"Salven el clima. El sol es la respuesta."
Greenpeace activists project this message onto the mountain of Huayna Picchu, above the Machu Picchu site, to ring in the beginning of the end of coal- and oil-driven economies. As the UN climate summit gets underway in Lima, Peru, they are asking the decision-makers attending the 20th session of Conference of the Parties (COP 20) to adopt a new course and lead us to 100% renewable energy for all by 2050.