"A person would have had to eat three apples in 1991 to supply the same iron content as one in 1940." --Brian Halweil, senior researcher at The Worldwatch Institute and author of "Still No Free Lunch: Nutrient levels in U.S. food supply eroded by pursuit of high yields."

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Cities around the world are facing the danger of rising seas and other disasters related to climate change. Of the 33 cities predicted to have at least 8 million people by 2015, at least 21 are highly vulnerable, says the Worldwatch Institute.

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The Worldwatch Institute presented its annual State of the World report today. And they warn that with 50 percent of the world's population now living in urban areas, there is the danger of collapse in the new mega-cities.

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Setting aside the environmental impact (or lack thereof) that biofuels have, the main purpose of increasing production would be the gain in independence from foreign oil, which could be a large factor in foreign policy down the road, if not already.

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