Ashok Gadgil: The Humanitarian Inventor

His work on water purification, cookstoves, and arsenic removal has helped tens of millions of people worldwide

5 min read
Ashok Gadgil: The Humanitarian Inventor
Photo: Gabriela Hasbun

No! No! No! In Ashok Gadgil's cluttered office at the Lawrence Berkeley National Laboratory, hidden among the stacks of books and awards and whiteboards and ID badges from humanitarian organizations, you'll spot tiny pictures of former U.S. first lady Nancy Reagan. “Just Say No!," each picture implores.

Gadgil has appropriated Reagan's antidrug slogan for his own ends. “I tend to say yes too often," he says, laughing. “Saying no is valuable, because I'm interested in lots of stuff, but my time is full."

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University College London

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