Heard of the Tiger Toilet powered by worms? You soon will, thanks to @gatesfoundation. Any takers? https://t.co/aV4AV0CIGt via @businessinsider

Heard of the Tiger Toilet powered by worms? You soon will, thanks to @gatesfoundation. Any takers? https://t.co/aV4AV0CIGt via @businessinsider