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Geneticists Breach Ethical Taboo By Changing Genes Across Generations

Scientists have made changes in human DNA that can be passed down from one generation to the next. The researchers say they took the step to try to prevent women from giving birth to babies with genetic diseases. But the research is raising a host of social and moral questions.

How Does The Polio Vaccine Reach A Remote Corner Of The World?

We're right on the verge of wiping out polio globally. But to do that, children in remote regions of Pakistan and Afghanistan must be inoculated with the heat-sensitive vaccine — not once, but multiple times. Time to call in the donkeys.

The Sick Turn To Crowd Funding To Pay Medical Bills

Crowd funding isn't just for hipster artists anymore. In 2012 alone, users of the site GoFundMe have raised more than $6 million for personal medical causes.

When Fire Met Food, The Brains Of Early Humans Grew Bigger

Because we had better food, our brains grew bigger than those of our primate cousins, scientists say. Early humans cooked, which makes meat and veggies more digestible and nutrients more available to the body. Plus, there was all that chatting and chewing around the campfire.

Vet Walks On New Legs, With A Little Help From Mom

On a foot patrol in Kandahar, Nick Staback lost both of his legs after he stepped on a homemade bomb. Over the next year, his mother, Maria, became a tough coach as he learned to walk on two prosthetic legs, and together they adjusted to what she calls the "new normal" for their family.

Meningitis From Tainted Drugs Puts Patients, Doctors In Quandary

Public health officials are trying to strike a balance between alerting, diagnosing and treating patients who might be at risk of fungal infections — and not overdiagnosing and overtreating those who aren't at risk. The caution is warranted. This type of infection can smolder for weeks before exploding into meningitis or causing massive strokes.