Gravitational Energy Power Generation

It has come to the attention of UBCo Energy Systems that gravity apparently increases markedly whenever children are in the proximity of garbage, making the aforementioned garbage far too heavy to pick up or move.

Consequently, UBCo have developed a number of devices, all of which look remarkably like garbage and which will be strewn haphazardly in those places where children gather in greatest number... around schools, cinemas and corner stores.

This nefariously cunning scheme way soon end the world's dependence upon fossil fuels; nuclear fuels and the regionally inconsistent solar and wind energy capture programs which have previously attracted many billions of dollars of investment and millions of hours of engineers' time.

So, next time you see some pimply, hirsute, disrespectful teenager step over an empty cola can on the ground, just remember that she may be saving the world, one step at a time.