what is the noosphere
From Wikipedia, the free encyclopedia. The noosphere (/ËnoÊ.ÉsfÉªÉr/; sometimes noÃ¶sphere) is the sphere of human thought. The word derives from the Greek Î½Î¿á¿¦Ï (nous mind) and ÏÏÎ±á¿ÏÎ± (sphaira sphere), in lexical analogy to atmosphere and biosphere. It was introduced by Pierre Teilhard de Chardin in 1922 in his Cosmogenesis.