There was some debate in the '70s among climatologists as to whether an ice age was coming. Some thought it was, most did not. Time picked this up because it was a good story, not because it was good science. As more research was done, the true trend became apparent. This is readily available information that you should probably know already if you're going to counter a scientific consensus.
Just another case of global warming denialists twisting facts to suit their own needs. Here you go:
http://www.skepticalscience.com/ice-age-predictions-in-1970s.htm
"However, these are media articles, not scientific studies. A survey of peer reviewed scientific papers from 1965 to 1979 show that few papers predicted global cooling (7 in total). Significantly more papers (42 in total) predicted global warming (Peterson 2008). The large majority of climate research in the 1970s predicted the Earth would warm as a consequence of CO2. Rather than 1970s scientists predicting cooling, the opposite is the case."