Maxist theory
Karl Marx
Capitalists (bourgeois) vs. workers (proletariat)

Workers' struggle continues? labour exploitation
Capitalist exploitation of resources may lead to future extinction.

Capital uses body to commodify nature:
Interaction between body (labour) and nature (resources) leading to extraction of profits fo the Capitalist System

http://www.bu.edu/wcp/Papers/Soci/SociWarr.htm