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There's growing evidence that a lack of deep sleep increases the risk of Alzheimer's disease. Scientists say that's because during deep sleep, the brain removes toxins associated with Alzheimer's.

President Biden meets House Speaker Kevin McCarthy and other congressional leaders as the deadline for lifting the debt limit draws ever closer.

The security forces' action came after authorities demanded that Khan hand over dozens of protesters believed to have been among those who smashed and set fire to army installations last week.

NPR's Mary Louise Kelly talks with Georgetown University professor and former prosecutor Paul Butler about the historic federal charges against former President Donald Trump over classified documents.

Retired U.S. Navy submarine Capt. David Marquet says crews would need to locate the vessel then bring it to the surface to unlatch it. He puts the odds of passengers' survival at "about 1%."

The events of the past two days raise many questions about the future of Vladimir Putin's Presidency and many are asking how he will recover from this most public of challenges to his leadership.

Washington is preparing for a showdown over the debt ceiling. But what would actually happen if it isn't raised?

The law could have big implications for the Kremlin's war plans in Ukraine, especially as it tries to recruit thousands more troops in anticipation of a Ukrainian counteroffensive.

A shooting attack killed two Israeli women in the West Bank. But otherwise there seem to be efforts to limit an escalation.

A former FBI lawyer is preparing to plead guilty to a false statement charge in an investigation into how the Obama administration looked into Russian interference in the 2016 presidential election.