Edouard Le Roy coins the term "noosphere" 1927

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Le Roy, a French mathematician and philosopher, worked with the Russian scientist V.I. Vernadsky and Teilhard de Chardin, both of whom attended Vernadsky's lectures on biogeochemistry at the Sorbonne in 1922-1923, to come up with the term "noosphere", the "thinking stratum" of the earth, after the geosphere and biosphere.