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The cold snap that hammered Dallas five days ago is still creating problems. Thousands of people remain without power. Some truckers remain trapped at rest stops. And an unusual phenomenon called "cobblestone ice" is hampering crews from de-icing interstate bridges, overpasses and off-ramps.

The family had gone to an abandoned mining town in northern Nevada to play in the snow and didn't return. They faced subzero temperatures.

Without a farm bill, dairy policy will revert to 1949 law, and wholesale milk prices could double. But the Senate Agriculture Committee chairwoman says she expects a bill to pass in January, in time to avert a spike in milk prices.

Ex-actress Shannon Guess Richardson, who had minor roles on The Walking Dead and The Blind Side, says that she tried to frame her estranged husband for the tainted letters.

As of Nov. 30, more than 137,000 people had obtained health insurance through the federal website. Another 227,000 got coverage through the state exchanges. Users have until Dec. 23 to sign up if they want the health insurance coverage to start Jan. 1.

When it comes time to fertilizing a cornfield, most farmers use huge machines that weigh at least 10 tons. But three brothers in Minnesota have created a tiny robot they say can do the same job much more efficiently.

As Nelson Mandela is laid to rest, guest host Celeste Headlee asks if there's another activist who might galvanize the world in the same way. She speaks with Nicholas Kristof of The New York Times and Human Rights First's Brian Dooley.

The U.S. is suspending non-lethal aid because of infighting among the various factions opposed to President Bashar Assad. The rebel Free Syrian Army, which has lost ground in recent days to an Islamist group, criticized the decision. the U.K. also has reportedly decided to halt aid.

Durable and imagination-inspiring, blocks can provide a solid foundation for learning and creativity.

A doctor, a vegan, a researcher and a farmer recently waded into a hot-button topic in the food world: Is it a bad idea to eat meat? They delve into the medical, ethical and environmental arguments in the latest Intelligence Squared U.S.