The UN is giving mixed reviews to biofuels that produce energy from agricultural products. They may be counter-productive for the environment. America's corn farmers are reaping a financial harvest from ethanol. Is it really cleaner and cheaper? What is it doing to the price of food? Also, from the Persian Gulf, Vice President Dick Cheney issues a warning to Iran and, on Reporter's Notebook, an Islamic crackdown on public displays and Tehran's mad, mad world of high fashion.
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