The National Geographic Magazine, Volume 149, Issue 3National Geographic Society., 1976 - Geography |
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Page 289
... energy : from wood to coal , and from coal to oil and gas . Dr. Robert C. Seamans , Jr. , Administra- tor of the Energy Research and Development Administration ( ERDA ) , points out that each tran- sition took about 60 years . Now ...
... energy : from wood to coal , and from coal to oil and gas . Dr. Robert C. Seamans , Jr. , Administra- tor of the Energy Research and Development Administration ( ERDA ) , points out that each tran- sition took about 60 years . Now ...
Page 381
Solar Energy , the Ultimate Powerhouse By JOHN L. WILHELM Photographs by EMORY KRISTOF NATIONAL GEOGRAPHIC ... Energy Corporation near Boston . Dr. Mlavsky urgently believes that people must become aware of the sun's enormous potential ...
Solar Energy , the Ultimate Powerhouse By JOHN L. WILHELM Photographs by EMORY KRISTOF NATIONAL GEOGRAPHIC ... Energy Corporation near Boston . Dr. Mlavsky urgently believes that people must become aware of the sun's enormous potential ...
Page 385
... energy used by man in recorded history . If such consumption continues , obviously alter- native sources must be found . And the major- ity of experts with whom I have talked agree that mankind must look to the sun to help solve our energy ...
... energy used by man in recorded history . If such consumption continues , obviously alter- native sources must be found . And the major- ity of experts with whom I have talked agree that mankind must look to the sun to help solve our energy ...
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