The surprising new idea that is reshaping how we think about ADHD

 (Timo Lenzen for The Post)

Scientists are starting to uncover the links between being a night owl and some neuropsychiatric conditions.

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El Niño has reached record strength. See where extreme weather may unfold.

Army report cites systemic flaws that led to fatal DCA midair collision

At 81, he’s the most-cited nutrition expert. Here’s what he eats in a day.

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Trump says ‘we protect our cities’ after suggesting Iran could ‘take out’ L.A. or San Diego

We reviewed $1.6 billion of campaign ads. Here are the takeaways.

A year into Trump’s peace plan, Netanyahu stands in the way of rebuilding

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Sens. Merkley and Daines: Our bipartisan plan would reform the U.S. Senate

Let my ex keep our dog in the breakup? Give advice to this Hax question.