Johann Hari: "Every single year since 1917 has been hotter than 1917. Every single year since 1956 has been hotter than 1956. Every single year since 1992 has been hotter than 1992. "
During the first century of the Medieval Warm Period, someone could have written this: "Every single year since 1000 has been hotter than 1000. Every single year since 1056 has been hotter than 1056. Every single year since 1092 has been hotter than 1092."
The Earth warmed for about two centuries, until around 1200. Then a decline began, and around 1350, the Little Ice Age started.
I wonder if people guessed correctly in the 11th century that the Sun was causing that warming trend?
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