Over the past few decades, psychologists have begun to understand how parents across many cultures teach their children to build deep, fulfilling relationships with their siblings.

Thousands of years ago, there was a ceremony to bind close friends together as sworn siblings. Could the practice be resurrected today to strengthen modern friendships? Two women did just that.

Bread — and the lack thereof — plays a role in many corners of the world facing a crisis, from Israel and Gaza to Ukraine to Afghanistan to Sudan.

The modern study of starvation was sparked by the liberation of concentration camp survivors. U.S. and British soldiers rushed to feed them — and yet they sometimes perished.

The grass pea is one: a hardy crop that can thrive in a drought. An agriculturist is spearheading an effort to diversify what farmers grow as climate change threatens staples like corn and wheat.

We asked folks whose job it is to make the world a better place: How do you find the inner strength to keep plugging away in tough times? And what advice do you have for fledgling activists?

The Biden administration has launched a new effort to improve the ability of the U.S. to prevent, detect and respond to global health threats. Some experts say the new strategy doesn't go far enough.

Pioneering disease investigator and beloved global health mentor Joel Breman died on April 6 at the age of 87. Breman was part of the team that investigated the first known Ebola outbreak in 1976.

Doctors have coined a term to describe places where blood for transfusions is not readily available: "blood deserts." When blood banks aren't around, they try different strategies to help patients.

Illegal gold mining has ravaged the Peruvian Amazon, leaving behind pollution and denuded landscapes. A group of miners are working with a U.S. charity to restore the forest.

In "Texas Hold 'Em," the singer is accompanied by a banjo. It's often thought of as a quintessential Americana instrument. But the history of the banjo tells a different story.

Cattle are getting sick with H5N1, and one person got sick in Texas. How bad could this be for dairy farms? Could it spread among people? Here's what scientists are learning.

That's the finding of a new study in Bangladesh, which gave reading glasses to hundreds of people and then measured their earnings.

Anthropocene refers to the age of humans — the things we've done to Earth. Geologists just rejected a proposal to declare an official "Anthropocene epoch." But everyone agrees: Damage has been done.

With a dramatic jump in cases — and a strain of mpox that is deadlier than the virus that went global in 2022 — specialists are scrambling to reign it in.