Heading into zero gravity
UC San Diego students are in Houston, on a NASA plane, this week to investigate what happens in the heads of astronauts during weightlessness. They are part of NASA's Microgravity University, which offers selected students a rare chance to do research in near-zero gravity.
Can mass transit solve city sprawl?
Commuters in Los Angeles spend some 60 hours a year stuck in traffic. But that could change, some experts say, as the city ramps up its mass transit.
National Public Radio
E-cigarettes raise new questions about smoking
'Vaping' is so new that there are few studies available on what the risks are.
Washington Post