The last person known to have seen a Navajo elder alive has been arrested in an unrelated incident, raising questions about whether he will be sent back to federal prison

The family of Nolan Wells has hired audio engineers to review a distress call made from a boat on the day of his disappearance

First responders have given jurors firsthand accounts of what they found after Massachusetts mother Lindsay Clancy killed her three children and tried to take her own life

Authorities say cyberattacks targeted over 30 water systems in Minnesota earlier this week

Two new studies reveal climate change's fingerprints over extreme fire weather-triggering infernos in Spain and France

Federal investigators report that a commuter plane crash off Alaska last year, which killed all 10 people on board, involved an operator with a history of overweight flights

The U.S. Department of Energy is harnessing the artificial intelligence boom in its bid to convert another Cold War-era uranium enrichment site

Experts are worried about tanning's resurgence among young adults, fueled by social media

A National Guard officer has pleaded guilty to leading a double life, marrying a woman he met in Mongolia while still married in the U.S. Prosecutors allege Maj. Collin Welch used a government travel card and forged documents to facilitate his actions