There is a current article (in Science, I think) the detection of anti-matter in distant galaxies as experimental evidence for the existance of dark matter, dark matter seems to react with itself to produce anti-matter. I guess if the LHC can shed light on dark matter it will be producing anti-matter as a by-product. I know nothing of the mechanisms for this process, but possibly we will be learning a lot more about this stuff as the machine starts working.

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plenty of woo, at the hotel hoagaland...