PROOF THAT GREENLAND WAS WARMER JUST 7000 YEARS AGO

The first study from GreenDrill—a project co-led by the University at Buffalo to collect rocks and sediment buried beneath the Greenland Ice Sheet—has found that the Prudhoe Dome ice cap was completely gone approximately 7,000 years ago, much more recently than previously known, says Phys.org.  When sediment is buried, electrons can become trapped inside its tiny mineral grains due to natural radiation and remain there until the sediment is exposed to light again, at which point they produce a measurable glow.

 Greenland’s Prudhoe Dome ice cap was completely gone only 7,000 years ago, study finds | Tallbloke's Talkshop