Joseph Duff is one of the leaders of Operation Migration, a nonprofit organization that is using aircraft to restore migrating populations of whooping cranes.

Apr 11th, 2008 | 0 comments

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In the 1930s, a young Austrian scientist named Konrad Zacharias Lorenz formally documented the process of "imprinting" -- socially bonding to a parent figure.

Apr 11th, 2008 | 0 comments

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