Jon Hamilton

Jon Hamilton is a correspondent for NPR's Science Desk. Currently he focuses on neuroscience and health risks.

In 2014, Hamilton went to Liberia as part of the NPR team that covered Ebola. The team received a Peabody Award for its coverage.

Following the 2011 earthquake and tsunami in Japan, Hamilton was part of NPR's team of science reporters and editors who went to Japan to cover the crisis at the Fukushima Dai-ichi nuclear power plant.

Hamilton contributed several pieces to the Science Desk series "The Human Edge," which looked at what makes people the most versatile and powerful species on Earth. His reporting explained how humans use stories, how the highly evolved human brain is made from primitive parts, and what autism reveals about humans' social brains.

In 2009, Hamilton received the Michael E. DeBakey Journalism Award for his piece on the neuroscience behind treating autism.

Before joining NPR in 1998, Hamilton was a media fellow with the Henry J. Kaiser Family Foundation studying health policy issues. He reported on states that have improved their Medicaid programs for the poor by enrolling beneficiaries in private HMOs.

From 1995-1997, Hamilton wrote on health and medical topics as a freelance writer, after having been a medical reporter for both The Commercial Appeal and Physician's Weekly.

Hamilton graduated with honors from Oberlin College in Ohio with a Bachelor of Arts in English. As a student, he was the editor of the Oberlin Review student newspaper. He earned his master's degree in journalism from Columbia University, where he graduated with honors. During his time at Columbia, Hamilton was awarded the Baker Prize for magazine writing and earned a Sherwood traveling fellowship.

Alzheimer's disease begins altering the brain long before it affects memory and thinking.

So scientists are developing a range of tests to detect these changes in the brain, which include an increase in toxic proteins, inflammation and damage to the connections between brain cells.

Spinal surgery made it possible for Liv Cannon to plant her first vegetable garden.

"It's a lot of bending over and lifting the wheelbarrow and putting stakes in the ground," the 26-year-old says as she surveys the tomatillos, cherry tomatoes and eggplants growing in raised beds behind her house in Austin, Texas. "And none of that I could ever do before."

For the first 24 years of her life, Cannon's activities were limited by chronic pain and muscle weakness.

What sounds like music to us may just be noise to a macaque monkey.

That's because a monkey's brain appears to lack critical circuits that are highly sensitive to a sound's pitch, a team reported Monday in the journal Nature Neuroscience.

The finding suggests that humans may have developed brain areas that are sensitive to pitch and tone in order to process the sounds associated with speech and music.

When Sterling Witt was a teenager in Missouri, he was diagnosed with scoliosis. Before long, the curvature of his spine started causing chronic pain.

It was "this low-grade kind of menacing pain that ran through my spine and mostly my lower back and my upper right shoulder blade and then even into my neck a little bit," Witt says.

The pain was bad. But the feeling of helplessness it produced in him was even worse.

"I felt like I was being attacked by this invisible enemy," Witt says. "It was nothing that I asked for, and I didn't even know how to battle it."

Scientists are setting a new course in their quest to treat Alzheimer's disease.

The shift comes out of necessity. A series of expensive failures with experimental drugs aimed at a toxic protein called amyloid-beta have led to a change in approach.

Scientists have found a way to transform brain signals into spoken words and sentences.

The approach could someday help people who have lost the ability to speak or gesture, a team from the University of California, San Francisco reported Wednesday in the journal Nature.

When you're thirsty, a swig of fresh water brings instant relief. But gulp down some salty sea water and you'll still feel parched.

That's because your brain is trying to keep the concentration of salt in your body within a very narrow range, says Zachary Knight, an associate professor in physiology at the University of California, San Francisco and an investigator with the Howard Hughes Medical Institute.

In the U.S., older people with dementia are usually told they have Alzheimer's disease.

But a range of other brain diseases can also impair thinking and memory and judgment, according to scientists attending a summit on dementias held Thursday and Friday at the National Institutes of Health.

These include strokes, a form of Parkinson's disease and a disease that damages brain areas that regulate emotion and behavior.

Primary care doctors are really good at checking seniors' cholesterol levels and blood pressure but often fail to use tests that could detect dementia.

Fewer than half of primary care doctors surveyed say they routinely test patients 65 and older for problems with memory and thinking, according to a report released Tuesday by the Alzheimer's Association.

The Food and Drug Administration is expected to approve a new type of drug for depression. It is esketamine, a chemical cousin of the anesthetic and party drug ketamine.

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