And the Winner Is ...

By LAUREN SMITH, ELIZABETH QUILL and MATT PETRIE

Hotfooting It

The energy from one human step: enough to power a couple of 60-watt light bulbs for one second. The energy from 28,500 steps: enough to power a passenger train.

That's the principle behind the "crowd farm," designed by two graduate students at the Massachusetts Institute of Technology's School of Architecture and Planning, which would transform into electricity the energy generated by people as they walk. The students, James D. Graham and Thaddeus P. Jusczyk,