A single neuron in the brain may deliver enough information to control a muscle. These results could eventually help bypass the spinal cord, allowing paralyzed people to control their own muscles.

The discovery of human embryonic stem cells seemed to offer cures for horrific diseases. After 10 years of research, was that hype? Where are the cures from stem cells?

Are you undecided about the presidential race? A new test shows that it ain’t necessarily so. You may have made your decision — but don’t yet know it.

Activity is not just for the heart: For older people, it spells longevity, mobility, independence. Exercise fights diabetes and MS; even extends the lifespan. Time to get moving?

Skin cancer is rising faster than the price of oil (almost). How can you identify skin cancer? How can you protect yourself? Is ozone loss one of the causes? Does sunscreen prevent melanoma?

Brain electrodes allow monkeys to move robot arm and feed themselves. Experiment proves it’s possible to bypass spinal cord to create simple motion.

After decades of effort, gene replacement brings eyesight to the blind. How did it work? What does animal research say about gene therapy for curing cancer, reducing pain or reversing muscular dystrophy? Why has gene therapy taken so long?

After World War II, the “green revolution” sparked an explosion in farm output in developing countries. With soaring food prices and spreading food riots, what can we learn from the green revolution?

Financial traders make more money when their blood has more testosterone. Is this another arena where the male hormone leads to success, or could success raise the hormone level?

As pathogenic bacteria advance, scientists are desperately scrounging around for new ways to fight them. But would you believe healing clay, gator blood, honey and crushed leaves?