At the COP30 summit in Brazil, more than 80 countries are calling for a global roadmap to phase out fossil fuels. But a key nation is absent from the annual meeting for the first time - the United States. As the Trump administration pulls back from climate commitments, a new player is stepping in. China is the world’s biggest polluter, but also the world’s biggest investor in clean energy. Many are asking if Beijing could fill the leadership gap left by the US. Chapters: 0:00 Calls for China to