Plant gas

Trees, grasses, and other plants may produce the greenhouse gas methane.

By Emily Sohn, 00:00 AM January 11, 2006

You may have never heard of methane, but there's a lot of it out there. Cows emit the gas, which is produced by bacteria in their stomachs. Methane also wafts up from the wet soils in swamps and rice paddies, where methane-producing microbes live.

 

Now, an international team of scientists has found another, unexpected natural source of methane: plants. Previously, researchers had thought that it was impossible for plants to make significant amounts of the gas. They had assumed that microbes ne...

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