But, let’s take a look at what Nikola Tesla — a man who died broke and alone — has actually given to the world. For better or worse, with credit or without, he changed the face of the planet in ways that perhaps no man ever has.

1. Alternating Current – This is where it all began, and what ultimately caused such a stir at the 1893 World’s Expo in Chicago.
2. Light – Of course he didn’t invent light itself, but he did invent how light can be harnessed and distributed.
3. X-rays – ...
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