Body Heat Generates Power for Wearables

Body Heat Generates Power for Wearables

Cool new printable thermoelectric generators transform body heat into electricity. Printed on paper or cloth, these generators can power wearable devices such as sensors. Thermoelectric generators are nothing new. Until now, though, they were made of inflexible...
Blood-Powered Devices

Blood-Powered Devices

Nearly all our electricity comes from mechanical energy; a flow of liquid or gas passes a propeller or similar device, which spins magnets in a coil of wire to produce an electrical current. This is the basic technology behind hydroelectric, coal, gas, nuclear, and...
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