In memory of Dr. Ruth Reck, who passed away yesterday, I'm sharing this article detailing her early (1960s) work as a pioneering climate scientist at General Motors Research Labs--including early warnings (then summarily dismissed) on CO2 & global warming.
The tragic part isn't that they didn't listen and believe her, but that they likely did... and felt that was a consequence too far in the future for any of them to be personally affected by it.
In 1856, Eunice Foote discovered that increased carbon dioxide warms the atmosphere. Due to her gender, she was barred from reading the paper presenting her findings at the 1856 AAAS meeting.