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Alex Honnold has scaled the sheer face of Half Dome in Yosemite, Calif., without the aid of ropes — and entirely alone. Still, he says his big break didn't arrive until a TV producer approached him.

A mouse's brain clears out toxins during periods of deep sleep — including toxins that form the sticky plaques associated with Alzheimer's disease. Could the same hold true for people?

The First Folio is the first printed collection of all of Shakespeare's plays, assembled by two of his buddies after he died. Without it, plays like Macbeth and Twelfth Night might not have survived.

The self-described militiamen occupying buildings at a national wildlife refuge accuse the federal government of overreaching its authority and say they'll remain in their new base for years.

Also: The San Bernardino mass shooting site reopens today; armed protesters continue to hole up in a federal building in Oregon; and a robbery suspect is caught after taking a selfie with the victim.

Announcing the move Monday, Bahrain said it is responding to "sinful cowardly attacks" on Saudi Arabia's embassy and a consulate in Iran.

Music from Carl Solomon, Jenny & Tyler, Marienne Kreitlow, Ken Dunn, John McCutcheon, Matt Blake, The Ukulele Orchestra Of Great Britain, Christine…

With the discoveries now confirmed, "The 7th period of the periodic table of elements is complete," according to the International Union of Pure and Applied Chemistry.

Founded in 1991 as a temporary shelter for Somalis, the Dadaab complex in Kenya now houses nearly half a million refugees. Ben Rawlence profiles nine of its residents in his new book, City of Thorns.

Service dogs help veterans with physical disabilities, and there's increased interest in using dogs for symptoms of post-traumatic stress disorder, too. A study is underway to see whether that helps.