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Scientists say they've found evidence of a very long gravitational wave that could open a window onto supermassive black holes — and perhaps even other extreme, unseen objects in the universe.

As Russia's leader visits North Korea, Johns Hopkins professor Sergey Radchenko offers insights into the fascinating history of twists and turns in relations between Moscow and Pyongyang.

People ran around San Francisco on Tuesday looking for a chest filled with gold and local artifacts after seeing an anonymous post on Reddit with cryptic clues.

The Biden administration is quadrupling tariffs on China-made EVs. The tariffs are part of a broad swath of protectionist policies first imposed by former President Trump.

This week marked a new step in Michelle Obama's evolution as first lady. In her hometown of Chicago, she delivered one of the most emotional speeches of her career. Obama almost never ventures into the top political controversy of the day, but her role may be changing.

Killer whales off Mexico have developed coordinated hunting skills to take down whale sharks, adding to their reputation as the ocean's top predator.

Trump floated the idea during a press conference with British Prime Minister Keir Starmer as he wrapped up a state visit to the U.K. and tied it to the need for the U.S. to counter its top rival, China.

Former top CNN executive Andrew Morse has splashy plans to revive The Atlanta Journal Constitution, a local newspaper. Could it work?

Millions of people are struggling with the record high costs of renting or buying a home. That's made housing a top concern for voters.

Late night TV has seen a recent exodus of non-white stars — from Desus and Mero and Ziwe to Trevor Noah himself.