Thanks for the links, Orac. All very interesting, especially the last, which reads like sci-fi and concludes:

"The mystery of why there is so much ordinary matter in the universe and so little antimatter has long exercised theorists and experimentalists alike. It's at least conceivable that part of the answer lies in the spectrum of antihydrogen. If so, the ALPHA collaboration is on the path to finding it."

"Time is what prevents everything from happening at once" - John Wheeler