> Even a baguette, surprisingly enough, can provide enough electricity to light up an LED. This make no sense. Did they rediscover the Galvanic battery? In tha

> Even a baguette, surprisingly enough, can provide enough electricity to light up an LED. This make no sense. Did they rediscover the Galvanic battery? In that case, the energy comes from the wires made of different materials, not from the baguette. Does someone have a more technical explanation because the press article is horrible.