Arctic Sinkholes I Full Documentary I NOVA I PBS
In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate. Colossal explosions shake a remote corner of the Siberian tundra, leaving...
Tag : NOVA
The Pacific Northwest is due for a Major Earthquake
An 8.0-magnitude-plus earthquake hasn’t rumbled beneath the Pacific Northwest since the 1700s. Now, the region is due for the next “big one” and a subsequent...