Roots of the Human Prospect (2022, paper), Millennium Alliance for Humanity and the Biosphere See also Paul R. Ehrlich Ecosystem valuation References External links Stanford bio/c.v. Center for Conservation Biology - Stanford University - Biography (2006) Center for Conservation Biology, Stanford University website The Millennium Alliance for Humanity and the Biosphere (MAHB) website 1933 births Living people American biologists American women biologists American ecologists Women ecologists American environmentalists American women environmentalists Sierra Club directors American non-fiction environmental writers Ehrlich, Anne Howland Activists from the San Francisco Bay Area 20th-century American non-fiction writers 21st-century American non-fiction writers 20th-century American women writers 21st-century American women writers Women science writers People in public health American women non-fiction writers