More than 80 percent of #Greenland is covered by #ice, some of which is more than 110,000 years old. The 57,000 people who call the #world’s largest #island home make their living largely from #fishing, #mineral extraction, and tourism—sources of income that may be jeopardized by the ongoing thaw caused by global warming. #photooftheday #science #globalwarming #climatechange #earth #iceberg #glacier 📷: Courtesy of Shutterstock