Bing Professor of Population Studies, Professor of Biological Sciences at Stanford University and is Chairman of the Board of Directors of the Center for Conservation Biology at Stanford University.
Fellow of the American Association for the Advancement of Science, the American Academy of Arts and Sciences, the American Philosophical Society, and a member of the National Academy of Sciences.
Pr Ehrlich is the 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. His research group covers several areas. It studies the dynamics and genetics of natural populations of checkerspot butterflies (Euphydrayas) with techniques ranging from computer-processed mark-release-recapture experiments, modeling of population processes, to starch-gel electrophoresis.
His research group is also carrying out several studies of avian communities and field evaluations of populations of various endangered organisms. The group's policy research on the population-resource- environment crisis takes a broad overview of the world situation, but also works intensively in such areas as immediate legislative interests as endangered species and the preservation of genetic resources.
John Muir Award of the Sierra Club
Gold Medal Award of the World Wildlife Fund International,
MacArthur Prize Fellowship,
Crafoord Prize of the Royal Swedish Academy of Sciences,
Volvo Environmental Prize,
Heinz Award for the Environment,
United Nations' Sasakawa Environmental Prize,
1998 Tyler Prize for Environmental Achievement.