The United Nations climate conference is underway in Glasgow, where several world leaders are sternly criticizing climate actions so far. They depict the climate crisis as apocalyptic and are demanding more to be done urgently. CGTN's Global Watch talked to Winston Chow, a Bangkok-based environment expert specializing in climate resilience. Chow said that major economic countries like the U.S., China, EU and India are key to curbing greenhouse gas emissions.