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Top finishers in the Atlanta half marathon are calling for U.S. track officials to ensure that Jess McClain and two other athletes aren't excluded from the world championships because of an error.

Enron founder Kenneth Lay and former CEO Jeff Skilling go on trial Monday in Houston. Federal prosecutors will argue that Enron's top executives misled and defrauded investors through deals and statements designed to conceal growing losses at what was once the world's largest energy trading company.

The evolution of artificial intelligence has exploded over the past five years, leading to computers that can drive and talk. New York Times' Cade Metz explains how machines are learning on their own.

Echoing comments made Monday by President Obama, Attorney Gen. Eric Holder also said that even if no laws were broken it was "outrageous" for the IRS to focus on groups who identified themselves as "patriots" or "tea party" supporters when they applied for tax-exempt status.

In a step toward fuller disclosure, the agency is asking more questions of the entities whose multimillion-dollar ad budgets helped clog the airwaves during election season.

The tiny European country of Moldova isn't known for much of anything, and especially not its wine. But its winemakers are trying to find new export markets and overcome their post-Soviet reputation.

The recent protests in Brazil highlighted poor public transportation services. Now, politicians who rely on frequent helicopter flights, even for short trips, are under scrutiny.

Professor Chris Lowry needed to collect information on stream levels in Western New York but didn't have enough funding for the traditional methods, so he turned to a more creative option: crowdsourcing. Guest host Linda Wertheimer speaks with him about his research and the future of crowdsourcing in scientific inquiries.

In their quest for a sixth title, the Tar Heels handily defeated the Orange, 83-66. North Carolina moves on to face Villanova, playing for their second championship, on Monday night.

Meditation can help relieve chronic back pain, and so can cognitive behavioral therapy, a study finds. But good luck getting insurance to pay for it.