Back in the 1970s, the hysteria was about global cooling and the prospect of a new ice age. A National Academy of Sciences report back then led Science magazine to conclude in its March 1, 1975, issue that a long 'ice age is a real possibility.'According to the April 28, 1975, issue of Newsweek , 'the earth's climate seems to be cooling down.' A note of urgency was part of the global cooling hysteria then as much as it is part of today's global warming hysteria. According to the February, 1973, issue of Science Digest, 'Once the freeze starts, it will be too late'.
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