With his CloudFisher, Peter Trautwein has developed a collector that can convert fog into drinking water in remote areas of the world - a device that not even strong winds can destroy. The industrial designer sells his collector through the WaterFoundation as well as via his own company Aqualonis. Mr. Trautwein spoke with European Business about the symbiosis between entrepreneurial and non-profit-making activity, the financing of his projects, and the various possibilities and limitations of his technology.