Processing wood into paper requires a lot of water, energy, and chemicals. Creapaper mixes in grass, reducing the need for trees—and all the resources necessary to process them. As the backlash ...

A thin-film printed battery, designed for one-time use after activation by a few drops of water, has minimal environmental impact when it is exhausted. The need for single-use, low-capacity batteries.

It sounds impossible: Just add water to a piece of paper and get energy. Researchers at Empa, a Swiss research institute, devised a proof of concept for a water-activated disposable battery powered by ...

First ed. published by Butterworth-Heinemann. 2011. "DVD contains videos and animations, most of which exclusively produced for this book, and a selection of key illustrations from the book to support ...