(born 1930) One of the great popularizers of environmental concerns during the 1960s and 1970s.

His book, The Population Bomb (1968), co-authored by his wife, Anne, brought Malthusian concerns over population growth and the inevitability of resource scarcity into the political realm. This book also became the most widely read and discussed environmental book of the era, surpassing even Rachel Carson’s Silent Spring (1962) in sales. Although many of Ehrlich’s dire predictions have not come true, they were responsible for bringing to light the notion that there may be genuine ecological limits to human growth.