The Mississippi man originally charged with sending ricin-laced letters to President Obama has been released, as the FBI looks into whether he might have been framed as part of a grudge against him from someone in his neighborhood.
A breakthrough drug has helped a little girl survive after being born without many of her bones. Janelly Martinez-Amador was born with hypophosphatasia, a genetic disease that disrupts the mineralization process of a person's bones and teeth.  The disease occurs in about one out of every 100,000 infants, and Janelly had the most severe form of the condition – which is usually fatal.
Homeland Security Secretary Janet Napolitano said Tuesday that the government's internal system "pinged" when Tamerlan Tsarnaev left the U.S. for Russia last year, in a statement that appeared to conflict with earlier suggestions that the trip went unnoticed.
The brothers suspected of planting deadly bombs at the Boston Marathon may have gotten their ideas - and even instructions on how to make explosives from household items -- from an English-language website that Al Qaeda uses to radicalize and recruit Westerners.