Bio-fuel to increase food and feed prices

The ever-increasing cost of oil is prompting the use of alternative energy sources. Besides the focus on wind and solar energy, interest in bio-fuel is also on the increase. The ever-increasing cost of oil is prompting the use of alternative energy sources. Besides the focus on wind and solar energy, interest in bio-fuel is also on the increase.   Lester Brown, director of the US-based Earth Policy Institute, foresees problems for the human food chain if more and more grains, soybe