New research about the brain:
Some people are really bad at singing a song they've heard, and scientists are figuring out why. The phenomenon, called tone deafness, refers to people who do poorly at distinguishing between different musical tones. Researchers at Beth Israel Deaconess Medical Center and Harvard Medical School in Boston, Massachusetts, looked at images of the brains of 10 people who tested as being tone deaf, and 10 people who were not.
Read more, including losing direction and smell here on CNN.