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The world is at greater risk than ever from pandemics and biological weapons, health officials said Thursday. In response, the U.S. government is spearheading a global effort to build an early warning system for infectious diseases, drug-resistant microbes and possible bioterror agents.

Do pushy parents make a baby fatter, or is it all in the genes? That's one of the big puzzles that scientists are trying to answer. Two studies suggest that an individual's interest in food is a big factor, even in babies. A genetic predisposition may be involved.

Talks in Vienna about Iran's nuclear program kick off what could be a year of negotiations. Negotiators are seeking a deal to follow the temporary agreement now limiting Iran's nuclear program.

One year ago, Lauryn Williams had never tried bobsled racing at all; she was only elevated to the elite U.S. women's team 11 days ago. Wednesday, she made Olympic history.

A potentially landmark lawsuit goes to trial Monday in California. At issue: whether job protections for public school teachers undermine a student's constitutional right to an adequate education. The students and parents who filed the lawsuit see it as a potential model for challenging teacher protection laws in other states. Unions and state officials say the lawsuit demonizes teachers and has no merit.

A Beverly Hills auction house has an unusual fossil for sale. It's not an ancient animal. It's something an ancient animal left behind — and it's very, very long.

Over 100,000 residents of Hong Kong marched to demand greater freedom in choosing their leaders. The protest comes on the 17th anniversary of the return of Hong Kong to Chinese rule.

Just over a year ago, NPR's Emily Harris packed up and moved to Jerusalem. She covers Israel and the Palestinian territories, which means plenty of politics and the Israeli-Palestinian conflict.

Italian engineers say they've finally come up with a way to brew espresso on the ISS so astronauts can ditch the instant coffee. We asked: What's so hard about making coffee in space? Answer: A lot.

While Israelis seek refuge from Hamas rockets in ubiquitous shelters, Palestinians crowd into schools to escape Israeli airstrikes. Conditions there grow dire as the conflict drags on.