SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Family of Vladimir Ivanovich Vernadsky (1863-1945, far right), Soviet geochemist and mineralogist. He is holding his daughter, Nina, and his son, George Vernadsky (1887-1973), is at far left. Vladimir Vernadsky's major contribution was the concept of the noosphere, a stage in the evolution of the Earth beyond the geosphere and biosphere. He also carried out pioneering work in geochemistry, biogeochemistry, and radiogeology. Photographed in Poltava, Ukraine.
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