Living on Earth: Researchers from Holland and around the world are developing a feed additive that reduces methane emissions from cows. Jake Lucas reports that the additive prevents microbes in bovine gut from making so much of the potent global warming gas.
Transcript
LUCAS: If cows were more polite, we'd have one less pollution problem to worry about. Whenever cows let loose a little gas--particularly when they burp--they emit methane, a powerful greenhouse gas. In fact, the EPA estimates that burping cattle...