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Michael Miller explains what research shows about laughter, stress and heart health.

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ban of hundreds of millions of dollars worth of Canadian products took effect on Tuesday, pinching imports from one of the top U.S.

Flynn was found guilty of killing his wife, Ashley, in February and attempting to blame the murder on a break-in at their home.

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And, prosecutors have reopened a Cornell University fraternity rape case.

Badly wounded and alone in Iran's desert, downed U.S.

Air Force officer prayed while "free-falling" after being shot down in Iran

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Former "American Idol" contestant found guilty in wife's murder

CBS News' Megan Cerullo has more.

The federal law aimed at protecting college students from sexual abuse

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