We also saw signs of the inevitable cyborg uprising as researchers unveiled energy generating gadgets that may one day be implanted within our bodies. MIT is working on a range of heat harvesting electronics that could power biomedical devices such as heart rate and blood sugar monitors. Meanwhile, the University of Michigan has developed an energy recycling prosthetic foot that makes walking easier for amputees. Even the planet is getting wired, as HP gets set to roll out its Central Nervous System for the Earth -- an array of billions of sensors that are paving the way for smarter cities, healthier humans, and the "Internet of Things".
Finally we took a look at two more entries from the Greener Gadgets Design Competition that will be taking the stage next Thursday for live judging: an energy generating glider lounge for public spaces and bass-kicking subwoofer made from recycled car tires.