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The cupping craze at the Olympics has led every morning TV show to conduct their own cupping in the name of research. CNN's Jeanne Moos reports.

Serena Williams' reign as Olympic singles champion came to a shuddering halt Tuesday as the tennis star suffered a shock defeat by Ukraine's Elina Svitolina.

Iran's former hard-line leader is pressuring President Barack Obama to return billions of dollars in seized Iranian assets, though it's almost certain his appeals will go nowhere.

It's come to this. Donald Trump said on Tuesday that his opponent Hillary Clinton "wants to abolish, essentially abolish the Second Amendment. By the way, if she gets to pick her judges, nothing you can do, folks." Trump followed his claim, which was not supported by any source or proof, with a not-so-veiled suggestion, adding, "although the Second Amendment people, maybe there is."

Aside from the candidates themselves, the 2016 Republican and Democratic Conventions felt oddly familiar. Both parties had elaborate stages and podiums, slick video introductions, recognized musicians, goodies for their guests and no shortage of balloons.

Hillary Clinton's campaign, seeing vulnerabilities for Donald Trump in Arizona and Georgia, says it plans to expand their political and organizing operations in the two states in the coming weeks, according to Democrats with knowledge of the plans.

Even as US diplomats were strongly urging Argentina's military to improve its human rights record during the country's so-called Dirty War, a top White House official argued against strongly punishing the junta for its crackdown on dissidents.

More than half a century before the Zika virus grabbed international headlines and photos of newborns with abnormally small heads were splashed across our screens, a different outbreak that affected pregnancies fueled change in the United States.

Video shows the father of Orlando gunman Omar Mateen attending a Hillary Clinton campaign rally in Florida. CNN's Brian Todd reports.

Donald Trump frequently cites things that he says he's hearing or that "everybody is saying."

It's a dynamic that just about any parent can relate to: Your child does something wrong, such as hitting their sister, or yelling at a friend, you encourage them to apologize, they refuse and then barely say the word "sorry."

Kansas state police are investigating the death of a child Sunday on a water slide at the Schlitterbahn water park.

Cancellations and delays caused by a crippling computer system failure have spilled into a second day, the airline said as it continued to wrestle with the crisis.

US troops abandoned equipment and weapons after they came under fire from ISIS fighters, the Pentagon acknowledged Tuesday.

Yuri van Gelder lived up to his reputation as the bad boy of gymnastics after he was thrown out of the Rio Olympics by the Dutch team for an unauthorized night out drinking.

With 29 electoral votes, Florida is the biggest prize of the battleground states. But the difference between winning and losing the Sunshine State is often very small.

Google account manager Vanessa Marcotte, 27, was found dead near her mother's home in Princeton, Massachusetts, a small town of fewer than 3,500 people.

She might not have won an Olympic medal. But rugby player Isadora Cerullo had already won girlfriend Marjorie Enya's heart when she accepted her marriage proposal in Rio de Janeiro Monday.