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Unaccompanied, undocumented children from Central America aren't just sparking debate in the Southwest. The question of whether to offer shelter to the minors has led to divided opinions in Iowa.

On Capitol Hill, dogs and their handlers have made the case that all U.S. military dogs should be brought home from war — and treated with the respect they've earned on the battlefield.

Most people can't tell when they're having the irregular heartbeat called atrial fibrillation that puts them at risk of stroke. Simply learning to take your own pulse could help, researchers say.

The plague has reportedly popped up in Oregon. It's the same disease that killed millions in the Middle Ages. Only now we know how to treat it.

The Svoboda and Udar parties pulled out of the governing coalition, prompting Arseniy Yatsenyuk's decision. Parliament's speaker said it was up to the two parties to name a temporary prime minister.

Scientists have discovered what may be the most common virus in people worldwide. The tiny critter doesn't make us sick but may be involved in obesity and diabetes.

The plight of the nearly 30-year-old polar bear, who lost his enclosure mate two years ago, has attracted attention from well-wishers the world over who want him moved.

The presidents of Honduras and Guatemala also called for more aggressive cooperation with the U.S. to curb the violence and poverty they say is driving child migrants to the U.S.

Wal-Mart, the nation's biggest company, affects the lives of millions of workers and shoppers. So its U.S. leadership change is attracting lots of interest. Here are some theories about what happened.

The deal follows a Justice Department report released in April that showed the city's police used excessive force in dealing with many suspects.