Farms & Global Warming For some time, scientists have generally agreed that carbon dioxide from tailpipes and smokestacks is the principal gas responsible for global warming. Now, some scientists are suggesting that more attention should be paid to other gases that contribute to climate change. A new study in Science magazine finds that farming practices that are supposedly environmentally friendly actually contribute greenhouse gases to the atmosphere. NPR's Richard Harris reports.

Farms & Global Warming

Farms & Global Warming

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For some time, scientists have generally agreed that carbon dioxide from tailpipes and smokestacks is the principal gas responsible for global warming. Now, some scientists are suggesting that more attention should be paid to other gases that contribute to climate change. A new study in Science magazine finds that farming practices that are supposedly environmentally friendly actually contribute greenhouse gases to the atmosphere. NPR's Richard Harris reports.