May 22, 2013 — A measles epidemic in Wales that has infected more than 1,000 people is the fallout from a fraudulent paper linking the vaccine and autism published almost 15 years ago, health officials say. Many of the children and teenagers sick with measles were never vaccinated.

May 22, 2013 — NASA and Google have come together to buy a new kind of computer that the manufacturer says runs on the strange laws of quantum mechanics. But some physicists counter that the machine, known as the D-Wave Two, has never demonstrated a phenomenon known as "quantum entanglement."

May 22, 2013 — "Someone asked me," Benjamin Franklin once said, "what's the use of a balloon?" They don't do much. They just float. What are they good for? And Franklin replied, "What's the use of a new-born baby?" They just sit there. They don't do much. You have to imagine possibilities. This is Franklin, in the 1780s, thinking about balloons.

May 22, 2013 — The role former CIA Director David Petraeus played in creating the discredited U.S. "talking points" about the violence in Benghazi, Libya, that left four Americans dead, including a U.S. ambassador, last year is under new scrutiny, as a Washington Post story suggests that Petraeus sought to shape the resulting memo to favor his agency.

May 22, 2013 — The Fed chairman cautioned Wednesday that if interest rates were to start rising now, the economy could slump. Meanwhile, the National Association of Realtors said sales of existing homes rose — and would have been even stronger if not for tight inventory.