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Robert Malley, a program director for the International Crisis Group, analyzes the complexity of the situation in the Middle East, a region where conflicts interconnect and expand upon one another. "These alliances," says Malley, "are not clear cut ... they are alliances of convenience."

Despite good intentions, tracking food waste with a high-tech software system just didn't work for one of Mario Batali's exclusive restaurants. Restaurants waste about 10 percent of the food they buy, but getting that to change will require winning hearts and minds.

The chemicals are meant to prevent a sofa from going up in flames, but there are concerns about health risks. With efforts to ban the chemicals moving slowly, the solution for now may be a simple vacuum cleaner.

Record-high fuel costs have hammered airlines, forcing executives to eliminate flights, cut back on unprofitable routes and make passengers pay for many perks that used to be free. Now the airlines are looking at other ways to save money — and they're turning to propeller planes.

Nearly 600 rhinos have been killed this year despite extensive efforts by South Africa and other African nations to protect the animal.

A peer-reviewed study found that the sea was rising 60 percent faster than the U.N. estimated. It means that low-lying cities may need to prepare for more severe floods than had been expected.

A 21-year-old was arrested after she questioned the shutdown of Mumbai for the funeral of a controversial political leader; her friend was arrested for simply "liking" the post. The comment angered the politician's supporters, who some say intimidated police into making the arrests.

Whoever bought the winning tickets will be splitting a $580 million jackpot, the second-largest in U.S. lottery history. Now, the wait is on to see who steps forward.

As the White House and Congress debate how to steer clear of the fiscal cliff, one obstacle is President Obama's insistence that the wealthy should pay more in taxes — though recently some Republicans have signaled some openness to raising revenues. One of Obama's proposals is to raise the tax rate on capital gains and dividends.

General Motors says it's building the plant with its joint venture partners in China. Set to open in 2015, it will be the third GM plant in what is now the world's biggest auto market. The company hopes the plant will eventually produce up to 2 million vehicles annually.