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Student's device purifies water without chemicals or electricity

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Deshawn Henry
Deshawn Henry, photographed at the University at Buffalo, 2014.
Courtesy of the University at Buffalo

Nineteen-year-old Deshawn Henry is a student at the University at Buffalo and he, along with the help of his professor Dr. James Jensen, has developed a new water purification device that requires no chemicals or electricity.

The "Water Lens" uses only the power of the sun, but can kill 99.9 percent of all bacteria and pathogens found in polluted water. It could be a powerful new tool for fighting disease in developing regions around the world.

• Listen to an extended interview with Henry from A Beautiful World.