As with most of the environmental problems that we face, this is something that is only going to get worse if we continue living the way we do.  Sadly, its something that we can probably still turn around if action is taken before we hit the ‘tipping point’.  Locked in the permafrost of the north is a vast, frozen sea  of methane that has been stored for millenia.  If we see that begin to melt……well, there’ll be no turning back.  The ice that encompasses much of the north …