ChaeaSoccer-ball–shaped carbon nanoparticles called buckyballs may keep water flowing through filters, new research shows. As water passes through treatment plants, communities of bacteria called biofilms sometimes stay behind and gum up the works, a harmful process known as biofouling. Biofouling costs the United States billions of dollars each year in equipment damage, contamination, energy loss and medical costs stemming from bad water, according to the Center for Biofilm Engineering at Montana State University in Bozeman...