Pig farmers to the global rescue

Here's a novel green thought: Pig farmers can fight global warming by using feed enzymes.

It's true and proven, according to enzyme producer Novozymes. The company said the pork industry can reduce about 4 million tons of carbon dioxide, plus save 2.5% on feed when using enzymes in pig feed.

"2.5% does not sound like a lot, but when you consider that each year pig farmers use more that 650 million tons of feed, 2.5% really amounts to something significant."

By giving feed enzymes to the pigs, their manure also contains less of the greenhouse gas methane and fewer nitrites.