The 'Electronification' of Everything

An electric toothbrush requires roughly 35 metals. What if the supply chain broke down?


Photographer: Sean Gallup/Getty Images

Only about 150 years ago, almost all materials in a person’s home came from a nearby forest or quarry. By the 1960s, with more developed supply lines and more consumer appliances, the average American home contained about 20 different elements.

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