Oil Change International  Exposing the true costs of fossil
fuels  Methane Leaks Alarm Scientists  In the fallout from the
Durban conference, one of the debates I have heard is people
debating what keeping warming to 2 degrees means, rather than
letting warming increase to 3 degrees or even 4 degrees.  One of
the answers was that if warming goes above 2 degrees the chances
of a runaway greenhouse effect happening increases. And one way
this happens is through the kicking in of positive feedback
mechanisms.  And one of these regards the potent greenhouse gas
methane (which is 20 times more potent than carbon dioxide), and
what lies beneath the Arctic permafrost, or frozen soil.  For
years scientists have warned of a ticking “methane timebomb” in
the Arctic. At the end of last month, in an article published in
the journal Nature, a survey of 41 international experts led by
University of Florida ecologist Edward Schuur revealed that
models created to estimate global warming may have
underestimated the magnitude