Spiegel: An internal report put together by the World Bank and leaked to the Guardian claims that biofuels may be responsible for up to 75 percent of recent rises in food prices. Even environmental groups haven’t gone that far in their estimates. With soaring food prices high on the agenda for next week’s G-8 Summit in Japan, World Bank President Robert Zoellick has been clear that action needs to be taken. “What we are witnessing is not a natural disaster — a silent tsunami or a perfect …