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For infants, toddlers, and children, one sign of an especially close relationship is if two people do something that involves exchanging saliva, like taking bites from the same piece of food.

Democrat Gary Chambers Jr. is running to unseat Louisiana Sen. John Kennedy. Chambers follows in the footsteps of other politicians who have used attention-grabbing ads to up their name recognition.

NPR's Ari Shapiro speaks with Dr. Saad Omer about the effectiveness of travel bans now that the omicron variant has been discovered in the United States.

The American biotech company has announced its experimental COVID-19 vaccine is 94.5% effective. Operation Warp Speed science adviser Dr. Moncef Slaoui, says he was ecstatic when he heard the news.

Researchers who detected environmental DNA, or eDNA, in two zoos say the technique could one day be used to look for endangered species in remote locations in the wild.

How a sexual assault survivor is questioned by police can greatly influence the ability to access memories of that traumatic incident. Better interview techniques might help solve more cases.

A year into the pandemic, the agency's staffers reflect on what it's been like to fight the biggest public health battle in their history and how they're working to rebuild public trust in science.

In Indonesia, Secretary of State Antony Blinken outlined how the U.S. plans to deepen its economic engagement in Southeast Asia. The U.S. has focused more on security in the region up to this point.

Sian Proctor, who lifted off this month with three crewmates on the first all-civilian space launch, tells NPR that she "couldn't get enough" of the view from orbit.

The World Health Organization is setting up a new committee to investigate the origins of the current pandemic and potential outbreaks in the future.