Time is also not a peer reviewed journal. Further, a youtube video claiming "consensus" is as valuable as quoting a Newsweek article. There was no "consensus," especially since climate change science was in its infancy. From the Damon and Kunen paper, 1976:
"Because of the differential effects of the two major sources of atmospheric pollution, the CO2 greenhouse effect warming trend should first become evident in the Southern Hemisphere."
I know that scientific studies are dismissed in favor of "popular press" but this meta-study has some numbers.
Study debunks 'global cooling' concern of '70s - USATODAY.com
"But Thomas Peterson of the National Climatic Data Center surveyed dozens of peer-reviewed scientific articles from 1965 to 1979 and found that only seven supported global cooling, while 44 predicted warming."
7! to 44! What consensus about global cooling?
PS. Emiliani did say there might be another ice age..."within a few thousand years."
In fact, he also said in the 70s that there could be “a runaway deglaciation” due to greenhouse warming.
PPS. Hansen's "An Alternative Scenario" is about a huge effort to reduce greenhouse gases. From the abstract,
"The grim "business-as-usual" climate change is avoided in an alternative scenario in which growth of greenhouse gas emissions is slowed in the first quarter of this century, primarily via concerted improvements in energy efficiency"