The Body Electric, Bionic Power Reveals

In The Matrix, human bodies are plugged into an elaborate grid where their energy is harvested to power our robot overlords. That nightmare scenario has its downsides, but practically speaking, human bodies do produce a lot of energy that goes untapped. Researchers are coming up with ways to convert that energy into electricity—power that could be used to charge your cell phone, transmit a wireless signal, or power a medical implant.