The solution to too much sitting is simple but hard to stick with. This walking challenge sets you up for success, with six tips to keep you moving throughout your day.

Young, infected Lasius neglectus ants will send out an altruistic "kill me" signal to worker ants, a new study finds, as part of a strategy to keep deadly pathogens from spreading through the colony.

Crude prices are low. Companies are being cautious. But huge reserves — particularly of the heavy, viscous oil Venezuela has in abundance — remain appealing.

Misinformation spread quickly after the wildfires in Los Angeles last year. Some of these false narratives on social media impacted California policy.

While serendipity has often been associated with luck or happy accidents, its origin suggests that it goes beyond just happenstance.

The swift policy and political repercussions the video helped propel illustrate the symbiotic relationship between online content creators and the Trump administration's policy goals.

Hundreds of thousands of Venezuelans have been in limbo since the Trump administration removed their temporary protected status late last year. That uncertainty has intensified as U.S. immigration officials again push for those migrants to return to Venezuela.

New federal guidance is expanding testing for cervical cancer with a self-collection method. Dr. Mara Gordon speaks to NPR about why this option might become popular for screening for HPV.

CIA turncoat Aldrich Ames, who betrayed Western intelligence assets to the Soviet Union and Russia in one of the most damaging breaches in U.S. history, has died in a Maryland prison. He was 84.

A golden phone that President Donald Trump's family business promised to release last year remains mysteriously under wraps as the technology industry serves up a glut of new gadgets at CES in Las Vegas this week.