Photo: Courtesy of Garrett Yazzie
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Garrett Yazzie's family lived in a singlewide trailer on a Navajo reservation in Arizona. Coal for the stove was expensive and aggravated his sister's asthma. But their cold nights came to an end when Garrett cobbled together a solar heater from a '67 Pontiac radiator and 69 soda cans, generating free, clean heat for his family.