>> well, it's been buried for somewhere between 15 and 34 million years, that's a long time. jon: yeah. the russians have been pulling up these core samples. why has it been so difficult to do this? i mean, we've known how to drill deep for a long time. >> well work the reasons. one, they didn't want to contaminate the lake, so they didn't want to get any of the drilling fluid into this pristine lake. the other thing is, it's the ice is really warm, and it freezes things up really quickly, so it was hard. jon: all right. so they drill down, they finally have reached the water that is not solidified, not frozen. what are they hoping to learn, what are you hoping to learn from that water? >> well, i hope they're going to learn what can actually live in these environments underneath two miles of ice, because it's kind of like the environment in outer space, like in the moons that spin around sat turn and jupiter. jon: so there are indications of microbial life in this water? >> well, we have samples that