Seven giant craters have mysteriously appeared in northern Siberia, possibly due to methane gas released from melting permafrost. And scientists think may be dozens more.
The rest of the story
livescience.com
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Photos of Siberia's Mysterious Craters
Seven giant craters have mysteriously appeared in northern Siberia, possibly due to methane gas released from melting permafrost. And scientists think may be dozens more.
The rest of the story
livescience.com
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