Dr. Erica Hartmann, an associate professor in Civil & Environmental Engineering at Northwestern University, dives into the surprising world of bacteriophages found in our bathrooms. Over 600 different viruses, mostly novel to science, were discovered lurking in showerheads and toothbrushes. She explains how these viruses prey on bacteria and their potential as alternatives to antibiotics amidst growing resistance. The conversation also touches on the historical efforts in bacteriophage research and the need for modern techniques to unlock their medical possibilities.