During a campaign appearance in Marietta, Ohio, Sarah Palin criticized comments made earlier this year by Barack Obama -- which surfaced today in an audio tape posted on YouTube.

In it the Democratic presidential candidate discusses the effects of his proposed emissions policy on the coal industry.

He said that sure, if the industry wants to build new coal-fired plants, then they can go ahead and try, he says, but they can do it only in a way that will bankrupt the coal industry, and