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Octavia Ccahuata prepares a guinea pig for cooking in her kitchen, which is fitted with cooking equipment that save energy and reduce smoke emission as part of the “Hot Clean House” ecology project in the Andean town of Langui in Cuzco March 9, 2012. The Pontifical Catholic University of Peru (PUCP) developed the “Hot Clean House” project, which uses solar power to warm houses and energy-saving technologies for cooking to counter extreme cold weather in the highlands. These technologies have been implemented in communities in the highlands of Cuzco. (Photo by Mariana Bazo/Reuters)
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