And the international affairs think-tank Chatham House report says: "Recent falls in food prices are a temporary reprieve.
"They are set to resume their upward trend once the world emerges from the economic downturn."
The report blames "climate
change, water scarcity and competition for land". Also: "A return to
high oil prices will increase food prices as more crops are converted
to biofuels."
Oxfam warns of a "triple crunch of economic
crisis, climate change and energy and water scarcity" leading to a
billion people possibly facing starvation.
Chief executive
Barbara Stocking said: "World leaders must act urgently to co-ordinate
action that addresses immediate needs and begins to implement long-term
reforms."