University of Tennessee collaborates in study: Dire drought ahead, may lead to massive tree death

Evidence uncovered by a University of Tennessee, Knoxville, geography professor suggests recent droughts could be the new normal -- this is especially bad news for our nation's forests 

Evidence uncovered by a University of Tennessee, Knoxville, geography professor suggests recent droughts could be the new normal. This is especially bad news for our nation's forests.

For most, to find evidence that recent years' droughts have been record-breaking, they need not look past the withering garden or lawn. For Henri Grissino-Mayer he looks at the rings of trees over the past one thousand years. He can tell you that this drought is one of the worst in the last 600 years in America's Southwest and predicts worst are still to come.