions by Thomas Edison (That You've Never Heard Of)

science.howstuffworks.com/10-inventions-thomas-edison.htm

It's common knowledge that Thomas Edison invented the incandescent light bulb and the phonograph, but did you know he also developed concrete furniture and a phone to communicate with the dead?

How Ketchup Works

recipes.howstuffworks.com/ketchup.htm

As people begin to prefer spicier sauces, what's the future of ketchup? Find out from HowStuffWorks.

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