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After European Union leaders’ decision to reduce greenhouse gases by at least 40% by 2030, US and China also agreed to take actions to limit greenhouse gases.These decisions are very ambitious, and could literally save the world from pollution and climate change, but as noted by Rebecca Leber ((LEBER, R., 2014. The World has waited for the U.S. and China to ake action on climate change. They just did, The New Republic, November 12, 2014. Retrieved from http://www.newrepublic.com/article/120242/us-and-china-reach-agreement-climate-change)), there might be some obstacles to their implementation.Both countries have a lot of work ahead to get to these targets.