Cairns, John Jr.2014-01-232014-01-232008http://hdl.handle.net/10919/25082Humans, thanks to their modern technology and cheap, abundant fossil energy, are changing the climate and as a result are playing a major role in the extinction of and reduction of the population sizes of many species. Extinction can occur suddenly, slowly, or it can be a result of long-term incremental changes in the habitat that are characteristic of long-term cycles on Earth. Humankind is delusional in believing that its technology will save it from extinction, just as I was delusional when I believed that humankind would be willing to change its lifestyle to achieve sustainable use of the planet.en-USIn Copyrightclimate changeSustainabilityextinctionRobert HookeArticlehttp://www.johncairns.net/Commentaries/Roberthooke2.pdf