The National Academy of Sciences has announced the completion of its “Planet Earth” film series. Produced under a grant from the Ford Foundation, the collection includes thirteen 27‐minute, 16‐mm educational films covering topics in geophysical research which were stressed in connection with the International Geophysical Year. Although inspired by the IGY, the series reviews the development of man's knowledge of the earth since ancient times. Hugh Odishaw of the NAS acted as director of the series, and it was produced by Lothar Wolff of Louis de Rochemont Associates, Inc. The series was issued by the Academy in cooperation with the WGBH Educational Foundation of Cambridge, Mass.

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