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Just A Bit Of DNA Helps Explain Humans' Big Brains

Scientists have found some human DNA that, when added to mice, makes their brains bigger. But as DNA research into human brains goes forward, are there ethical lines we shouldn't cross?

Humana Discloses Widening Justice Dept. Probe Of Medicare Advantage Plans

Privately run Medicare Advantage plans offer seniors an alternative to standard Medicare. The plans are paid monthly fees based on complex risk formulas that are drawing federal scrutiny.
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Listen: A Homeless D.C. Man's Attempt To Die Sparked A Passion For Running, Life

Years ago Waldon Adams was bipolar, HIV positive, living on the street and resolved to die. His turnaround was improbable, and all started with a decision to run.


Why A Court Once Ordered Kids Vaccinated Against Their Parents' Will

Measles infected hundreds of children at a Philadelphia church whose members didn't believe in modern medicine. In a rare step, health officials moved to compel the families to vaccinate the kids.

Chocolate Makeover: Nestle Dumps Artificial Colorings

Nestles says it's removing artificial flavors and dyes from its chocolate candies, and Hershey's says it's shifting to simpler ingredients. The moves come amid growing demand for natural food.

Pain Really Is All In Your Head. Emotion Controls Intensity

Humiliation, fear and unpredictability all turn up the volume on pain, research shows. And meditation can turn down pain's intensity, according to scientists who are starting to figure out why.

Hospital To Nurses: Your Injuries Are Not Our Problem

When Terry Cawthorn severely injured her back on the job, Mission Hospital refused to take responsibility — an attitude toward nurses that NPR found in hospitals across the U.S.

How Marijuana Highjacks Your Brain To Give You The Munchies

Where there's pot, there's often an insatiable hunger. Now researchers have a big clue why: Cannabinoids, the drug in marijuana, appear to flip a neural circuit that normally tells us we're full.

Pregnant And Uninsured? Don't Count On Obamacare Coverage

Women who get pregnant and don't have health insurance can't sign up outside open enrollment until after they give birth. Advocates say that puts mother and child at risk of serious health problems.

Kids' Solo Playtime Unleashes 'Free-Range' Parenting Debate

A number of parents have made news in recent months for letting children walk or play outside on their own. But laws on when kids are allowed to be by themselves are vague.