cell phone chargers

The second law of thermodynamics is the enemy here.

When a high-end Swiss watchmaker introduces what appears to be a plain old dumb phone, odds are there’s something more...

First the British invented waterproof Wellington boots; now they’ve invented a way to derive power from those boots. Could corduroy-friction-power...

One cell phone charger to juice them all

Want to impress all of your tree-hugging friends who are chiding you that your iPhone can kill you? Now a...