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KEY Each footprint equals one percent of the amount of carbon dioxide released into the atmosphere due to energy use.


Simple Solutions When T.H. Culhane first started thinking about energy use, he was working in remote areas in Borneo and in Guatemala. He saw how the people in these places used every part of their environment to thrive. T ey live in a sustainable way. T is means they lived a lifestyle that doesn’t use up Earth’s natural resources. Culhane began traveling around the world


to jungles, remote villages, and urban slums to study the way people lived. He wanted to understand what challenges they faced and see what solutions they had come up with.


What he saw inspired him and led him to


think beyond people living in remote areas. “T ese people inspired me to rethink how people living in cities could live sustainably, too,” Culhane says. Culhane believes that many energy


problems can be readily solved. “All of the solutions to urban problems are already available—somewhere—just waiting for enough people to put them all together,” he says. One solution to developing and using sustainable energy involves natural recycling processes, and it led him to invent something.


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