Ray Sipherd is a writer and journalist. He is also a former writer-producer for New York's public television, WNET.
More than 250,000 people in the US die yearly because of medical mistakes, making it the third-leading cause of death.
This year may see the end of the wild poliovirus.
USC stem cell scientists are developing a new procedure to treat baldness that uses hair cells grown in the lab for transplants.