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A lock of hair, 15 years of sleuthing and a 200-year-old question. In History by a Hair, Smithsonian Institution scholar Richard Kurin follows the DNA trail back to Thomas Jefferson.

OpenAI beat humans to solving the Navier-Stokes problem, but mathematicians say the AI's solution isn't telling them much.

(Image credit: Karsten Moran/for The Washington Post)

Four states will vote on abortion-related ballot measures in November. The measures follow the Supreme Court's "Dobbs" decision, which upended federal abortion protections.

(Image credit: Bram Sable-Smith)

Alternative response programs, where mental health clinicians respond to 911 calls instead of police, have proliferated since George Floyd's murder. What does it take to do this work well?

(Image credit: Cornell Watson for NPR)

From Silent Hill: Townfall to Control Resonant to Fire Emblem: Fortune's Weave, we review the best new games to play as autumn begins, ahead of the titanic GTA6 release.

(Image credit: Konami, Remedy Entertainment, Nintendo)

The conservative House Freedom caucus grew in prominence along side President Trump, now they are considering what the future of their movement looks like.

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The past couple of weeks have been particularly challenging for Trump with a series of legal and political setbacks.

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A grand jury found Wells' cause of death "consistent with drowning," and decided not to bring indictments. The teenager was found dead on Horn Island, after he boated there with friends to celebrate Independence Day.

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A new book by the late Princess Diana's brother, Charles Spencer, has made headlines with damning allegations about King Charles III. Buckingham Palace responded with a strongly-worded statement.

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The fall equinox, which arrives Tuesday in the U.S., brings shorter days, and chances to witness alignment between Earth and the sun. It's a modern version of ancient observances of a celestial shift.

(Image credit: Bilgin S. Sasmaz)

The Federal Aviation Administration launched an ambitious $875-million-dollar push to make the U.S. airspace more efficient. But critics say it won't solve bigger problems with air traffic control.

(Image credit: Mario Tama)

Paramount's owners have made concessions to 12 Democratic state attorneys general to settle a lawsuit that endangered the media company's bid for its larger Hollywood rival, Warner Bros. Discovery.

(Image credit: Noam Galai/Getty Images for Paramount)

This week, world leaders convene for the U.N. General Assembly as war continues in Ukraine and the Gulf. And, President Trump has proposed that his arch serve as a military complex.

(Image credit: Angela Weiss)

With striking speed, the widespread debate around data centers has become a fault line in American communities, cutting across political parties and forging unexpected alliances.

German Chancellor Freidrich Merz conceded that the night spells "disaster" for the political center, but assured the public he'd push ahead with his federal agenda of tax and welfare reforms.

(Image credit: Michele Tantussi)

While many Republican candidates, even in some critical tossup races, still back President Trump's baseless claims about election integrity, some GOP voters say they are ready to move on.

(Image credit: Colin Hubbard)

The U.S. gets nearly a third of its pork from Iowa. One family is making the switch from pigs to more sustainable specialty mushrooms and trying to show other pig farmers how they did it.

(Image credit: Madeleine Charis King)

United Nations head António Guterres returns to New York for his final U.N. General Assembly as diplomacy falters over wars in Ukraine and the Middle East, and the global body faces deep divisions.

(Image credit: Zhang Fengguo)

Eighteen suspects who were arrested in the July 2021 killing of Haitian President Jovenel Moïse were being extradited to the U.S. on Sunday to face justice in Florida.

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John Boyd Jr., president of the National Black Farmers Association, says soaring diesel costs are deepening a farm crisis as farmers face sharply higher fuel costs in the middle of harvest season.

(Image credit: Paul Morigi)