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Los Angeles and smog have been synonymous for decades. But the last smog alert happened in 2003, and lead has virtually disappeared from the air.

The United States and Iran failed to reach an agreement after a day of highly anticipated face-to-face peace talks, Washington's lead negotiator Vice President J.D. Vance announced on Sunday.

The Utah Climate Center's Bradley Vernon predicts warm temperatures today and tomorrow, and stormy weather throughout next week.

Jani Radebaugh, a planetary scientist at Brigham Young University, has spent her career studying the landscapes of other worlds — and for decades, that work has depended on images and data sent back by robotic missions. Now, as humans re-enter deep space, she’s asking a different question: What changes when we see these worlds with our own eyes?

The four astronauts aboard NASA's Artemis II mission splashed down on Earth, after a successful visit to the moon.

"Undertone" has some moments of brilliance, and it offers a lot of commentary on the growing isolation happening in collective youth culture.

In other news, St. George ranked eighth for fastest-growing metros in the country, according to census data. And, restoration is underway for 27,000 acres burned by the Monroe Canyon Fire last year.

President Trump made a dramatic shift on Iran this week as critics within his own party pushed back on the war.

NPR's Mary Louise Kelly speaks with Sir Ian McKellen about playing a sour painter in The Christophers and why the 86-year-old actor hopes to never retire.

Vice President JD Vance faces a key moment in his career as he heads to Islamabad to negotiate the end of the U.S.-Israeli-led war in Iran.