Electricity from sweaty fingertips?
This device takes power from your sweat while you sleep.
The device on a user's fingers while they sleep, harvesting energy. Credit: Jong-Min Moon A team of US researchers...
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Why bad smells stick around
Minimising odour depends on the stage you choose to target.
Ever wondered why something smells the way it does – good or bad – and why some odours just hang around no matter wha...