Conversation

85 years ago.

In April 1938, Guy Callendar published his seminal paper showing that Earth’s land areas had warmed over the previous 50 years.

He also suggested that man-made CO₂ emissions had caused around half of the observed warming.

85 years ago.

https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/qj.49706427503