I thought the linked story was pretty interesting, only because I swear that I thought this up when I was 7.

Basically, the idea is to use the kinetic energy that people normally displace, along with gravity and a magneto, to generate a tiny amount of electricity with each step. Imagine a floor that allowed this wherever you stepped... now imagine that same floor in a busy area, like a bus terminal, a mall, downtown streets, etc.

This, along with some of this would make for some nice, ambient, non-polluting energy production.


-link

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