Amazing stuff! Global warming aka climate change is normal and has repeated itself over thousands of years!
Possibly, variations in solar activity of the sun are to be blamed!
"... "To our knowledge, the longest sediment cores previously drilled under an ice sheet are less than 10 m," ... "We exceeded our target of 200 m, and undertook this 700 km from the nearest base—this is Antarctic frontier science." ...
The 228 m of ancient mud and rock was drilled from under 523 m of ice at a deep-field camp at Crary Ice Rise on the edge of the West Antarctic Ice Sheet. ...
The new sediment core ... provides a direct and comprehensive record of how this margin of the ice sheet has behaved during past periods of warmth. ...
including time periods when Earth's global average temperatures were significantly higher than 2°C above pre-industrial," ..."
"... The sediment core holds an archive of past environmental conditions from warmer periods in Earth’s history ..."
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