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A clinical trial for an HIV vaccine has been discontinued since the vaccine was not found to prevent infections of human immunodeficiency virus, the virus that causes AIDS.

CNN's John King speaks with four Iowa voters about who they support for the Democratic nomination in the 2020 presidential race.

Iowans will choose between a crowded field of top candidates on Monday night in the first opportunity for voters to weigh in on who should face President Donald Trump in November.

Six passengers on a Greyhound bus headed from Los Angeles to San Francisco were shot early Sunday morning, the California Highway Patrol said.

The first of Wuhan's two new medical facilities dedicated to coronavirus patients has been completed, after more than 1,000 workers and 100 machines worked non-stop for days.

Minutes after the Kansas City Chiefs won their first Super Bowl in 50 years, President Donald Trump sent a congratulatory tweet to the team's fans and the state of Kansas.

Patrick Mahomes keeps rewriting the NFL history books, and the wait for the Chiefs -- and for their head coach -- is finally over.

Stephen King has quit Facebook after voicing concerns about false information and privacy.

A Detroit man is recovering after a woman he was kissing bit off his tongue, according to the Macomb County Prosecutor's Office.

A man has been shot by armed officers in Streatham, south London, in a terrorist-related incident, London's Metropolitan Police said on Sunday.

President Donald Trump's senior adviser Jared Kushner told CNN that if Palestinians can't meet certain conditions under the administration's Middle East plan, then he doesn't believe Israel should take "the risk to recognize them as a state."

In China, Wuhan used to be known as a city of cherry blossoms, an economic engine of the central heartland, and the birthplace of a century-old revolution that brought down the country's last imperial dynasty.

Officials in China have started using drones equipped with speakers to warn citizens to wear masks as coronavirus continues to spread in the country.

For the first time ever, Iowa Democrats will get a chance to caucus in the Caucasus.

Children are bearing the brunt of the latest escalation in the nine-year Syrian civil war as civilians face a bleak choice — leave for a life of misery in overcrowded makeshift camps or die.

The Trump administration's controversial visa and travel bans has now been extended to include more countries.

Could a traditional Chinese medicine help fight the Wuhan coronavirus, or is one of the country's most influential state media outlets promoting pseudoscience and false hope?

• The UK has left the EU. The global implications are huge

The number of confirmed cases of the Wuhan coronavirus is nearing 12,000, as the epidemic continues to spread worldwide, sparking travel bans and outbreaks of ugly anti-Chinese xenophobia.

Mark Zuckerberg says Facebook will stand up for principles like free expression and encryption, even if it means facing a backlash.

Brexit has happened. After 1,316 days of political turmoil, the UK now stands alone as the first nation to have ever left the European Union.

The Great Firewall of China has always been annoying, but it's not usually this deadly.

Streets are empty and markets are closed in Chinese cities that are home to millions of people. See these first-hand accounts of life in China during the coronavirus outbreak.

An SUV breached security checkpoints heading toward the main entrance of President Donald Trump's Mar-a-Lago retreat in Florida on Friday, and officials shot at the vehicle, the Palm Beach Sheriff's Office said.

Kobe Bryant's family is requesting privacy following the death of the NBA star and his daughter, saying inaccurate reports are only adding to the pain for his grieving loved ones.

On a French newspaper's front page last weekend, big block letters announced "Yellow Alert" next to an image of a Chinese woman wearing a face mask. Another headline in the same paper read "New Yellow Peril?" above an article about the ongoing Wuhan coronavirus outbreak.

They left Iran with valid visas in hand. But hours after landing in the US, they were forced to turn back on flights they never expected to take.

Republican Sen. Lamar Alexander of Tennessee said late Thursday he would oppose calling witnesses in the Senate impeachment trial of President Donald Trump, a decision that means the trial is all but certain to come to a swift end without hearing from witnesses or subpoenaing documents.

America's latest "national nightmare" will not end when Republicans vote to acquit President Donald Trump of high crimes and misdemeanors, possibly as early as Friday.

It's been almost four years since the United Kingdom voted to leave the European Union - and it's been quite the journey. CNN takes a look at how Brexit unfolded.