If we were to ask, a geologist would say that we are living in the Quaternary period of the Cenozoic era. This period started at the trail of the Pliocene epoch. The Pliocene epoch gave way to the Pleistocene epoch. It is the Holocene epoch, we are currently living. Some scientists are suggesting an Anthropocene epoch beginning at the 19th Century AD to mark the period in which the human activity began to make significant impact on the climate and eco-system.