1991 Event 2 year experimental Biosphere 2 in Oracle Arizona begins 1961 Birthday Mark Van Thillo, Wilrijk Belgium, co-captain, Biosphere 2 1959 Birthday Abigail Kingsley Alling, New York City, executive, Biosphere 2 1955 Birthday Sally E. Silverstone, born in Walthamstow, England, Co-Captain, Biosphere 2 1953 Birthday Margaret L. Augustine, born in Buffalo, New York, project manager, Biosphere 2 1947 Birthday Mark Nelson, born in Brooklyn, New York, crew member, Biosphere 2 1940 Birthday William Fred Dempster, born in Berkeley, California, crew member, Biosphere 2 1929 Birthday John Polk Allen, Carnegie, Oklahoma, CEO, Biosphere 2
