The possibility that rising levels of carbon dioxide could alter the Earth’s temperature balance has been known for more than a century, but it wasn’t until 1987 and the release of a major United Nations report on sustainable development, “Our Common Future”, that global warming was identified as one of the most serious challenges facing humanity.

This explainer on CO2 and the greenhouse effect was produced by ABC TV’s Quantum program the following year. It’s interesting to watch it again today, because even then, people had begun to suspect that something unusual was happening to the world’s climate.

See also https://earthclimate.eu/2019/07/19/the-climate-warning-from-the-early-1980s/

21views
Climate,
Greenhouse Gases
1988