Reuters: The United Nations’ world food body outlined steps on Monday meant to help the world’s poorest nations combat soaring food prices, including a new voucher programme for farmers and a review of food-guzzling biofuels. The Rome-based U.N. Food and Agriculture Organisation’s food price index jumped almost 40 percent this year from 2006 and hit its highest level since being launched in 1990. Hardest hit are those poor nations most dependent on food imports. FAO chief Jacques Diouf …