
Paul Ralph Ehrlich
Biologist, environmentalist, author
- Lifespan
- May 29, 1932 – March 13, 2026May 29, 1932 – Mar 13, 2026
- Location
- Palo Alto, California, U.S.Palo Alto, CA, U.S.

Biologist, environmentalist, author
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Key moments and achievements from Paul Ehrlich's life.
Paul was born
· Palo Alto, California, U.S.
Scientific Discovery
Ehrlich's early research focused on the evolutionary biology of butterflies, leading to groundbreaking work on coevolution. His influential 1964 paper co-authored with botanist Peter H. Raven helped popularize the concept of coevolution, fundamentally changing how biologists understand species interactions.
Scientific Discovery
Ehrlich's early research focused on the evolutionary biology of butterflies, leading to groundbreaking work on coevolution. His influential 1964 paper co-authored with botanist Peter H. Raven helped popularize the concept of coevolution, fundamentally changing how biologists understand species interactions.
Published Work
In 1968, Ehrlich co-authored 'The Population Bomb' with his wife Anne, predicting that unchecked population growth would lead to mass famine. The controversial bestseller became one of the most influential environmental books of the 20th century, selling millions of copies and sparking a global debate about resource sustainability.
Published Work
In 1968, Ehrlich co-authored 'The Population Bomb' with his wife Anne, predicting that unchecked population growth would lead to mass famine. The controversial bestseller became one of the most influential environmental books of the 20th century, selling millions of copies and sparking a global debate about resource sustainability.
Academic Honor
Ehrlich was named the Bing Professor of Population Studies in the Department of Biology at Stanford University, one of the university's most prestigious endowed chairs. The appointment recognized his decades of influential research and public advocacy on population and environmental issues.
Academic Honor
Ehrlich was named the Bing Professor of Population Studies in the Department of Biology at Stanford University, one of the university's most prestigious endowed chairs. The appointment recognized his decades of influential research and public advocacy on population and environmental issues.
Institution Founded
In 1984, Ehrlich founded the Center for Conservation Biology at Stanford University, creating an institutional home for research on biodiversity loss and environmental conservation. The center became a leading hub for conservation science and policy research.
Institution Founded
In 1984, Ehrlich founded the Center for Conservation Biology at Stanford University, creating an institutional home for research on biodiversity loss and environmental conservation. The center became a leading hub for conservation science and policy research.
Paul Ehrlich made his first appearance on 'The Tonight Show Starring Johnny Carson' in February 1970, shortly after the publication of his 1968 book 'The Population Bomb,' and the audience response — reportedly generating some 5,000 viewer letters — led Carson to invite him back just two months later in April. Ehrlich was subsequently invited back every year through 1989, accumulating more than 20 appearances that brought his warnings about overpopulation and environmental collapse to tens of millions of mainstream American television viewers. One interview ran a full hour, an extraordinary length for a talk-show format. These high-profile appearances transformed the Stanford biologist into one of the most recognizable scientists in the United States and cemented his role as a leading public voice on environmental issues during the height of the American ecological movement.
Paul Ehrlich made his first appearance on 'The Tonight Show Starring Johnny Carson' in February 1970, shortly after the publication of his 1968 book 'The Population Bomb,' and the audience response — reportedly generating some 5,000 viewer letters — led Carson to invite him back just two months later in April. Ehrlich was subsequently invited back every year through 1989, accumulating more than 20 appearances that brought his warnings about overpopulation and environmental collapse to tens of millions of mainstream American television viewers. One interview ran a full hour, an extraordinary length for a talk-show format. These high-profile appearances transformed the Stanford biologist into one of the most recognizable scientists in the United States and cemented his role as a leading public voice on environmental issues during the height of the American ecological movement.
Paul Ehrlich passed away