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Many Star Trek gadgets have made the journey from science fiction to real life. Arun Rath talks to Grant Campany about the X Prize Foundation's competition to bring the medical tricorder to life.

At 4:30 a.m., medical student Ryan Klitgaard would wake up to a Nicaraguan newspaper vendor yelling through a megaphone. Then came a day of treating patients — and fending off dogs and chickens.

With Ukraine in an uneasy cease-fire, schoolkids returned to class this month and attempted to resume normal life. They tell what back-to-school feels like when their country's been at war all summer.

Lithuania has called an emergency meeting of the UN Security Council to discuss Russia's new incursions into Ukraine. The issue's also likely to dominate an upcoming NATO summit. Since sanctions seem to have failed to change Russia's calculations, the U.S. and its European partners are still trying to find a way to effectively protect Ukraine's sovereignty.

Summer is high season for "frogging." The North American Amphibian Monitoring Project has hundreds of volunteers crisscrossing the country to get a better handle on the fate of the nation's frogs.

The 150-city protest for a minimum wage hike comes at a time when other changes are putting more pressure on businesses to pay their workers more. Home health care workers joining the fight also raises the issue of overtime rules, which are expected out from the Labor Department in November.

For the first time, the Vatican has put one of its own under house arrest for alleged sex abuse of minors. Josef Wesolowski is the Vatican's former ambassador to the Dominican Republic and was defrocked in June.

Video footage from earlier in the day showed protesters using umbrellas to try to deflect pepper spray and water cannons as officers attempted to disperse the crowd.

Voting might not be the sexiest thing in the world, but at least one ad campaign encouraging Americans to register is pretty provocative.

Chronic stress can lead to heart disease, cancer and other health problems. A study shows it doesn't matter if the stress comes from major life events or minor hassles. Time to take a deep breath?