He's been described as the elder statesman of the environment movement, but Paul Ehrlich just wants the world to be more aware the dangers posed by modern chemicals.

Professor Ehrlich, who's in Australia on a brief visit, is a big name in the history of 20th century ecology. His book, The Population Bomb, published over forty years ago, still resonates today. Professor Ehrlich says modern man has released about 100-thousand chemicals into the environment, that are toxic in some way.

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