Chuck Greene, Bruce Monger, Mark Huntley, Geoengineering: The Inescapable Truth of Getting to 350, The Solutions Journal, Volume 1, Issue 5, September 2010, Pages 57-66 ( Abstract: During the past 2.5 million years, Earth’s climate has demonstrated remarkable volatility, shifting in and out of glacial and interglacial conditions in synchrony with cycles in the Earth’s orbital configuration relative to the sun. This same 2.5 million-year period coincides with the time frame for the evolution of modern humans from their proto-human ancestors. While it may be tempting to suggest that evolution should have prepared humans to adapt readily to large changes in climate, it is important to recognize that human civilization did not evolve until relatively recently, during the stable interglacial conditions of the Holocene epoch, which began about 10-12 thousand years ago. The favorable climatic conditions of the Holocene accelerated the pace of human ingenuity. With the advent of agriculture and animal husbandry about eight thousand years ago, humans began to alter the landscape on an unprecedented scale. However, it was not until the industrial era started … Topics: Climate Change; Energy; Sustainability; Technology