New Zealand Tries to Cap Gaseous Sheep Burps

Publication: National Geographic News   Date: May 13, 2002   View Article

New Zealand scientists trying to curb their country’s influence on global warming may have found an answer to belch about: Livestock that eat plants high in condensed tannins produce up to 16 percent less methane, a potent greenhouse gas.

Tannins are the yellow-brown chemical compounds found in many plants and give red wine its distinctive flavor.

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