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How can scientists help people in low-income countries access safer water and better sanitation? Discover how environmental health engineer Amy Pickering combines social science, microbiology, and engineering in her work as a research associate at Stanford University in the Department of Civil and Environmental Engineering and at the Woods Institute for the Environment. She tries to reduce the spread of disease by coming up with low-cost and low-tech solutions that can help minimize illnesses in areas with poor water quality. She also runs research studies to test how well these interventions prevent the spread of disease. Pickering spends about 20% of her time in the countries in which she works and the rest at Stanford.