Tag Archives: Greenland

New date of 58 million years undercuts idea that strike triggered recent 1000-year plunge in temperatures In 2018, an international team of scientists announced a startling discovery: Buried beneath the thick ice of the Hiawatha Glacier in northwest Greenland is an impact crater 31 kilometers wide—not as big as the crater from the dinosaur-killing impactContinue reading “Controversial impact crater under Greenland’s ice is surprisingly ancient”