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The string of genes that make a man a man used to be much bigger, and some geneticists say it may be wasting away. Back off, others say. Y has been stable — and crucial — for millennia.

By age 40, the brains of people with Down syndrome start to resemble those of Alzheimer's patients. Scientists hope to speed up Alzheimer's drug development by studying people with Down syndrome.

Jennifer Doudna used to worry that her science wasn't doing anything important. Then some basic research led her team to a discovery that could one day be crucial in healing some genetic diseases.

Bryan Shaw showed it was possible to detect early signs of eye cancer from a family photo album. Now, he and his research team have made an iPhone app.

The Ormia ochraceafly has sophisticated little ears — it can locate crickets by calculating their chirps. Those super-ears are inspiring the next generation of microphones for human hearing aids.

I feel no shame when I say I'm a recovering addict. The battle has made me a warrior. As someone lucky to have survived, I want to tell others not to give up.

Roughly 1 in 5 unvaccinated people had the flu between 2006 and 2011, but only a quarter of them had symptoms, a study found. That could affect how the virus spreads.

It's not about making designer beer. Johns Hopkins scientists and undergrads stitched together strands of yeast DNA as a step in exploring the essential genetics of various species: What makes us us?

Nicole Smith-Holt’s son Alec was 23 when he started feeling sick. His muscles cramped. He was lethargic. He woke up multiple times every night to use the…

The pot brownie you bought to help your sleeping disorder may have a lot less active ingredient than promised, a study finds. And a review of other studies finds scant evidence of medical benefits.