By ; Alexa Sisson
He strongly believed there were too many people and too much unnecessary human consumption that constantly went to waste. He really studied about the homo sapiens. He also worked with Anne (his wife). They were awarded the Tyler prize, for Environmental Achievement for their significant scientific contributions, on population biology, ecology & evolution, and for raising public awareness of shaping public opinion on resource depletion and environmental degradation. They worked with butterflies as a testing system.
"Too Many People, Too Much Consumption." By Paul R. Ehrlich and Anne H. Ehrlich: Yale Environment 360. Web. 27 Aug. 2015.
"Stanford Researcher Declares That the Sixth Mass Extinction Is Here." Stanford University. Web. 27 Aug. 2015.
"Paul Ehrlich." Famous Scientists. Web. 31 Aug. 2015.