Geologist, Professor Ian Plimer: The planet has cooled 4°C since medieval times

"If you started measuring in the 1850s, there's been a general warming of about 0.7 degrees Celsius... If you started to measure from the medieval times, we've had a cooling of about four degrees Celsius...


-- Wide Awake Media (@wideawake_media), --September 5, 2023

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