Hmmm….
clipped from www.nytimes.com

BRADENTON, Fla. — How much does your morning glass of orange juice contribute to global warming?
PepsiCo, which owns the Tropicana brand, decided to try to answer that question.
PepsiCo hired experts to do the math, measuring the emissions from such energy-intensive tasks as running a factory and transporting heavy juice cartons. But it turned out that the biggest single source of emissions was simply growing oranges
PepsiCo finally came up with a number: the equivalent of 3.75 pounds of carbon dioxide are emitted to the atmosphere for each half-gallon carton of orange juice.

Now, PepsiCo managers said they planned to work with their growers and with researchers at the University of Florida to find ways to grow oranges using less carbon. And they are starting to grapple with ways to teach the public how to interpret the carbon footprint of a product.

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