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Before the robot can go to work, it must prove it can use its lasers to lead passengers through a busy airport. There's a challenge: "temporarily permanent obstacles." That means piles of luggage.

In a press conference in Paris, Obama said that climate change is probably the hardest kind of problem for politicians to solve, yet despite the hurdles, he's optimistic.

The alleged gunman in Friday’s shooting at a Colorado Springs Planned Parenthood appeared in court for the first time today. KRCC’s Jake Brownell...

The latest release of the Democratic presidential candidate's emails from her controversial private server total 7,825 pages, including portions of 328 documents that were upgraded to "Confidential."

Extensive flooding that drowned fields came on top of a summer of drought. Farming accounts for one out of every 10 jobs in the state. Many farmers will have the worst crop losses they've ever seen.

Mayor Rahm Emanuel said public trust in the city's police had been "shaken" and "eroded" by the shooting of a black teenager by a white police officer. Protesters had called for the chief's ouster.

Trump had said he'd be endorsed by 100 black religious leaders at a Monday press conference. Instead, there was a 2 1/2-hour meeting, with requests for apologies — and Trump gave none.

Remember P. Jay Sidney? Probably not, but Emily Nussbaum of The New Yorker unearthed the story of this actor and advocate's push to diversify the TV world 50 years ago.

Late-season gardening tips from garden gurus Lance Swigart & Lulu Volckhausen, hosted by Jill Spears

On a recent fossil-hunting trip to the island, researchers stumbled across a cache of dinosaur footprints in what was once a lagoon.