12.007 Geobiology, Spring 2003
Author(s)Sachs, Julian P. (Julian Perelman); Summons, Roger E.
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The interactive Earth system: biology in geologic, environmental and climate change throughout Earth history. Since life began it has continually shaped and re-shaped the atmosphere, hydrosphere, cryosphere and the solid earth. Subject introduces the concept of "life as a geological agent" and examines the interaction between biology and the earth system during the roughly 4 billion years since life first appeared. Topics include the origin of the solar system and the early Earth atmosphere; the origin and evolution of life and its influence on climate up through and including the modern age and the problem of global warming; the global carbon cycle; and astrobiology.
atmosphere, hydrosphere, cryosphere, solar system, global carbon cycle, evolution, global warming, Interactive earth system, biology, geologic change, environmental change, climate change, Earth history, life, solid earth, geological agent, astrobiology, biogeomorphology, long-term climate cycles, mass extinctions, biogeochemical tracers, origin of life, antiquity, habitable zone, deep biosphere, geological time, Geobiology