Around 1970, Harvard biologist George Wald estimated that “civilization will end within 15 or 30 years unless immediate action is taken against problems facing mankind.”
In 1970, Peter Gunter, a North Texas State University professor, wrote, “Demographers agree almost unanimously…by the year 2000…the entire world, with the exception of Western Europe, North America, and Australia, will be in famine.”
Paul Ehrlich claimed in the 1970 Earth Day issue of The Progressive, that between 1980 and 1989, some 4 billion people, including 65 million Americans, would perish in the “Great Die-Off.”
In 1969, Paul Ehrlich predicted “By…[1975] food shortages will have escalated... into famines of unbelievable proportions. Other experts, more optimistic, think the ultimate food-population collision will not occur until the decade of the 1980s.”