Field Visit: Sanitation Innovation
Watch this video from my trip to Durban, South Africa where I met with sanitation experts who had developed a safe and inexpensive alternative to the pit toilets used by many poorer families around the world.
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Read previous versions of the Annual Letter
Looking back at 2013, I wanted to share a different kind of list.
This is my personal blog, where I share about the people I meet, the books I'm reading, and what I'm learning. I hope that you'll join the conversation.
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