http://www.livescience.com/scienceoffiction/070105_nanofabric.html This reminds me of an old army joke: After living in the field for a week under the most primative conditions, the commanding officer decided to give his troops a break and allow a change of underwear. So he called the troops to attention and gave them the good news. "Men, in the interest of personal hygene, we are going to change our shorts today. Private Smith, change with Private Gonzales. Private Jones, change with Private Black..."