Greenland Ice Sheet Reaches 'Tipping Point'
![](https://media.wnyc.org/i/800/0/l/85/2018/10/AP_17223189390115.jpg)
Iceberg floating in the Nuup Kangerlua Fjord in southwestern Greenland, 2017. Greenland's glaciers have been melting and retreating at an accelerated pace in recent years due to warmer temperatures.
( David Goldman / AP Photo )
( David Goldman / AP Photo )