Slashdot linked up news that those famously isolated antarctic lakes may not be all that isolated after all:

In a Letter to Nature [scientists] report that rivers the size of the Thames have been discovered which are moving water hundreds of miles under the ice. The finding challenges the widely held assumption that the lakes evolved in isolated conditions for several millions years and thus may support microbial life that has evolved 'independently'.

Somewhere out there I'm sure a guy with a kayak has just had a dream.