Today in London

I woke up to the news that a series of small explosions have ocurred on a bus and on London Tube trains (including Warren Street which I used to use everyday when I was a postdoc at the Middlesex Hospital). The bombs seems to have done little damage and there are no news of casulaties as yet. Their immediate effect appers to be nuisance value; I hope they don't herald a campaign of terror although I'm not particularly optimistic.