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After being a problem in Africa and southern Asia for decades, chikungunya has made its way to the Caribbean. The mosquito-borne illness attacks the joints, causes fever, headaches and arthritis symptoms. There are no vaccines and treatments for the virus.

Who wouldn't want something better than mammograms for breast cancer screening? But machines that extract breast fluid to look for abnormal cells aren't it, according to the Food and Drug Administration. Still, some doctors have been offering the test to patients.

For the first time, a woman has been named CEO of a major U.S. automotive company. Mary Barra, 51, breaks a glass ceiling in one of the most male-dominated industries in the nation. But women buy more than half the cars in America, so the question is why it took so long.

The latest budget deal from Washington includes provisions that would make new federal workers contribute more toward their retirement. And changing the rules for public pensions has been happening for a while at the state and local level.

A new study suggests that individual political biases might have caused 2012 GOP presidential nominee Mitt Romney to literally look different to Republicans than Democrats.

George Rodrigue took the legend of the Cajun werewolf and transformed it into instantly recognizable portraits of a quizzical blue dog framed by different landscapes.

Talks were paused earlier, after the U.S. expanded its blacklist to include more than a dozen firms doing business with Iran's national tanker company.

Meanwhile talks with the European Union over a trade deal seemed to sour further. An EU official said Ukraine's "arguments have no grounds in reality."

The young ruler of North Korea stunned the world when he ordered his uncle executed. Now, observers are reading the tea leaves for a sign of what's to come.

This week, the Food and Drug Administration proposed a voluntary program to help reduce the use of antibiotics in animals raised for their meat. As the use of these drugs has increased, so has the incidence of drug-resistant bacteria. So the FDA is concerned about the public health impact of the use of these antibiotics. Arun Rath speaks with Maryn McKenna about the plan, and how it might work. McKenna writes for Wired Magazine and is the author of Superbug: The Fatal Menace of MRSA.