Dr. SeussJuice ::something of a different flavor::

we have the best of our brightest working on ways to turn ourselves into a renewable energy source.... in 2005 DARPA established the Energy Starved Electronics program to accomplish what was only thinkable in The Matrix.  from PSFK:

Anantha Chandrakasan, an electrical engineering professor at MIT, and his former student Yogesh Ramadass are exploring how to channel thermal and kinetic energies produced by the human body into electricity. The team discovered that by applying mechanical pressure to “piezoelectric materials,” they could produce an electric current, which could then be stored in solid-state capacitors on a chip a few square millimeters small and discharged when needed. “Thermoelectric materials” also produce electricity when exposed to two different temperatures (i.e. body heat and the cooler air around it), and could also be placed on the chip.