Source: South China Morning PostChina and the United States are playing very different tunes about how they should bear the responsibility of tackling climate change, underlining their rivalry despite this being an issue they both agreed to work together on.In speeches delivered at the US-hosted Earth Day Summit on Thursday, US President Joe Biden said his country was not the only major polluter and that the “world’s largest economies” had to step up. But his Chinese counterpart Xi Jinping said nations had to be credible…Read More