September 1, 1970
1 min read
The Biosphere
Introducing an issue on how the earth's thin film of living matter is sustained by grand-scale cycles of energy and chemical elements. All of these cycles are presently affected by the activities of man
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September 1, 1970
1 min read
The Biosphere
Introducing an issue on how the earth's thin film of living matter is sustained by grand-scale cycles of energy and chemical elements. All of these cycles are presently affected by the activities of man