Growth of cells in inner ear may boost sound sensitivity, researchers say

Benefit was seen only with enzyme present, but study isn't definitive

In research into longevity, they found her white blood cells had many seemingly harmless mutations

Studies looked at improvements in ER, specially equipped ambulance that could deliver clot-busting drug

More research is needed to understand the link, experts say

Survey found Steve Jobs' death in 2011 spurred Americans to learn more about pancreatic cancer

Many high school athletes assessed for sprains, strains outside the hospital

Less than a glass a day may also help the heart in those who already have kidney disease, researchers found

Doctors can easily test for excess protein in urine

Artificial Retina Restores Vision Paper Money Carries Thousands of Types of Bacteria: Study