In 1968, Paul Ehrlich released his ground-breaking book The Population Bomb, which awoke the national consciousness to the collision-course world population growth is on with our planet's finite resources. His work was reinforced several years later by the Limits To Growth report issued by the Club of Rome.

Fast-forward almost 50 years later, and Ehrlich's book reads more like a 'how to' manual. Nearly all the predictions it made are coming to pass, if they haven't already.

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