Twins in Malawi helped scientists discover a role the gut microbiome appears to play in severe malnutrition. Photograph courtesy of Tanya Yatsunenko hide caption

toggle caption Photograph courtesy of Tanya Yatsunenko

Microbiologist Emma Allen-Vercoe invented the Robogut, a mechanical device that mimics conditions in the human colon. Courtesy of thestar.com hide caption

toggle caption Courtesy of thestar.com
Ayodhya Ouditt/NPR

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