Scientists think that new nanoparticles called nanoceria, made out of cerium oxide, are strong antioxidants. So to test the possibility that nanoceria might be used to fight cellular damage from reactive oxygen species (ROS), a team from University of Central Florida treated mice with retinal defects, similar to those in people with age related macular degeneration, and found positive results. The National Science Foundation reports: In a nanocrystalline form, cerium oxide is a powerful an