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The marble caves along General Carrera Lake in Patagonia, Chile, are over 6,000 years old. The smooth intricate shapes inside of the caves are the result of lake currents that have carved through the rock over the millennia. Join us as we tour the incredible, natural beauty of this breathtaking part of southern Chile.

Fox reached a $20-million settlement with former anchor Gretchen Carlson, yet Roger Ailes still has Republican presidential candidate Donald Trump's ear. CNN's Brian Todd reports.

A 5-year-old boy on his way to class abruptly stopped to recite the Pledge of Allegiance, and a photo of the act has gone viral.

After a photo of two newborn twins hugging went viral, their parents are using it to raise awareness of the rare birth defect that claimed the life of one of the boys.

Sapelo Island is being saved by a small pea. Victor Blackwell reports.

Student Kristin Smart went missing on May 25, 1996, and was declared dead in 2002. Now authorities say they may have gotten a break in this very cold case and have begun excavating on Cal Poly's campus.

Presidential candidates Hillary Clinton and Donald Trump answered questions in front of a crowd of veterans.

US President Barack Obama pushes for Trans-Pacific Partnership during a news conference following the ASEAN summit in Laos.

At an NBC town hall, Donald Trump stood by a 2013 tweet that implied military sexual assault is a result of women serving in the military.

In response to a question about Donald Trump, President Obama told reporters that he does not believe Trump is qualified to be president and "every time he speaks, that opinion is confirmed."

Top diplomats of the US and Russia will meet in Geneva, Switzerland to work on a ceasefire deal, as CNN's Nic Robertson reports.

Chemical attacks injure dozens of civilians in Syria, as diplomats scramble for a solution. CNN's Hala Gorani reports.

Former Secretary of State Colin Powell told Hillary Clinton that he used his own personal computer to communicate with friends and foreign leaders and sent emails without going through the State Department server, according to emails released by congressional Democrats.

President Barack Obama reaffirms Hague ruling on South China Sea. CNN's Andrew Stevens reports.

Magician Steve Valentine offers insider tips on the art of illusion. The latest episode of CNN's "In 24 Hours" travel series visits Los Angeles

In a new Vanity Fair article, American musician Bruce Springsteen reveals he's battling depression. CNN's Zain Asher has more.

Four police officers in Oakland, California, have been fired for involvement in a department-wide sex scandal, Mayor Libby Schaaf said in a press conference.

Hillary Clinton and Donald Trump clashed over national security issues that exposed deep divides about how to manage the military and conduct foreign policy in an increasingly complex world.

The "ghost snake" is a new snake recently discovered in Madagascar. It's part of the snake group called cat-eyed snakes.

EcoHelmet is an easily portable helmet made of coated paper that was designed to address the issue of how to make helmets more accessible to bike-share users. The design was chosen as the U.S. national winner of the 2016 James Dyson Award.