Video: A recent U.K. study claims some purses and handbags are loaded with more bacteria than the average toilet. The 'Today' show puts those findings to the test, taking samples from handbags for microbiologist Nathan Lents of John Jay College to analyze.
Video: The FDA is reviewing whether triclosan, an antibacterial chemical contained in liquid soap and body wash, may be ineffective or even harmful to humans. Recent studies on animals have shown an increased risk of infertility, early puberty and other hormonal issues.
For hundreds of years, the human immune system has relied on a regular stream of biological tourists for health, but when things get too squeaky clean, there's a problem. An easy fix: Go dig in the dirt for a while.