Noosphere

The Noosphere ( /ˈnoʊ.ɵsfɪər/; sometimes noösphere), according to the thought of Vladimir Vernadsky and Teilhard de Chardin, denotes the "sphere of human thought". The word is derived from the Greek νοῦς (nous "mind") and σφαῖρα (sphaira "sphere"), in lexical analogy to "atmosphere" and "biosphere". It was introduced by Pierre Teilhard de Chardin 1922 in his Cosmogenesis. Another possibility is the first use of the term by Édouard Le Roy, who together with Teilhard was listening to lectures of Vladimir Vernadsky at Sorbonne. In 1936 Vernadsky accepted the idea of the Noosphere in a letter to Boris Leonidovich Lichkov (though, he states that the concept derives from Le Roy).