How heart trouble can occur, despite being fit; Soldier in Fort Hood trial makes startling admission; Did pilot error play role in LaGuardia crash landing?; Al Qaeda at war with US-backed Yemeni government; Member of extremist group charged in Benghazi attack; Man charged with killing three at town meeting; Obama greeted cordially by Ariz. governor; Sharks flock to Cape Cod, drawn to big seal population; Encouraging news on childhood obesity; Controversial girls’ T-shirt pulled from shelves; View the stolen Cannes jewels; Live to 120? No thanks; Brian Williams on the road to recovery after knee surgery; Bold CEO Jeff Bezos revels in risk.Aug. 7, 2013
