Support WBURIs There A Ticking Time Bomb Under The Arctic?Play06:30Download AudioMichaeleen DoucleffJanuary 24, 2018 ShareThe Permafrost Tunnel Research Facility, dug in the mid-1960s, allows scientists a three-dimensional look at frozen ground. (NASA)
The Permafrost Tunnel Research Facility, dug in the mid-1960s, allows scientists a three-dimensional look at frozen ground. (NASA)