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Use of CT scans in the U.S. has more than tripled in less than two decades. Despite the medical benefits, these scans emit a significant amount of radiation. A new study estimates that 29,000 future cancers could be related to CT scans performed in the U.S. in 2007.

Some birds kill their siblings soon after hatching. Other birds spend their whole lives with their siblings and will even risk their lives to help each other.

Last night, former President Trump was shot during a rally in Butler, Pa. The area, north of Pittsburgh, is known for it's strong support for Trump.

NPR's Ailsa Chang speaks with Gregory Daco, chief economist at Ernst and Young and about Monday's market sell off and what that could mean for the global economy.

The measure was included in a foreign aid package providing support to Ukraine and Israel. TikTok vowed to challenge the law in federal court.

The food assistance program known as SNAP could face significant reductions if President Trump's tax and spending bill passes the House.

A humpback whale briefly engulfed a kayaker off the coast of Chile in an incident caught on camera. Experts say it couldn't have swallowed him even if it wanted to.

Intriguing video of narwhals using their tusks to mess with fish has scientists speculating about what this behavior might mean.

When octopuses and fish hunt in groups in the Red Sea, the leadership roles are more dynamic than researchers knew — as are some ways the animals enforce cooperation.

Israel has ordered tens of thousand of Gazans to move to a zone in the south.