While getting ready for work, I just heard on the radio what happened this morning while we Yanks slept. I flipped on the TV and was greeted with horrific images from central London. Although the causes aren't clear and all of our broadcasters here (with the exception of Fox News, of course) are qualifying their speculations, certainly these explosions in the Tube and on double decker buses smell like a coordinated terrorist attack, particularly given the multiple locations and the fact that it occurred during the morning rush hour.
To all my British readers, I offer my best wishes, sorrow, solidarity, and hope that the explosions are over. If this is indeed a terrorist attack, as it seems to be, I also hope the bastards who did this are caught and punished. (I have a personal stake in this, because a postdoctoral fellow of mine, who is British, recently left my lab and is scheduled to go back to London with her husband in about a week.)