Pando, a single quaking aspen in Utah, covers 106 acres, weighs about 6,000 tons, and has been cloning itself from one seed for an estimated 14,000 years — possibly far longer. On a ridge above Fish Lake in south-central Utah, Pando looks like a forest until you learn where the organism really is. The grove covers 106 acres. It contains roughly 47,000 genetically identical quaking aspen stems. Together, the stems and roots ... [7394 chars]