BusinessEnergy from Agricultural Commodities - Bio-gas Pioneer Christoph MartensTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoBusiness09/04/2012September 4, 2012The boom in the bio-gas industry has led to Germany increasing its corn production to 810,000 hectares. But these large fields have their detractors. Food or fuel - which is more important?https://p.dw.com/p/163eaAdvertisement