Your bathroom may seem like a sterile environment, but it turns out to be home to an astonishingly diverse community of microorganisms, according to a new study led by microbiologists at Northwestern University. Showerheads and toothbrushes, two of the most common objects in any household, harbor a vast collection of viruses—many of which have never been documented before. The catch? These viruses aren’t targeting humans. Instead, they infect bacteria, offering intriguing possibilities for the future of medicine, particularly in the fight against antibiotic-resistant infections. The viruses id…