An expansion of Medicaid is supposed to cover more of the working poor. But Republican-led states have been opting out and outlying areas in states like Tennessee may be the hardest hit.

Is there such a thing as an unemployment rate that is too low?

There's a fine line that separates addicts from the rest of us, a new book argues. It's not just booze and cocaine you should be worried about, but Twitter and cakes.

German Chancellor Angela Merkel enjoyed close relations with former French President Nicolas Sarkozy but not with successor Francois Hollande. Differences over austerity are part of the problem.