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The best tech inventions that have enabled humans to evolve

In this series, we look at everything, large and small, that has changed the way we do things or has significantly enhanced our lives. In part 14, we look at inventions that have furthered human advancement throughout time.
By Eileen Brown, Contributor
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5 of 14 Shotput

Zero

Zero, nothing, nought, or the telephone number 'oh' was represented by the word meaning 'empty' in Arabic. It originated in China around the fourth century BC. It is a paradox.

The ancient Greeks asked 'How can nothing be something?' when arguing about its existence. It would be nice to see several zeroes after numbers on checks sent to your account.

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13 of 14 Public Domain Pictures

Calendar

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14 of 14 Memory Catcher

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