The US and China Have Officially Ratified the Paris Climate Change AgreementGeorge Dvorsky9/03/16 10:00amFiled to: Climate changeglobal warmingparis accordparis climate change agreementchinaunited statespoliticsus politicssciencegreenhouse gas emissionscarbon emissionscarbon dioxide12513EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkChinese President Xi Jinping and US President Barack Obama shake hands as UN Secretary-General Ban Ki-moon looks on during a joint ratification of the Paris climate change agreement in Hangzhou, China. (Image: How Hwee Young/Pool Photo via AP)In what’s being seen as a huge step forward in the effort to curb climate-warming emissions, the United States and China have ratified the Paris global climate agreement. Other countries are now expected to follow suit. Earlier today, US President Barack Obama and Chinese President Xi Jinping submitted their written commitments to join the Paris agreement at a meeting in Hangzhou, China, that included UN Secretary-General Ban Ki-moon. The joint ratification, which involved the world’s largest two economies, could inspire other countries, such as Canada, India, the UK, and Brazil, to do the same.