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And I was just recently going through a National Geographic book. I was down doing some grocery shopping midweek. As I was standing at the line up, I happened to look over at the magazine rack, and there was a National Geographic book there, and it was one of their specials, a periodical, Are We Alone? And I thought I'd pick that up. And there's a couple of things there tonight I thought I would mention too. We'll do that a little later on. Where are all the extraterrestrials? And what counts as life? And how can we find it in space? And there's a bit about how to define life. That is ongoing. I mean, most of us look around, and we can kind of determine ourselves without any specific scientific data what constitutes life. But finding it on other worlds, it might not be anything like what we see on Earth. So we wouldn't even know life if we actually come upon it. I've talked about that on one of the nets too. But I thought this would be kind of an interesting adjunct to that.