Albert Allen Bartlett is an emeritus Professor of Physics at the University of Colorado at Boulder, USA. Professor Bartlett has lectured over 1,600 times since September, 1969 on Arithmetic, Population, and Energy.Bartlett joined the faculty of the University of Colorado in Boulder in September 1950. His B.A. degree in physics is from Colgate University and his M.A. and Ph.D. degrees in physics are from Harvard University. In 1978 he was national president of the American Association of Physics Teachers. He is a Fellow of the American Physical Society and of the American Association for the Advancement of Science. In 1969 and 1970 he served two terms as the elected Chair of the four-campus Faculty Council of the University of Colorado.Bartlett is a modern-day Malthusian.Professor Bartlett often explains how sustainable growth is an oxymoron. His view is based on the fact that a modest percentage growth can equate to huge escalations over short periods of time.He regards overpopulation as "The Greatest Challenge" facing humanity, and promotes sustainable living. Bartlett opposes the cornucopian school of thought, and refers to it as The New Flat Earth Society.