story is breaking. not many details. in the absence of further evidence, I blame Obama. http://www.huffingtonpost.com/2013/04/15/boston-marathon-explosion_n_3086665.html
http://news.yahoo.com/blogs/lookout/dozens-people-injured-explosion-boston-marathon-190955311.htm Warning this is one graphic picture on teh twitter live feed here. So use at your own discretion. Video of the explosion. lhttps://vine.co/v/bFdt5uwg6JZ
Police just set off a third explosion. Controlled explosion on 600 block on Boylston Street. via @BostonDotCom:https://twitter.com/BostonDotCom/status/323886877746790402