Paul Ehrlich. Paul R. Ehrlich received his Ph.D. from the University of Kansas. Co-founder with Peter H. Raven of the field of coevolution, he has pursued long-term studies of the structure, dynamics, and genetics of natural butterfly populations. He has also been a pioneer in alerting the public to the problems of overpopulation, and in raising issues of population, resources, and the environment as matters of public policy. Causes.com: Build Awareness, Fundraise, and Advocate for Change. Votizen - A place to campaign for the candidates and causes you believe in.
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