Glacial Retreat Shows Warmer Temps 400-600 Years Ago | Heartlander Magazine:
"A retreat of glaciers in the Canadian Arctic shows temperatures were at least as warm as today 400-to-600 years ago.
Scientists carbon-dated plant life exposed by glacial retreat in the Canadian Arctic and found the plants were between 400 and 600 years old. Meteorologist Anthony Watts explained how the carbon dating shows temperatures 400 to 600 years ago must have been at least as warm as today:
“[T]hese plants had to have a warm environment to grow in first, then they were covered by ice, emerging again after the LIA [Little Ice Age] ended."
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