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Records are tumbling, cyclists are crashing, rowers capsizing -- the Rio OIympics have already delivered some thrilling sport and there is a lot more action to come on Monday when the world's best swimmers and gymnasts go head to head.

More than a million Turks united in Istanbul on Sunday night as part of a pro-democracy rally following last month's failed coup.

USA Olympic athletes discuss their diet during training and some of the unusual things they eat as they prepare to compete in the 2016 Rio Olympic Games.

Ohio Gov. John Kasich tells CNN's Jake Tapper that he found it bizarre that Donald Trump would not immediately endorse top Republicans like Sen. John McCain and House Speaker Paul Ryan.

Society, culture and peer pressure are all well known to impact your sexual behavior, but scientists are increasingly realizing that your genes are also involved.

Bitcoin owners targeted by hackers last week may lose about 36% of their money.

Almost 50 Filipino officials, including mayors and police officers, have surrendered in response to being called out by the country's president as being connected to illegal drug trade Sunday.

Brazil's Olympic team gave about a third as many samples as normally expected in the crucial month before the games began, CNN can reveal -- an "unacceptable practice" according to the world anti-doping watchdog.

See photos from Day 2 of the 2016 Summer Olympics in Rio de Janeiro.

At least 38 people have been killed by landslides in the Mexican states of Puebla and Veracruz after Tropical Storm Earl hit eastern Mexico, according to the official Twitter account of National Civil Protection Coordinator Luis Puente.

The President of the Philippines has named over 150 government officials who he says are complicit in the country's drug trade.

Investigators believe the pilot of the hot air balloon that crashed in Texas last weekend was descending through a break in clouds and didn't see the power lines that turned the craft into a fireball when he crashed into them, a source with knowledge of the investigation confirms to CNN.

Support for the only black volunteer firefighter in an upstate New York town continues to pour in after he lost his home to suspected arson within days of receiving a letter containing racial slurs.

The notorious cartel boss hid in a laundry cart the first time he broke out of prison -- or so the story goes.

Two skydivers were killed after making a tandem jump in Northern California, authorities said.

At least 15 people are dead and six are missing following heavy storms in Skopje, Macedonia, state-run media reports.

After months of being pummeled from the air and by Syrian artillery, an Islamist-led rebel coalition has made a dramatic breakthrough in relieving the siege of Aleppo, Syria's largest city. Their assault -- the first test for a new group born out of al Qaeda's Syrian affiliate -- appears to have taken the exhausted Syrian army by surprise.

Last Tuesday, a veteran supporter handed Donald Trump a Purple Heart medal. Trump's flippant response: "I always wanted to get the Purple Heart. This was much easier."

U.S. beach volleyball star Kerri Walsh Jennings speaks with CNN's Coy Wire as she seeks gold in a fourth straight Olympics.

An emotional Alex Rodriguez announces he is saying goodbye to Major League Baseball.