Retired NASA astronaut Cady Coleman talks the Artemis II rocket ahead of its February launch.

The European Union and the Mercosur bloc of South American countries formally signed a long-sought landmark free trade agreement on Saturday. CNN's Dario Klein reports, this marks a major geopolitical victory for the EU in an age of American tariffs…

U.S. President Donald Trump called for new leadership in Iran following comments from Iran's Supreme Leader, Ayatollah Ali Khamenei, calling Trump a "criminal" over Trump's support for recent anti-government protests in the country. CNN's Ben Wedeman has the latest.

New video from Minnesota shows a U.S. federal agent allegedly kneeing a detained man in the face.

President Trump said the United States will impose new tariffs on several European countries unless a deal is reached for the US to purchase Greenland. In Denmark, thousands turned out in the cities of Copenhagen, Aarhus, Aalborg and Odense to…

Crowds marched in Greenland's capital, Nuuk, Saturday sending a message that their country is not for sale as US President Donald Trump pushes for a deal. CNN's Nic Robertson reports.

A viral Facebook video shows the moment orca whales swam up to a man sunbathing on a pontoon boat in New Zealand.

What NASA is saying about the Artemis II moon mission launch.

Pop culture experts talk about the 2016 social media trend and why it's popular.

Video shared with CNN by US-based rescue team Grey Bull shows the dramatic escape of Venezuelan opposition leader María Corina Machado. Machado earlier on Friday declined to comment on the extraction.

Three young Andean condors were released into Patagonia National Park as part of the Manku Project, a conservation effort led by the Rewilding Chile Foundation. After months of rehabilitation and acclimatization, the birds are now back in the wild and…

As an American carrier strike group heads to the Middle East, Pres. Trump faces a decision on whether to take military action in Iran. "In Donald Trump's narrative, he threatened them, they backed down, crisis over," says Fareed Zakaria, anchor…

Ukraine says a delegation is traveling to the U.S. for talks on a U.S.-drafted plan to end the war as Russia targets Ukraine's energy infrastructure. The Kyiv Independent's Jared Goyotte joins CNN to discuss the situation for Ukrainians.

Becky Anderson spoke with a climate leader about the mission of UAE-based nonprofit Frontier25 and its strategies to help build a green economy.

Negah Angha, Visiting Fellow at King's College London, assesses what's ahead for Iran.

Venezuelan opposition leader Maria Machado has bestowed upon President Trump her Nobel Peace Prize medal. Experts, however, raise concerns that she may have left a key meeting without any guarantees from the president.

CNN's Elex Michaelson explains how Zoe Saldaña has become the highest-grossing actor of all-time.

CNN's Kaitlan Collins joins The Lead.

Iranian-Canadian journalist & filmmaker Maziar Bahari joins CNN to talkabout the Iran protests.

CNN's Hadas Gold has more on the change and what led up to it.

Strong winds collapsed war-torn buildings over makeshift camps in Gaza, killing at least 8 Palestinians this week, according to the Palestinian Ministry of Health. Half of the dead are infants who died of hypothermia, in the absence of warm clothes.…