A Baltimore homicide detective was fatally shot in the head with his own gun after a struggle with his killer last week, the city's police commissioner said Wednesday.

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Artificial lighting at night is contributing to an alarming increase in light pollution, both in amount and in brightness, affecting places all over the world, a new study has found.

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US fighter jet pilots train every day over South Korea for a potential conflict with the North. CNN's Alexandra Field took a ride in an F-16 to see how they prepare to battle in the air.

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Speaking to five branches of the military serving overseas via satellite from Mar-a-Lago, President Donald Trump highlighted how the US military is "really winning" since he took office.

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President Trump and first lady Melania Trump visit a US Coast Guard station in Riviera Beach, Florida.

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Tens of thousands of names were removed from the national criminal background check database this year after the FBI narrowed its interpretation of who is a "fugitive from justice," according to an administration official.

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Before 6 a.m. ET, Donald Trump had already sent two tweets about the self-proclaimed "big baller" LaVar Ball.

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A former director of the US Office of Government Ethics says he filed an official complaint against White House counselor Kellyanne Conway for what he argues was a violation of the Hatch Act after she attacked GOP Alabama Senate hopeful Roy Moore's opponent on television Tuesday.

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The androgynous boy who fans adored was at first giddy about fame, but it soon became a nightmare, too much for a young person to handle on his own, writes Ann Moses.

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It was a once-in-a-decade display of American firepower.

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Former gymnast Rachael Denhollander, the first woman to publicly accuse Larry Nassar of sexual assault, says a Michigan State University official mocked her report of sexual abuse. The university has said that "any suggestion that the university covered up this conduct is simply false."

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Two-year-old AJ Burgess received a new kidney Wednesday after a prolonged battle with hospital officials who postponed his original October surgery when his father, a perfect donor match, violated his parole and was arrested.

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