The National Academy of Sciences asks “When could scientists have first known about climate change?”

National Academy of Sciences on X: “When could scientists have first known about climate change? A thought experiment by #NASmembers Ben Santer, Susan Solomon & Qiang Fu shows the fingerprints appeared early on—demonstrating the power of long-term climate monitoring. Read more in @sciam: https://t.co/ZktHdP2D7E” / X

Fifty years ago they answered the question.

“The climates of the earth have always been changing, and they will doubtless continue to do so in the future. How large these future changes will be, and where and how rapidly they will occur, we do not know.”

NATIONAL ACADEMY OF SCIENCES, 1975

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