<P>Biofuels have been represented by some as a silver bullet to the climate change threat, and by others as a fatal mistake set to destroy forests and increase hunger; they are neither. Sane and sensibly developed they offer a chance to reduce emissions, generate employment and diversify rural livelihoods. But widespread commercialisation without proper sustainability standards could prove a disaster, causing more environmental and human harm than good. This new WBGU report shows that a sustainable use of bioenergy is possible and outlines how opportunities can be exploited while at the same time minimizing risks.</P><P>This large and detailed report examines the issues surrounding bioenergy from a global perspective and demonstrates how the sustainable use of bioenergy can help minimize risks to food security, nature conservation and climate change.</P>.