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  • Michelle Sconce Massaquoi University of Oregon

For my fourth-grade science fair project, I tested different soaps to see which ones were the most effective at keeping my hands clean.

  • Johanna Ohm | Graduate Student in Biology, Pennsylvania State University; Andrew Read | Evan Pugh University Professor of Biology, Entomology, Pennsylvania State University

We live in a dirty world. Wherever we go, we are among microbes. Bacteria, fungi and viruses live on our phones, bus seats, door handles and park benches. We pass these tiny organisms to each other when we share a handshake or a seat on the plane.