Cows are a contributor to green house gases?

Cows produce methane in large quantities, making them a large factor in our emissions.  The U.S. raises many cows, and they add up to a lot of green house gases.  There is also a new food for cows that could reduce this effect.

"Methane is a significant green house gas that can lead to global warming. It is also commonly produced by many animals including humans and cattle. Cow belches, a major source of greenhouse gases, could be decreased by an unusual feed supplement developed by a Penn State dairy scientist."

Cows are definitley a problem for our green house emissions.  In America we have enormous amounts of cows too.  If we want to be proactive we should start fixing this.  That doesn't mean all cows should die, or we should change our ways entirely.  We should probably eat less beef in the long run which would reduce our emissions by a little.  But, according to Alexander Hristov, a new feed for the cows could reduce their methane levels by 40 percent, which would be a significant step in reductions on the national scale.  We need to find other energy sources, but right now, under this category of green house emissions, it seems to be a good idea.  Scientists understand this problem, and they can already take steps to solve it.  The food also can increase milk production, which would allow us to use even less cows.  It's a win, win, win.  We reduce green house gases, reduce our bulk of cows, and it will end up being beneficial for our agricultural economy because we won't need to sustain more cows.