1950s, in the media and arts
1958
Film, drama/comedy, starring Cary Grant and Ingrid Bergman
Screenplay by Norman Krasna.
Perhaps the article he refers to (below) is the one from the New York Times (see next link, below).
Here is the link to the film on youtube:
https://www.youtube.com/watch?v=h26o52Oqbz0>
Start watching at the scene which begins at approx. the 24:00 mark.
The (awkward) conversation is the lead-in to what the two actors say in the elevator.
Dialogue, at approx. 25:30 :
Ingrid Bergman:
It's unusual for the weather to be so muggy this time of year.
Cary Grant:
Yes, uh... I read an article the other day that claimed the world's weather was changing.
Bergman:
Oh, really? That's interesting.
Grant:
Yes, isn't it.
1956
New York Times article, Oct. 28
Headline:
Warmer Climate on the Earth May Be Due
To More Carbon Dioxide in the Air
"Today more carbon dioxide is being generated by man's technological processes than by volcanoes, geysers and hot springs."
You can view the article in its entirety here: https://static01.nyt.com/packages/pdf/weekinreview/warm1956.pdf