ANTHONY HOWARTH / SCIENCE PHOTO LIBRARY ANTHONY HOWARTH / SCIENCE PHOTO LIBRARY
Professor James Lovelock (born 1919) the freelance inventor and independent scientist, and author of "The Gaia Hypothesis" in which the biosphere is considered as a self-regulating system like an organism. He is pictured here at his home in Cornwall, with the electron capture detector he invented for separating and measuring minute quantities of gases.
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