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Siberian Times states that thousands of bulging methane gas bubbles have been located in Siberia. These are thought to explode to form the giant craters found in the area. Scientist say it's thawing permafrost releasing methane caused by elevated temperatures. Article contains amazing pictures.
Similar observations have been made around the Arctic regions. This is a cause for concern as methane is a potent greenhouse gas creating a positive feedback loop; there is potential for a chain reaction.
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7,000 Underground Gas Bubbles Poised to 'Explode' in Arctic
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revolutionary, adj.:
Repackaged.
(Score: 4, Informative) by Scruffy Beard 2 on Saturday March 25 2017, @06:31PM (1 child)
I dug up that chart [wikipedia.org].
Your conclusion of an impending glaciation are unsupported. The horizontal red line is "current" (for when the chart was made) temperatures. Present CO2 and Methane concentrations are unprecedented. That fact is easy to miss since it happened in such a short period on the geological time scale.
(Score: 2, Informative) by Anonymous Coward on Saturday March 25 2017, @08:41PM
FWIW the image in question was in breach of Wikimedia Commons policy as it doesn't allow commercial use and consequently was removed. It is page 19 of https://regmorrison.edublogs.org/files/2012/03/Climate-Debate4-1if6jnl.pdf [edublogs.org]