*Boston Lockdown. In a massive manhunt for the remaining bombing suspect, residents are told to stay locked indoors.
*Boston Chechnya Link. With the identity of the alleged bombers revealed, eyes turn toward the troubled Northern Caucasus.
*Musharraf Arrest. Pakistan's former leader is confined to his house and faces a reckoning from the people he once ruled.
*Plant Music. A UK garden expert recommends heavy metal to grow big bloomers.
*Cod Stocks Study. The truth is, they're not coming back, according to a new study in the journal, Science.
*Warsaw Museum. On the 70th anniversary of Poland's Jewish uprising against the Nazis, a new museum opens.