Just saying "hello" to a passerby can be a boon for both of you. That's what researchers are finding in studies we covered in our "Living Better" series. We asked readers to offer their own testimony.

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.

Omicron is still spreading and it's crazy contagious. Experts share seven steps to deal with an infection, protect your household from getting sick and stay sane in the process.

What could the world achieve this year if we had a limitless budget and full support from global leaders? Our audience shares their heartfelt ideas.

It's been two long years of COVID gloom. But NPR's readers didn't let it keep them down. From cicada tracking to open-water swimming to roller-skating squads, you share how you bring the fun.

This year's best pictures include two friends sunbathing on giant shards of ice in Kazakhstan, workers at a red chili factory in Bangladesh and a white mangrove forest in Vietnam.

If you're trying to rev up your pandemic fitness routine, maybe it's time to mix things up with some free weights — or soup cans — and get your muscles pumping.

In a previous "Coronavirus FAQ," we looked at the medical, practical — and ethical — implications of lying to get a booster or a shot for a kid under 12. And we asked you to share your views.

Here are 3 letters from our reader callout: one to a hesitant dad, one to thank a dad who got his jab after many cancellations and one to all vaccine-hesitant folks after an uncle died from COVID.

Sweat is an "evolutionary marvel," says Sarah Everts, the author of The Joy of Sweat. In her new book, Everts delves into the science of perspiration and how this trait has enabled humans to thrive.

With much of the U.S. already sweltering this summer, even avid runners, hikers and bikers are wilting. We've got 10 strategies from experts on how to enjoy hot weather exercise without keeling over.

We asked NPR readers to share photos of the objects they can't live without during the pandemic. Their responses are funny, surprising — and some might make you tear up.

The winning images in the All About Photos contest answer the question: What's in "Your Mind's Eye"? And also: What can you carry on your head?

From the first vaccine (for smallpox) the questions have been the same. How do we transport it? Who's next to get it? Why so much hesitancy? The answers can be similar — or dramatically different.

Psychological first aid is part of the mission of Doctors Without Borders. They hope to give those fleeing the horrors of civil unrest the tools to start moving past their trauma.

The report states that the coronavirus most likely did not originate at the wet market in Wuhan and that a lab leak was "an extremely unlikely pathway."

Dr. Paul Spiegel talks about the gaps — and raises the possibility that the coronavirus pandemic could lead to huge changes in humanitarian responses.

Dr. Miuel Nicolelis, a Duke University neuroscientist originally from Brazil, has been in Sao Paulo for the past year caring for his mother. He says it's like a war zone.

It's the first country to receive free vaccines from the COVAX program. But that shipment of 600,000 can't protect a nation of 30 million. And conspiracy theories about the vaccine are swirling.

There have been 74,155 fires in Brazil so far this year, mostly in the Amazon, and about half of which have ignited in just the past month. Some world leaders are raising the alarm.