I knew about all those little digesters that live in my intestines, and the little critters that live in my eyelashes and eat dead skin cells, but I always thought of them as being a bit like helpful hitchhikers. But that my own cells (though they aren't my cells, really) should be mostly of some other species than the one I've mistakenly thought myself to be is just terribly unnerving. In fact, I'm somewhere between 500 and 1000 other species. So is George Bush. The President is actually a colony of non-human species! We are being ruled by bugs! No wonder things haven't been going well!
The article is not available in the Geographic's online edition. Consider yourself lucky that you can't read it! I'm going to have a hard time sleeping today, I think. The microbes probably won't, though, so I ought to be 90% rested even if I never close my eyes again.