During my many enjoyable years teaching vertebrate zoology at ETSU, I would always end my lecture on the evolution of the vertebrates by saying we had now entered a unique stage in the history of life on Earth – The Age of Man.  I would then go on and point out that we have long been used to referring to various Ages of -- (Fishes, Amphibians, Reptiles, etc.) but there has never before been a time that only ONE species was the dominant biological force on…