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SAN FRANCISCO — California police officer Robert Davies was arrested after pursing someone police say he believed was a teenage girl on social media.A 20-year-old college student whose name is not public says he used a Snapchat filter to pose as a teen girl and take down a sexual predator. He said he did so because he has a friend who was the victim of a sex crime as a child, and he wanted to help identify possible pedophiles.The student said he was "just looking to get someone" to nab, and it was allegedly Davies who messaged him once the photo of him as a female was downloaded from Snapchat and uploaded to various social media platforms, including Tinder and the messaging app Kik. 703

Saturn's rings make it one of the most striking planets in the solar system, but scientists believe they could disappear in less than a 100 million years -- which isn't all that long when you consider that the gas giant itself is more than 4 billion years old. 272

Some Michigan doctors are warning people that over-the-counter cold medicines can cause a severe form of glaucoma.Anticholinergic drugs, such as certain cold and flu medicines, can cause 199

SCOTTSDALE, Ariz. — What started as a regular day at an Arizona grocery store has led to a life-long friendship. “We saw him just holding this bill and just kind of wandering around," Stephanie Blackbird said. "He didn’t look well ... He looked lost and I couldn’t walk away, I couldn’t in good conscience walk away without at least checking on this man.”Blackbird, and her husband, met Alan Vandevander at a Whole Foods in Scottsdale, Arizona. They helped him get some food, started up a conversation, then parted ways. But the Blackbirds couldn't get the frail homeless man off their minds. They reconnected with him the next morning and helped him get to a hospital. Vandevander was severely malnourished. “He said, 'I’m glad they found me cause I was in trouble,' ” Blackbird said . After getting to know him, the Blackbirds did some digging and found out Vandevander has quite the story. He served in Vietnam and was awarded a Purple Heart, but he had also been missing for 40 years. His family in Indiana had no idea Vandevander was still alive.“I started looking for him in 1990 and I kept coming across dead ends," said Vandevander's sister, Julie Vandevander. She says she last spoke to her brother in the 80s. “I never ever thought I would hear from my brother again.”The two spoke on the phone just before Christmas for the first time in almost four decades. The Blackbirds have spent the last several weeks helping the man find the care he needs, taking him to hospitals and now the VA. Vandevander's sister hopes to fly to Arizona later this month to reunite with her brother. 1610

Samantha Josephson, a 21-year-old University of South Carolina student who went missing overnight, has been found dead, according to school officials.Josephson was last seen by friends between 1:30 a.m. and 2 a.m. Saturday, the City of Columbia Police Department said in a tweet when they were trying to locate the young woman. Police also said the 21-year-old was seen getting into a newer model Chevy Impala shortly after 2 a.m.School officials 459