In 1966, the U.S. Army drilled through 1.4 km of Greenland ice; decades later, forgotten soil from the core revealed preserved leaves and twigs

A 1966 U.S. Army drilling expedition in Greenland unearthed preserved leaves and twigs, indicating that the region was once ice-free. This discovery raises concerns about the stability of the Greenland Ice Sheet in the context of climate change.

Raccontata daeconomictimes.indiatimes.com