The Art of Clean Up

In the 2021 mSystems Perspective article “It’s the Economy, Stupid: Applying (Micro)economic Principles to Microbiome Science” (Kashtan, Bushong, Leveau), we mention two photographs that appear side-by-side in the book “The Art of Clean Up: Life Made Neat and Tidy” by Ursus Wehrli. We asked for, but were not granted, permission from publishing house Kein & Aber AG (Z├╝rich, Switzerland) to reproduce the photographs in our Perspective article.