A documentary about Terra Preta, Mars and Poo. Terra Preta is the most fertile soil on this earth and for a long time it was well hidden, a hermetic secret held by the tribes of the tropical rainforests of the Amazon which transforms meagre tropical soil with permanently fertile earth.
This ancient process could enable the colonization of Mars and the transformation of Earth’s own deserts. Just one question remains: Is there such a thing as useless shit?

Running time / 01:22:45
Directed by / Dennis Rätzel