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Still Worried After All These Years: Paul Ehrlich on a Planet with 7 Billion People

Stanford biologist Paul Ehrlich still sees runaway population growth as a threat to the planet, but is hopeful that humans can avoid the first catastrophic collapse of a global civilization.

Stanford News Service

Stanford biologist Paul Ehrlich points to population and consumption as equally responsible for producing environmental damage.

By Sarah Jane Keller
Stanford News Service

Today’s the day that, according to a United Nations tally, world population reaches seven billion — and could top ten billion by the end of the century.

In his 1968 book, The Population Bomb, Stanford biologist Paul Ehrlich warned of the threat of unchecked human population growth. Over the past four decades, the book has brought attention to the question of how many individuals our planet can sustain. Today, Ehrlich reflects on what the four decades since have taught him. Continue reading