The environment is central to Bhutan's Gross National Happiness. The Index measures a myriad of issue including attitudes on conservation, pollution and waste. Preserving 60% of Bhutan's forests is enshrined in the constitution to maintain the country ecological diversity.
Julie McCarthy for NPR
Chinese President Xi Jinping, left walks with U.N. Secretary-General Ban Ki-moon, on Saturday at U.N. headquarters in New York. At a U.N. conference, Xi pledged billions in Chinese aid to developing nations.
Bryan R. Smith/AP
Workers with Ceria wait for a pipe-welding machine to finish connecting two sections of plastic irrigation pipe in Bario, Malaysia. The company has brought mechanized farming to the Kelabit Highlands.
Jerry Redfern for NPR
As China continues its massive economic growth, especially in cities, the government continues to severely limit people's rights. Is that system sustainable?
Johannes Eisele/AFP/Getty Images
Chinese President Xi Jinping, center, and Asian leaders approved an agreement on the Asian Infrastructure Investment Bank in Beijing in Oct., 2014. European countries are beginning to sign up too.