Cow pee is an environmental problem. But now scientists say calves can be potty-trained.
There are 1.4 billion cows on Earth, and treating their urine could help lower greenhouse gas...
Read MoreThere are 1.4 billion cows on Earth, and treating their urine could help lower greenhouse gas...
Read Morehttp://feeds.washingtonpost.com/rss/national/energy-environment...
Read MoreThe Pew survey also found that the two largest greenhouse gas emitters, the United States and...
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Read MoreThe Global Methane Pledge aims to cut emissions of the potent greenhouse gas by at least 30...
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