We all know ancestors give us our hair color, but the roots of gray hair have been less clear. Is it genetics, or stress? Marie Antoinette supposedly went completely white the night before they lopped off her head. And our presidents seem to go gray much...

You've said we need to become a space-faring species because humans face so many survival threats on Earth. What worries you most? Probably an asteroid impact. That's a very low probability, but it could wipe out everyone. Although if you have a full-blown nuclear exchange between...

The annual tradition of paying tribute to black history in the United States began in the second week of February 1926 in Washington, D.C. Canada, Germany and the United Kingdom also hold their own commemorations. Here’s how it all started. — Corbis See the slideshow at...

Health care is 17.5 percent of the gross domestic product. Think about that for a second: For every dollar spent in the U.S., about 18 pennies go to health care. One idea to curb the actual cost of health care is the Accountable Care Organizations,...

Health insurer UnitedHealthcare will partner with a local doctor’s group in a move they say will lower health care costs. The move could affect more than 20,000 people in central Florida. Accountable Care Organizations, or ACOs, were created by the Affordable Care Act, and the idea...

The severe birth defects in babies born to women suspected of having the Zika virus have received most of the attention about this disease in the news, but the virus also poses a risk to older adults. Thomas Frieden, director of the U.S. Centers for Disease...

When Sue Green drove off the lot in her new 2013 Hyundai Elantra, she was just glad to be out of her old high-mileage SUV; amenities like hands-free phone service and a touch-screen navigation system didn't really rev her up. "But now when I get into...

The odds of getting Alzheimer's disease or other forms of dementia are declining for people who are more educated and avoiding heart disease, a study finds. The results suggest that people may have some control over their risk of dementia as they age. This isn't the...

Fifty years ago, on July 30, 1965, President Lyndon B. Johnson signed Medicare — and its sister program Medicaid — into law in the presence of former President Harry Truman in Independence, Mo. Eleven months later, both programs went into effect, with Truman and his...

Allergy shots can still benefit seniors with allergies, a new study suggests. The study included 60 people with hay fever between the ages of 65 and 75 who were given either allergy shots or a placebo for three years. Those who received the allergy shots had a...