Christopher Joyce http://kut.org en An Arbor Embolism? Why Trees Die In Drought http://kut.org/post/arbor-embolism-why-trees-die-drought Scientists who study forests say they've discovered something disturbing about the way prolonged drought affects trees.<p>It has to do with the way trees drink. They don't do it the way we do — they suck water up from the ground all the way to their leaves, through a bundle of channels in a part of the trunk called the xylem. The bundles are like blood vessels.<p>When drought dries out the soil, a tree has to suck harder. Fri, 23 Nov 2012 10:37:07 +0000 Christopher Joyce 5713 at http://kut.org An Arbor Embolism? Why Trees Die In Drought