As reported in The New York Times (Aug. 1969) Stanford University biologist Paul Ehrlich warned: “The trouble with almost all environmental problems is that by the time we have enough evidence to convince people, you’re dead. We must realize that unless we’re extremely lucky, everybody will disappear in a cloud of blue steam in 20 years.”
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In 2000, David Viner, a senior research scientist at University of East Anglia’s climate research unit, predicted that in a few years winter snowfall would become “a very rare and exciting event. Children just aren’t going to know what snow is.”
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Ecologist Kenneth Watt’s 1970 prediction was, “If present trends continue, the world will be about four degrees colder for the global mean temperature in 1990, but eleven degrees colder in the year 2000.” He added, “This is about twice what it would take to put us into an ice age.”
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Harrison Brown, a scientist at the National Academy of Sciences, published a chart in Scientific American that looked at metal reserves and estimated that humanity would run out of copper shortly after 2000. Lead, zinc, tin, gold, and silver would be gone before 1990.
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in 1974, the U.S. Geological Survey said that the U.S. had only a 10-year supply of natural gas.
