I was hearing the most amazing announcements on the underground today. Several lines, including the Circle line, were effected, having delays or portions of travel canceled. But trains had interrupted service due to "an unexploded WWII bomb!" Coworkers inform me this happens one or two times a year. Usually they are found in someone's garden. This one in Bromley-by-Bow is the largest one they've found since the 1970's. Apparently it was making ticking and fizzing sounds during the removal and defusing process. Of course, service will still be disrupted tomorrow morning. This is something that Americans have a hard time imagining. So many bombs were dropped here and a significant proportion never went off. Very strange experience from my perspective, certainly.