Photo gallery: Two rodent experts conducted a survey on the impact of the economic downturn on rat populations in U.S. cities. It isn't a moment of pride for the cities that made the list, but MNN tries to look on the bright side.
Study of factory workers in China is extreme example of exposure, researchers warn, but it is the first to look specifically at the effect of BPA on humans.
Video: Lauren Johnson of Virginia has been unable to stop sneezing for more than two weeks. Today's Ann Curry talks to Lauren, her mother Lynn Johnson, and NBC's chief medical editor, Dr. Nancy Snyderman, about the condition.