Two MIT graduate students have found a way to harness the power of steppin'. They've developed technology that generates electricity when you walk over a special sub-floor that shifts slightly as you depress each square. This magic device then converts the movement into energy. While a small step from one person won't do much, if you install this in a train station or concert areana, you're suddenly generating enough electricity to make it worth while.
While I love any renewable energy resource, the idea of directly effecting the energy output is exciting. It could become a game. Maybe they put a huge sign in Yankee Stadium that shows how many joules have been created this month. They could then compete with Mets fans at Shea. In some ways, this reminds me of the Hong Kong gym that generates electricity from treadmills. The more you exercise the more you help the community.
Not nearly enough useful technology incorporates fun. It's depressing hearing about how global warming is going to kill us all, so give us a fun way to help out. Sure, I'll still do the boring things like unplugging gadget chargers, but isn't it more pleasing to think my spastic game of tag in Grand Central is actually helping the environment?