Researchers are exploring the impact of interactions with strangers and casual acquaintances. Their findings shed light on how seemingly fleeting conversations affect your happiness and well-being.

It's been 5 months since Matiullah Wesa, an activist who urged an end to Taliban bans on girls' education, was arrested. Media attention has faded. Now Angelina Jolie is making a plea in his behalf.

We asked photographers around the world to make pictures of how the locals cope with this year's record heat. They created some really cool images.

South America has seen a quarter million cases this year, as climate change is a boon for the mosquitoes that spread it. A study about how the virus infects cells could help inform future treatments.

If the guy skeeters can't hear the buzz of females ... no mating, no new generations. The results of a study on mosquito hearing could lead to a different kind of population control tool.

We interview two honorees from this summer's Women Deliver conference: a community health worker with an innovative strategy and a nurse who aims to heal the sick and bolster her profession.

A new report from NOAA and NASA confirms that last month was the hottest July ever recorded, driven to new heights by human-caused climate change.

The study assigned subjects to one of two rooms: 68 degrees or a sweat-inducing 86 degrees. They played a computer game that can bring out the worst in human nature. What are the real-world lessons?

The Brazilian family saw their income evaporate during the pandemic. They couldn't afford to stay in their home. The city of São Paulo had a solution — but they thought it was too good to be true.

Researchers have found a link between the FOXP4 gene and the occurrence of what's known as long COVID. The finding could lead to a better understanding of a condition that affects millions.

Maybe it's not a full-blown summer surge but COVID numbers are ticking up. For those with concerns due to personal risk factors or the start of the school year, the booster question is top of mind.

Kenya was hailed for its decision to outlaw single use plastic bags in 2016, with remarkably hefty penalties. So why are the bags back in stores, piling up in dumps — and being ingested by livestock?

So yes, some people in India love their lassi so much that they mix up the drink in a washing machine! Heat researcher Gulrez Azhar says it's a healthful way to cope with summer heat.

Shaimaa Ali Ahmed lost her leg at age 6 after happening upon an unexploded rocket. Children like her bear an outsized burden from the civil war, where land mines and ordnance litter the landscape.

The Bureau of Global Health, Security and Diplomacy, housed in the State Department, will plan for the next pandemic. We interviewed its director, virologist and global health leader John Nkengasong.