If you are depressed, or schizophrenic or have Alzheimer's, scientists say you probably have a shrunken hippocampus. The good news: a drug that just entered human trials promises to re-grow that part of the brain.
A biotech company that after much turmoil and huge expense launched the first human embryonic stem cell clinical trial in the United States is getting out of the stem cell business.
Last May, 39-year-old Ted Harada was diagnosed with ALS, also known as Lou Gehrig's disease. It's one of the worst diagnoses anyone could get.