The term "noosphere" refers to a philosophical concept and a layer of thought or consciousness that emerges from the collective intellectual activity of humanity. It is derived from the Greek word "noos," meaning "mind," and "sphaira," meaning "sphere." The concept was popularized in the early 20th century by the French philosopher and Jesuit priest Pierre Teilhard de Chardin and the Russian geochemist Vladimir Ivanovich Vernadsky.
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