Original sentence: Green economists often take more radical positions than those found in the more convential environmental economics with respect to economic growth and optimality.It is sometimes referred to as "Green Economics" and is in sharp contrast to other schools of thought within economics
Edited sentence: It is sometimes referred to as "Green Economics" and thematically is a major challenge to the present global capitalist economic paradigm in its radical restatement of the views of green economists or the more conventional environmental economics to more directly challenge the classical ideas of growth or optimality