russia Putin: US and Russia security services should "combine efforts" in wake of Boston bombing Xeni Jardin
timemachine This Day in Blogging History: Covering the Boston Marathon bombing coverage; Clute on Ballard; Finger booty trick Cory Doctorow
surveillance LA Sheriffs launch crowdsourced crowd control: LEEDIR, a surveillance app that uses your photos and videos Xeni Jardin
Science Ammonium nitrate fertilizer isn't really a dangerous explosive (most of the time) Maggie Koerth