Not so. Read the Newsweek article, Time, etc. the contemporaneous press shows the coming ice age was quite the thing on the 70s.
The media isn't a good guide to what scientists actually think.
Meanwhile, back in reality, cooling never was the dominant opinion in scientific publications.
Also note that until we figured global warming out, global cooling was a reasonable prediction, since we appear to be in an interglacial that can be expected to go back toward cold at some point.
In fact, the last I read on the topic (several years ago) said we're experiencing forcing toward warmth due to greenhouse gasses and forcing toward coolth due to the interglacial cycle, and it happens that the forcing toward warmth is stronger, so we're warming up rather than cooling down.