Doctors and public health officials are concerned about the growing number of antibiotic-resistant superbugs like methicillin-resistant Staphylococcus aureus, better known as MRSA, and Clostridium difficile, or C. diff, as well as more common, yet still dangerous, bacteria like E. coli and Staphylococcus epidermidis. Now, doctors and public health officials may have a surprising ally in the fight against these bacteria: natural clays. According to a new study, clays with antibacterial properties found near Crater Lake in Oregon could eventually lead to new agents in the fight against these bacteria.