http://www.futurepundit.com/archives/002138.html Mice genetically engineered to have a defective mechanism for repairing only the DNA found in mitochondria age more rapidly and have less... en-us http://www.fightaging.org/archives/000129.php I was going to post some thoughts on the recently reported hard proof for mitochondrial theories of aging, but Randall Parker has already done an excellent job of that at FuturePundit. I quote a fair amount below, but you should read the whole thing: M...