Materials science: Searching for coatings that change colors and touch themselves up.
The U.S. military has launched an offensive against one of its most stubborn enemies -- rust. The Army spends $10 billion a year dealing with it. Scraping and repainting is not only expensive, it requires the use of hazardous chlorinated solvents. So the Pentagon has funded a project, headed by the New Jersey Institute of Technology, that aims to create coatings that inhibit corrosion and virtually eliminate the need to repaint tanks.