Andy Carvin

Fans of NPR's Weekend Edition Saturday no doubt noticed the absence of longtime host Scott Simon in recent weeks. What started as a well-earned vacation took a somber turn, as Scott told his Twitter followers on July 16 that his mother was in need of an emergency operation. "I can't talk. I'm surrounded by handsome men," he quoted her as saying while she was prepped for surgery.

As protests against the Turkish government enter their third week, activists are taking increasingly creative measures to maintain their momentum.

As news broke about the NSA collecting telephone records through Verizon, people took to Twitter to voice their opinions. As an experiment, NPR senior strategist Andy Carvin asked his followers to respond to the hashtag #CallsTheNSAKnowsAbout. Their responses ranged from the hilarious to the poignant.

(Andy Carvin, NPR's senior strategist for social media, sends us this dispatch about a Twitter account that may hold clues in understanding the surviving Boston bombing suspect.)