* What the reaction in Boston says about post-9/11 America.
* Andrew Cohen on what's next, legally, for Dzhokhar Tsarnaev. Bonus: why not to worry about the Miranda question.
* Rethinking the concept of the United States.
* Right wing extremists remains a domestic threat.
* Chart-tastic! Know your Mars rovers.
* Author Iain Banks reveals he has terminal cancer.
* 'Nine fictional female teens we wish we were like in high school.'