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A new study suggests that there's a slight increase in the risk of brain cancer and leukemia associated with CT scans for children. Experts say, in most cases, the risk doesn't not outweigh the benefit of the CT scan, but call on doctors to be more selective in ordering them. Audie Cornish talks to NPR's Rob Stein about the study.

An influential Republican in Wisconsin says Gov. Scott Walker's win in Tuesday's recall election shows the GOP governor's action on the state's budget resonated beyond the base. But, says Don Taylor, the chairman of the GOP in Waukesha County, its effect on the presidential election in November is uncertain.

CT scans provide exquisite pictures of what's happening inside the body, but they use a lot more radiation than standard X-rays. A British study details the future cancer risks from CT scans of children.

Some schools, looking to cut costs, are intrigued by so-called robo-readers, computer programs that grade students' writing and offer feedback. Some teachers find the programs helpful in the classroom, but skeptics say they're not always the best judge of writing ability.

Scott O'Neill's big idea to rid the world of dengue is both clever and complex: He wants to infect mosquitoes with bacteria so they can't carry the virus that causes the disease. But, it turns out sticking mosquito eggs with a needle full of bacteria isn't easy. "It's incredibly frustrating work," he says.

When you're the first lady, squeezing in a workout between briefings and state dinners can be tricky. Obama says that when she's selecting her exercise music, variety is key.

Defense Secretary Leon Panetta has arrived in Afghanistan to review the progress of the war and to discuss plans for withdrawing forces. Panetta's trip comes a day after a Taliban attack in southern Afghanistan left more than 20 people dead and at least 50 wounded.

Following last year's revolution in Tunisia, moderate Islamists now head the government in Tunis. While many Tunisians say hard-line Islamists threaten the country's nascent democracy, others worry the economy is being ignored.

New research shows that booms and busts in the housing industry help determine where high school students apply for college. Booms trigger applications to better colleges, busts to lesser quality schools.

You have a chance to pick-up some property at a greatly reduced price. Tulsa County Treasurer Dennis Semler has scheduled a delinquent tax sale for…