Reducing greenhouse gases can be considered the most important task for the future survival of our species in the 21st century. Will mankind be capable of permanently keeping a promise it makes to itself, posterity, and the planet?
減產溫室氣體，可以說是二十一世紀掌握人類未來生死的最重大事件，人類能否對自己、對後代、對地球做出永續承諾？