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Vladimir Vernadsky was a brilliant and prescient scholar-a true scientific visionary who saw the deep connections between life on Earth and the rest of the planet and understood the profound implications for life as a cosmic phenomenon. -DAVID H. GRINSPOON, AUTHOR OF VENUS REVEALED
The Biosphere should be required reading for all entry level students in earth and planetary sciences. -ERIC D. SCHNEIDER, AUTHOR OF INTO THE COOL: THE NEW THERMODYNAMICS OF CREATIVE DESTRUCTION