The Last Days of Mankind: Ecological Survival Or Extinction

acres actually Agriculture already American animals asked Authority bear become began bill birds building California called cars claim companies Congress conservation conservationists considered contain continued cost created Creek damage Department effect Engineers environment estimated fact Federal feet fish flood Florida forest ground growing highway houses increased industry insects interest Interior killed Lake land least leaves living major March means Michigan miles million Mineral mountain National Park natural original percent plant pollution population problem produced proposed reached redwood result river road says Secretary Service showed Sierra Club Society species stream supply timber tion trees United wild wilderness wildlife wood York