Five ways we can harness the original renewable energy source – human power
Wednesday, December 2, 2015 - 08:57
in Physics & Chemistry
Human power used to be all the rage. 150 years ago, products that relied on human energy such as the bicycle, pedal-powered lathe or sewing machine could be found in most households. But as electro-mechanical motors developed, reliance on human-powered products gradually diminished.