One department store video "has confirmed that a suspect is seen dropping a bag near the point of the second explosion and heading off, " Murphy said.

NPR: Image Leads To Hunt For Boston Bombing Suspect

"One of the department stores down on Boylston Street submitted video system which has confirmed that a suspect is seen dropping a bag near the point of the second explosion and heading off, " Murphy said.

NPR: Boston Official: Video Footage Shows Bomb Suspect

Even as the country's overprotective parents whip themselves up into a moral panic about kid-on-kid cruelty, the numbers don't point to any explosion of abuse.

WSJ: The Panic Over Bullies

They also point up the explosion of sponsored roundabout art that has been taking place over the last decade or so - barely a circular traffic facility survives unadorned by some striking image, figurative or symbolic, inspiring or playful.

BBC: Sheep on Shoreham roundabout

Her second point is that there has been an explosion in the number of do-gooders descending on disasters since the Ethiopian famine in 1984.

ECONOMIST: What's wrong with emergency assistance?

Meanwhile, they neglected huge new opportunities in photography like the explosion in 35mm film that followed the introduction of the 35mm "point-and-shoot" camera.

FORBES: How an outsider's vision saved Kodak