At the White House, the nation's highest honor for valor in action will go to 24 men — three of whom are still alive. Most were Jewish or Hispanic and had been unfairly passed over.
In 2010, 15 percent of people who went to the doctor for a headache got a brain scan, even though the vast majority of headaches aren't symptoms of something seriously wrong.
As the search for Flight 370 and the 239 people on board continues, investigators are pursing many possibilities. One question: Was the crew overcome by smoke?