The 25 inventions selected as finalists in the History Channel Modern Marvels Invent Now Challenge range from the head-slappingly simple to the mind-bogglingly complex.Steve Wozniak awarded the grand prize.
The 25 inventions selected as finalists in the History Channel Modern Marvels Invent Now Challenge range from the head-slappingly simple to the mind-bogglingly complex.Steve Wozniak awarded the grand prize.