@CNN: This is one of thousands of giant sinkholes in Greenland, where water is draining through the ice sheet into the ocean, contributing to rising seas https://t.co/rm0MjDaGb1 https://t.co/pd8tWaA2mB

@CNN: This is one of thousands of giant sinkholes in Greenland, where water is draining through the ice sheet into the ocean, contributing to rising seas https://t.co/rm0MjDaGb1 https://t.co/pd8tWaA2mB