Heat to electricity - US Department of Energy researchers want to convert body heat into gadget-juice
...heat, and just a wee bit a visible light. Energy that goes into cooling our refrigerator is wasted as heat. Electrical energy in our computers generate a lot of heat (its the reason that laptop is keeping your giblets nice and toasty). Even our bodies are wasting heat-energy all the time. Wouldnt it be great it we could capture some of that...
