Research groups from the United States and different nations have found that Greenland’s ice, which was thought to have by no means melted on a big scale for two.5 million years, could have melted throughout a comparatively heat interval about 400,000 years in the past. The analysis group warns that “Greenland’s ice is delicate to local weather change and is susceptible to quickly melting within the subsequent few hundred years.”
Source
“Greenland ice melted 400,000 years in the past” analysis group resembling rice | NHK
