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People are often told to walk 10,000 steps a day to be healthy. But if your goal is to avoid being crippled by knee arthritis, just 6,000 a day will do it, a study finds. And 3,000 is a good start.

Actor Mary-Louise Parker has written a memoir, Dear Mr. You, in the form of letters to important men in her life — among them her beloved father and the accountant who had to tell her she was broke.

Tight-laced Gloria Harkness says she's no Miss Marple, but she can't help picking at the threads of a murder mystery. Especially when it involves the care at the home where her disabled son lives.

The Armslist website, and others like it, are coming under increased scrutiny by law enforcement, gun control advocates and researchers as debate over access to these kinds of weapons heats up.

Foraging bumblebees can pick up nearly half their weight in pollen before heading home to the hive, research shows. All that weight tucked into hollows on their hind legs can complicate flying.

Iranian Prime Minister Hassan Rouhani tweeted that Iran and six world powers, including the United States, had reached an agreement on "key parameters" of the issue.

The tennis player won first Olympic gold medal in Puerto Rico's history — and underlined the political tensions in its nebulous status as neither a sovereign nation or an American state.

Local Film Showcase features San Diego filmmakers, locations, and actors; Awards celebration hosted by comedian Jamie Kaler; Presented by KPBS in partnership with the GI Film Group and Film Consortium

The National Institutes of Health has promised to put more money into research on an illness that many people feel has been dissed by the medical establishment.

Hear a mix of the month's best electronic tunes, including new music from Robert Hood, Seven Davis Jr, Malory and more.