Permafrost chasers

The last panel is obscured by the agilent ad - even after settings were cvhanged.

I love XKCD. http://xkcd.com/463/ is my most recent favorite, but >90% of them are brilliant.

These results are backed-up by another study on soil carbon in Siberia and Alaska, published in BioScience:

http://news.mongabay.com/2008/0901-permafrost.html

these results also indicate double the amount of soil carbon than previously suggested... hmm, interesting times are ahead. But that's what we already know, don't we?