1711-1776 1859-1952 animalrights animals business conservationist contributionsinpoliticalsciencearistotle contributionsinpoliticalsciencedewey contributionsinpoliticalsciencehume crime criminology david ecofeminism economics ecoterrorism environmentaldegradation environmentalism environmentalist environmentalmanagement environmentalpolicy environmentalpsychology environmentandecology evolution(biology) gaiahypothesis ge195 general greenmovement greenorganizations humanecology john naturalism philosophy philosophyofnature politicalaspects politicalscience realestate religiousaspects sabotage socialaspects socialecology society sociology sustainabledevelopment terrorism unitedstates