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When DNA colon cancer screening tests find abnormalities, are patients discouraged about getting more diagnostic testing because of costs they will incur? And why do hospitals sometimes send a second bill for treatments given in a doctor's office? Here are the answers.

Forget Hawaii or Fiji. The spot that's really got surfers talking these days is a secluded pond more than 100 miles from the ocean, in California's Central Valley.

"It's just an amazing, amazing wave," says Robert "Wingnut" Weaver, a longboarder from Santa Cruz, Calif., and one of just a handful of surfers who have ridden the wave. "It's mind-blowing."

When should police be able to deactivate your social media account?

The question is becoming more urgent, as people use real-time connections in the middle of critical incidents involving law enforcement.

In the case of Korryn Gaines in Baltimore County, Md., earlier this month, police said that a suspect actively using a social media connection makes a standoff worse.

Two weeks from now in Surrey, England, a coroner's inquest is scheduled for a most peculiar death.

Here are the facts: In November 2012, a 44-year-old man died while out jogging near his Surrey home. The man was reported to have been in robust health, and police declared that the death was not suspicious.

But here are a few more facts: The jogger was a Russian banker who had fled Russia after helping expose tax fraud that implicated both the Mafia and the Russian state. Traces of a rare, poisonous flowering plant were found in his stomach.

Like many schools, Gibson Elementary in St. Louis had big problems with attendance — many students were missing nearly a month of school a year.

So Melody Gunn, who was the principal at Gibson last year, set out to visit homes and figure out why kids weren't showing up. Her biggest discovery? They didn't have clean uniforms to wear to school.

Many families, she found, didn't have washing machines in the home, and kids were embarrassed to show up to school in dirty clothes. The result was that often, they didn't come.

Everywhere you turn, it seems, there's news about the human microbiome. And, more specifically, about the bacteria that live in your gut and help keep you healthy.

Those bacteria, it turns out, are hiding a big secret: their own microbiome.

A study published Monday suggests some viruses in your gut could be beneficial. And these viruses don't just hang out in your intestines naked and homeless. They live inside the bacteria that make their home in your gut.

Pastor Mark Burns, an African-American supporter of Donald Trump who has been defending the candidate's recent outreach to minority voters in the media, tweeted a cartoon Monday of Hillary Clinton in blackface, mocking her outreach to black voters.

In the cartoon, Clinton is standing at a podium holding a sign reading, "#@!* the police" and "I ain't no ways tired of pandering to African-Americans."

We know a lot about the life of Lucy, the famous fossil of Australopithecus afarensis — our ancient ancestor and bridge to the ape world.

Lucy was 3 feet tall; she lived in what is now Ethiopia and she walked upright. She ate leaves, grass and maybe nuts and seeds. She probably slept in a tree nest.

Newly released government data paint a sobering picture of safety on the nation's roads and highways.

In 2015, the number of people who died in auto accidents reached 35,092, says the National Highway Traffic Safety Administration, a 7.2% increase over 2014. The last time there was such a large single-year increase was back in 1966 when Lyndon Johnson was president.

It's a sweltering night in July and Los Angeles' Underground Museum is packed. "It's crowded and hot, but it feels really good," says vistor Jazzi McGilbert. Like much of the crowd, McGilbert is young, creative and African-American. She drove across town to this unassuming, bunkerlike storefront for an event that combines art and activism. The museum is one of her favorite spots in Los Angeles. "I like what it stands for," McGilbert says. "... And the art is incredible."

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