Forty-five years ago, on this day, June 22nd, 1980, the Venice G7 meeting happened. Check out this quote by Thomas Schelling.
My first serious acquaintance with the “Carbon Dioxide Problem,” as it was then called, was in 1978. The Chancellor of Germany [Helmut Schmidt] had put the issue on the agenda of a “Summit” to be held in Venice, and the White House asked the National Academy of Sciences for advice. (I believe the Chancellor’s motivation may have been that his nuclear energy programs were being attacked by greens, and he wanted to publicize the perils of coal.) I, utterly innocent of the subject, was made chairman of a committee of twelve, and had to educate myself in a hurry. It is pertinent to report here that among the very few people I found who had a broad background in the subject were Jesse Ausubel and Bill Clark, both IlASA alumni, and of course Roger Revelle, well known to IIASA. I never, at the time, discovered any other research organization that had done integrated work on the subject. Individuals worked on aspects of the subject, at numerous locations; only at IlASA did the topic appear to have organized itself
Schelling T. 1995 Research by Accident. IIASA Working Paper
The amount of carbon dioxide in the air was roughly 338ppm. As of 2025 it is 430ppm, but check here for daily measures.
The context was that the G7 meetings had begun in 1975 with a one-off that was so enjoyed it became an annual thing. In 1979, in Tokyo, they’d even name-checked carbon dioxide build-up.
What I think we can learn from this is that we knew enough in the late 1970s for action to begin. That it did not is down primarily to Thatcher, and then to Reagan.
What happened next is that in 1985 the G7 again mentioned “climatic change” in passing, but it would be 1988 before the issue broke through, thanks to the long, hot summer and then James Hansen sticking his head above the parapet and saying that it was time to stop waffling…
What do you think? Does this pass the ‘so what?’ threshold? Have I got facts wrong? Interpretation wrong? Please do comment on this post, unless you are a denialist, obvs.
Also on this day:
June 22, 1976 – Times reports “World’s temperature likely to rise” – All Our Yesterdays
