Poo used to power homes in Africa
4 December 2015 Last updated at 07:00 GMT
In Ghana in Africa human waste is being turned into charcoal to help power homes.
There isn't a proper sewage system in the capital city Accra.
A power company has come up with a way of turning poo into charcoal which can then be used in homes.
People are using it to cook and keep homes warm.
Watch Leah's report.