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Robots from around the world are competing in a Pentagon-sponsored robot "Olympics" this weekend. The challenge is to build a robot that can do human tasks and even go into disaster zones.

For a long time, archaeologists weren't sure what to make of the cookware excavated at ancient Mycenaean ruins in Greece. That is, until one researcher built replicas of the vessels to try to cook just like the Mycenaeans did.

Alice McKennis has a metal plate and 11 screws in her leg after breaking it in 30 places in March. She's had other injuries before that, but she says it gives her an edge over the competition. "To make the Olympics is extremely hard," she says, "so it takes a certain kind of toughness."

This super cold air is usually whirling around the Arctic. But a big piece has plunged further south than normal. One way to think about what's happening: If a spinning ice skater extends her arms, she slows down. Sometimes, she wobbles and falls. The polar vortex has sort of stretched out an arm.

With 51 percent of machinists voting yes, a new labor pact was approved. It means production of the new 777X widebody jet will be done in the Puget Sound region. But many in the rank-and-file think they gave up too much to keep the jobs in Washington State.

Although it may be uncomfortable for patients to learn that there are profound disagreements among doctors about medicine, these differences of opinion are common.

The burden for retirement planning has shifted dramatically, from traditional pensions run by experts to 401(k)s that require decisions by "gravely undereducated investors, Vanguard founder John Bogle says. He says the government should set minimum standards to protect retirement plans.

While Mexican immigration to the U.S. has slowed in recent years, the number of Central Americans heading north has been on the rise. Last year, the number of illegal border-crossers caught from countries other than Mexico hit nearly 100,000 — more than double the year before.

United Nations prosecutor Carla del Ponte has told Swiss news outlets that there's evidence pointing at the opposition, not the Assad regime. The U.N. says no "conclusive findings" have been reached. The White House is skeptical about del Ponte's comments.

Three witnesses, billed as whistle-blowers, expressed sadness and frustration with how the military and White House responded to the Sept. 11, 2012, attack that killed the U.S. ambassador.