There's electricity in the air all around us, formed as water vapor comes into contact with dust particles. For centuries scientists have dreamed of tapping into this source of power - and we finally might be able to do it.
It's been coined "hygroelectricity", which means "humidity electricity", and scientists are already in the early stages of developing devices to harness it. What is "it" exactly? "It" is electrically charged water droplets hanging in the atmosphere.