MIT is basically the Xavier Institute for Higher Learning except without the superpowers and twice the acne. They've got a crazy new idea about utilizing the physical vibrations generated by a crowd of people and turning it into power.
"A single human step can only power two 60W light bulbs for one flickering second. But get a crowd in motion, multiply that single step by 28,527 steps, for example, and the result is enough energy to power a moving train for one second."
This could be placed in malls, trains stations, airports, and other areas with a lot of foot traffic and very quickly generate meaningful amounts of power.