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Tuberculosis is one of the oldest diseases in human history. Signs of the bacteria have even been seen in Egyptian mummies. Now scientists find evidence that TB is much more ancient than we thought. The bacteria may have started infecting people more than 70,000 years ago, long before farming began.

According to a message sent to NPR's staff, the organization aims to reduce its number of employees by about 10 percent. There are currently 840 staffers. The board says it has a plan to balance NPR's budget in fiscal year 2015.

Ai Weiwei, the world-renowned Chinese artist and dissident, has created a deeply autobiographical work for the Venice Biennale exhibit. It is a series of dioramas about his life as a political prisoner, when he was jailed for criticizing the corruption and shoddy construction that caused the deaths of 5,000 children when schools collapsed in the 2008 Sichuan earthquake.

Jeffrey Zients, the 46-year-old tapped to help solve the Obamacare website problems, is known as a brainy problem-solver with a talent for cutting through bureaucratic knots.

No traditional Danish meal is complete without a piece of pork tucked in somewhere — which helps explain the outrage that followed after some Danish day cares dropped pork to accommodate Muslims. The battle over menus is the latest sign of Denmark's struggle with multiculturalism.

The star of Italy's Euro 2012 team is the Sicilian-born son of Ghanaian immigrants, raised by an adoptive, white Italian family. Mario Balotelli has been subjected to racism on and off the field. Now, his success is prompting a rethink in a country that's notorious for its hostility to immigrants.

Nik Wallenda is the first person to walk directly over the falls. Thousands gathered to watch him inch along a tightrope Friday night. Though the wire was dripping from the mist, Wallenda accomplished a dream he'd had since childhood.

As campaign budgets keep pushing upward, politicians from would-be congressmen to would-be presidents are looking overseas — especially to London. Republican Mitt Romney plans to hold two fundraisers there on his weeklong trip, along with another in Jerusalem.

The Iowa caucuses ended with Mitt Romney's extremely narrow victory over Rick Santorum early Wednesday morning. The first presidential nominating contest of 2012 played out at hundreds of sites across the state. And at the secondary school in Van Meter, voters were packed into the lunch room.

Debt-burdened Greeks go to the polls Sunday to choose between an establishment party, and continuing harsh austerity measures, or a leftist party that vows to replace the current bailout deal. Regardless of which party wins, Greeks know they face years of hardship in a rapidly unraveling society.