There was more than one mass-market magazine article. There were no mass-market magazine cover stories, and yes there are fakes going around of those. There wer

There was more than one mass-market magazine article. There were no mass-market magazine cover stories, and yes there are fakes going around of those. There were also newspaper articles on it regularly throughout the 1970's. As well as numerous works of science fiction, and TV episodes like "in Search of...The Coming Ice Age" from 1978 narrated by Leonard Nimoy: https://www.youtube.com/watch?v=1kGB5MMIAVA https://www.youtube.com/watch?v=1kGB5MMIAVA. The science it was based on, of course, was the fact that ice ages are cyclical and we are well towards what would typically be the end of an interglacial period: "the last four interglacials lasted over ~20,000 years with the warmest portion being a relatively stable period of 10,000 to 15,000 years duration. This is consistent with what is seen in the Vostok ice core from Antarctica and several records of sea level high stands. These data suggest that an equally long duration should be inferred for the current interglacial period as well. Work in progress on Devils Hole data for the period 60,000 to 5,000 years ago indicates that current interglacial temperature conditions may have already persisted for 17,000 years." -- https://www.usgs.gov/faqs/how-long-can-we-expect-present-interglacial-period-last https://www.usgs.gov/faqs/how-long-can-we-expect-present-int... You also had the fact that some of the coldest (and snowiest) winters on record in the US were during the 1970's, most notably during 1977 when it snowed in Miami and the Bahamas for the only time in recorded history, and temperatures in much of the midwest stayed below freezing for over a month. So of course articles about a new ice age would attract readers, even though any return to ice age conditions would happen over centuries, if it wasn't disrupted by humans. It really was a lot of snow though, we were out of school for like two weeks in the spring of 1978.