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As a law that could get TikTok banned in the United States is poised to go into effect, here is a look at the rise of the video-sharing social media platform.

TikTok says it will "go dark" in the United States on Sunday, threatening access to the app for 170 million users, unless the government provides assurances that a law mandating its sale or ban won't be used to punish service providers.

Switzerland's Noemi Ruegg powered up Willunga Hill to win the second stage of Australia's Tour Down Under and claim the leader's ochre jersey on Saturday.

Former Australian Open finalist Elena Rybakina said she will need some "magic" from her physio if she wants to go further in the tournament after a back spasm flared up during her third-round win on Saturday.

Iga Swiatek demolished Emma Raducanu on Saturday to sweep into the last 16 of the Australian Open, where Jannik Sinner will later step up his title defence and young tyro Learner Tien is also in action.

Impeached South Korean President Yoon Suk Yeol arrived at court for the first time Saturday to attend a hearing that will decide whether to extend his detention as investigators probe his failed martial law bid.

Kyrie Irving scored 25 points as the Dallas Mavericks brought the high-flying Oklahoma City Thunder down to earth with a 106-98 victory over the Western Conference leaders on Friday.

Eva Lys made history on Saturday as the 128th-ranked German battled into the fourth round of the Australian Open to set up a meeting with second seed Iga Swiatek.

Emma Navarro credited her billionaire father for teaching her "toughness" as a child Saturday after she ground past Ons Jabeur into the Australian Open last 16.

Iga Swiatek warned Saturday her best was yet to come and the ball was "listening" to her as she sounded an ominous warning to her Australian Open rivals with a third-round rout of Emma Raducanu.

Emma Navarro ended the Australian Open of triple Grand Slam finalist Ons Jabeur Saturday, but it was another scratchy performance from the three-set specialist.

An avalanche of disinformation about a new economic measure proved so tricky for Brazil's government to navigate that they backtracked entirely this week in a rout egged on by the opposition.

A South Korean court will weigh Saturday whether to extend the detention of impeached President Yoon Suk Yeol, after investigators arrested him over a failed martial law bid.

As Los Angeles firefighters battle remaining hotspots more than a week into deadly blazes, scientists and engineers hope growing availability of satellite data will help in the future.

TikTok says it will "go dark" in the United States on Sunday unless the government provides assurances a new law calling for its ban won't be used to punish service providers.

A relentless Iga Swiatek stayed on course for a maiden Australian Open title as she powered into the second week with a statement victory over Emma Raducanu on Saturday.

A re-sentencing hearing for Lyle and Erik Menendez over the bloody murder of their wealthy parents was delayed Friday as Los Angeles grapples with devastating wildfires.

Roki Sasaki is Major League Baseball's hottest new star but he had to struggle through adversity to get there, losing his father and grandparents in Japan's deadly 2011 tsunami.

Jessica Pegula has backed Novak Djokovic's call for more entertainment for fans, saying tennis should become less "stuffy" and "uppity."

Marathon man Jack Draper says Carlos Alcaraz will have a battle on his hands when they meet in the Australian Open last 16, with the Briton showing remarkable staying power to set up the clash.

Israel's cabinet voted to approve a Gaza ceasefire and hostage release deal on Saturday, the office of Prime Minister Benjamin Netanyahu said, ending days of uncertainty about whether the truce would go into effect this weekend.

Charley Hoffman, seeking a fifth US PGA Tour title at the age of 48, had 10 birdies in a nine-under-par 63 on Friday to share the halfway lead in the American Express tournament with Rico Hoey of the Philippines.

Japanese prodigy Roki Sasaki announced on Friday he is joining the Los Angeles Dodgers following a frenzied Major League Baseball battle for the coveted pitcher's signature.

At least 39 people have been killed in violence involving leftwing guerillas near Colombia's restive border with Venezuela, authorities said Friday, prompting the government to suspend high-stakes peace talks with the group.

Skepticism rages about whether Elon Musk actually put in the hours to become a top player of video games "Diablo IV" and "Path of Exile 2."

Elon Musk's self-proclaimed persona as a top-class gamer took a thrashing on Friday, as video game enthusiasts mercilessly mocked the tech billionaire following a disastrous performance in a livestream.

Georgia winger Khvicha Kvaratskhelia on Friday completed a move to Paris Saint-Germain from Italian league leaders Napoli, the French champions announced.

The US Treasury Department will start taking "extraordinary measures" next week to avoid risking a default on government debt, Secretary Janet Yellen said Friday, days before President-elect Donald Trump takes office.

Lille warmed up for next week's trip to Liverpool in the Champions League by coming from behind to beat Nice 2-1 on Friday and climb up to third place in Ligue 1 as they capitalised on Monaco's surprise defeat earlier.

Manchester United and Scotland great Denis Law has died at the age of 84, sparking a wave of heartfelt tributes to a man known at Old Trafford as "The King".

Eintracht Frankfurt overcame the imminent departure of in-form Omar Marmoush to beat Borussia Dortmund 2-0 at home on Friday, heaping more misery on the slumping visitors.

Americans will be hit by a "Trump tariffs tax" if the US president-elect increases customs duties on Canadian products, the Canadian foreign minister said Friday, pledging a hard-hitting response in any trade war.