Giving a kidney to a stranger? Researchers call it 'extraordinary altruism' Only about 300 to 400 people a year give a kidney to someone they never met. It's an act of generosity so unusual, a neuroscientist studies the people who do this. Stephanie O'Neill
Photos: Fishermen, known as 'Sea Nomads,' dive to protect ocean life in Madagascar They make their living off the sea, but their catch is dwindling. So these traditional fisherfolk are taking steps to preserve both sea life — and their livelihood. Julie Bourdin
Feeling stuffed after a big holiday meal? Try taking a walk During the holidays, you may want to roll from the table to the TV. Research shows even a short walk after a meal can be a big boost for health. Maria Godoy
When kindness becomes a habit, it improves our health Whether it's volunteering at a local school or taking soup to a sick neighbor, research shows that when we help others, we can also improve our own physical and mental health. Maria Godoy
For young adults, caregiving isn't just hard. It can shape you for life Caregiving responsibilities can cut young people off from peers and interrupt their emerging life story. And there's been little research or support directed at this group. That's starting to change. Kat McGowan
'May love rest gently in your broken heart': What to say to a grieving friend When a good friend's loved one passes away, it can be hard to find the right thing to say. NPR readers share words of comfort they've shared with others — or wish they'd heard themselves. Malaka Gharib
How prior insurance authorization affects physicians and the care they give patients NPR's Michel Martin speaks with American Medical Association President Bruce Scott about how physicians and patients are burdened by insurance companies' systems of prior authorization. Michel Martin
I discovered one way to fight loneliness: The Germans call it a Stammtisch Modern life can be lonely. Some are looking to an old German tradition – of drinking and conversation – to deepen connection through regular meetups. Laurel Wamsley
FDA approves weight loss drug Zepbound to treat obstructive sleep apnea The FDA said studies have shown that by aiding weight loss, Zepbound improves sleep apnea symptoms in some patients. Juliana Kim
The FDA restricts a psychoactive mushroom used in some edibles The Food and Drug Administration has told food manufacturers the psychoactive mushroom Amanita muscaria isn't authorized for food, including edibles, because it doesn't meet safety standards. Will Stone