Television correspondent Gary Strieker provides this on-the-ground video report on research showing that in respiring, old-growth forests capture a good deal more carbon from the atmosphere than was previously known. And in a world increasingly preoccupied with slowing global warming, that's worth money -- these forests are gaining market value beyond the price of their timber.

Made for the Assignment Earth series on Yahoo News, the report is a companion piece to Sharon Levy's The Giving Trees, the cover story of OnEarth's Spring 2008 issue.