If you've been feeling that climate \change has been running ahead to schedule, there may be a reason for that. This episode of NOVA lays it out. Spoiler alert, it's permafrost thaw and perhaps fossil methane chimneys.
"Thawing permafrost, right now on NOVA" apparently doesn't attract Viewers Like You, so producers looked for a sexier hook. What they found was arctic sinkholes, first seen in Russia's Yamal peninsula. At first glance, maybe large-scale, remote versions of sinkholes like those that have been swallowing cars around the world. Nope. These are explosion craters surrounded by debris fields. The calls are coming from inside the house. "Arctic sinkholes, right now on NOVA." Now we've got an episode.
The focus of the program is nevertheless permafrost thaw and the investigation of an ongoing release of ancient methane previously deemed safely sequestered. Nontrivial new greenhouse gas emissions that were not accounted for in the 2015 Paris Accords. So yeah, it's worse than we thought.
Colossal explosions shake a remote corner of the Siberian tundra, leaving behind massive craters. In Alaska, a huge lake erupts with bubbles of inflammable gas. Scientists are discovering that these mystifying phenomena add up to a ticking time bomb, as long-frozen permafrost melts and releases vast amounts of methane, a potent greenhouse gas. What are the implications of these dramatic developments in the Arctic? Scientists and local communities alike are struggling to grasp the scale of the methane threat and what it means for our climate future.
And as your science sommelier, I will add that this selection pairs nicely with Before the Flood.
No comments:
Post a Comment