Alley, R.R.AlleyMayewski, P.P.MayewskiPeel, D.D.PeelStauffer, BernhardBernhardStauffer2024-09-022024-09-021996https://boris-portal.unibe.ch/handle/20.500.12422/43439Two projects conducted from 1989 to 1993 collected parallel ice cores—just 30 km apart— from the central part of the Greenland ice sheet. Each core is more than 3 km deep and extends back 110,000 years. In short, the ice cores tell a clear story: humans came of age agriculturally and industrially during the most stable climatic regime recorded in the cores. Change—large, rapid, and global—is more characteristic of the Earth's climate than is stasis.en500 - Science::530 - Physicsarticle10.48350/158842