Innovation : Goats and Soda Innovation

Winners of the 2018 Skoll Awards for Social Entrepreneurship (from left) are Jennifer Pahlka, Harish Hande, Jess Ladd, Lesley Marincola, Anushka Ratnayake and Barbara Pierce Bush. David Fisher/Skoll Foundation hide caption

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David Fisher/Skoll Foundation

Clockwise from upper left: Dr. Forster Amponsah; a Malick Sidbe photo taken in Mali; a global garden of radio; Chewa the TB-sniffing rat; another Sidbe photo; Olympic medalist Fu Yuanhui of China; the New Mexico cave where a superhero bacterium lived; poverty fighter Sir Fazle Hasan Abed; calligrapher Sughra Hussainy; activist Loyce Maturu. Jason Beaubien/NPR, Courtesy of Malick Sidibe and Jack Shainman Gallery, Katherine Streeter for NPR, Maarten Boersema/APOPO, Gabriel Bouys/AFP/Getty Images, Courtesy of Max Wisshak, Courtesy of BRAC, Ben de la Cruz and Toya Sarno Jordan/NPR hide caption

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Jason Beaubien/NPR, Courtesy of Malick Sidibe and Jack Shainman Gallery, Katherine Streeter for NPR, Maarten Boersema/APOPO, Gabriel Bouys/AFP/Getty Images, Courtesy of Max Wisshak, Courtesy of BRAC, Ben de la Cruz and Toya Sarno Jordan/NPR