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A married couple apparently killed two police officers and another woman in Las Vegas. The husband and wife, also killed in the shooting, appear to have held anti-government and anti-law enforcement views.

With the help of grow lights and air exchange fans, NASA is growing lettuce on the International Space Station. The scheme could help keep food costs down — and keep astronauts happy tending plants.

The Environmental Protection Agency has announced strict new carbon emissions regulations. Washington state has the largest reduction target — about 72 percent overall.

NPR's Tom Goldman talks with Robert Siegel from in Rio, Brazil, about Friday's World Cup matches — between Brazil and Colombia, and between Germany and France.

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.

The Common Core has arguably become the most contentious issue in American education. Experts face off over the new state standards in the latest Intelligence Squared debate.

The 150-city protest for a minimum wage hike comes at a time when other changes are putting more pressure on businesses to pay their workers more. Home health care workers joining the fight also raises the issue of overtime rules, which are expected out from the Labor Department in November.

Chronic stress can lead to heart disease, cancer and other health problems. A study shows it doesn't matter if the stress comes from major life events or minor hassles. Time to take a deep breath?

For the first time, the Vatican has put one of its own under house arrest for alleged sex abuse of minors. Josef Wesolowski is the Vatican's former ambassador to the Dominican Republic and was defrocked in June.

Robert Siegel talks with Buffalo News reporter Lou Michel, who's been out on the street covering the aftermath of the Buffalo snow storm.