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A new study conducted by researchers at Stanford, Harvard and the Census Bureau, finds that in 99 percent of neighborhoods in the United States, black boys earn less in adulthood than white boys who come from similar socioeconomic backgrounds. This undermines the widely-held belief that class, not race, is the most fundamental predictor of economic outcomes for children in the U.S.

As Vladimir Putin won a fourth term on Sunday, reports have surfaced of election observers being harassed and intimidated that day and in the days leading up to the vote.

Negotiators from the U.K. and the EU says they have reached a provisional agreement on how Britain will withdraw from the EU.

The agreement allows for a nearly two-year transition period, ending on Dec. 31, 2020. The U.K. is set to leave the EU in March 2019 and that transition period is designed to ease the shift.

President Trump outlined a wide-ranging plan to combat the opioid epidemic on Monday, including an ad campaign to discourage drug use, expand addiction treatment and pursue a get-tough approach to law enforcement.

"Whether you are a dealer or doctor or trafficker or a manufacturer, if you break the law and illegally peddle these deadly poisons, we will find you, we will arrest you, and we will hold you accountable," Trump told an audience in Manchester, N.H.

"Failure is not an option," he added. "Addiction is not our future."

Updated at 9:39 p.m. ET

The U.S. Supreme Court declined to take up a Republican challenge to the newly drawn Pennsylvania congressional map ahead of the 2018 elections.

The decision means Republicans have few, if any, options remaining to try to stem a map that will almost certainly result in Democrats picking up potentially three or four seats and could make half a dozen or more competitive.

Tuesday is the filing deadline for candidates for Pennsylvania's May 15 primaries.

If you want to cut your risk of catching the flu on your next flight, pick a window seat and stay put.

That's a key take-home message of a study published Monday in the Proceedings of the National Academy of Sciences.

Hillary Clinton has made her entrance into the 2018 campaign, but not by choice.

The 2016 Democratic presidential nominee's name is nowhere on the ballot this year, but that's not stopping some Republicans from using her words, her image and her gaffes to energize the GOP base.

Sherry Alvarez says she knew there was something different about her son since he was about 9 months old. Back then Sherry says his pediatrician told her there was nothing to worry about, " 'Boys are a little slower than girls, so let's just wait until his second birthday.' " We aren't using Sherry's son's name to protect his privacy.

By her son's second birthday, Sherry says she was getting desperate. She didn't know why he wasn't talking yet or showing affection like other kids. At 2 1/2, he was referred to Children's Hospital Los Angeles.

Stella Donnelly has only one EP to her name, but that's been enough to make her sharp wit come through in sweet, quiet songs that rage loudly. The Australian singer-songwriter's Thrush Metal EP was recently reissued in the U.S. with a bonus track, "Talking," which she performs here surrounded by video of wires, a weaving machine and woolen yarns.

Updated at 4:20 p.m. ET

Authorities say a fourth device that exploded in Austin, Texas, this month indicates a "serial bomber" — and one who is more sophisticated than the earlier bombs suggested.