George Wald
![George Wald in 1987](https://upload.wikimedia.org/wikipedia/commons/8/81/George_Wald_1987.jpg)
In 1970, Wald predicted that “civilization will end within 15 or 30 years unless immediate action is taken against problems facing mankind.” Provided by Wikipedia
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4Published 1941Contributors: “..., Shirley S.; Steven, David; Vaughn, Catherine; Wald, George; Winslow, Jacqueline...”
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