In 2006, plans were announced for the world's first carbon-neutral city.
원문출처 : http://www.cnn.com/2016/08/25/arts/city-of-possibilities-etienne-malapert/index.html
원문출처 : http://www.cnn.com/2016/08/25/arts/city-of-possibilities-etienne-malapert/index.html