"Global Leaders Unite at COP28 Climate Summit in Dubai: Live Updates and Agenda"

U.N. Secretary General António Guterres warns that the world is running out of time to limit global warming to 1.5 degrees Celsius, calling for urgent action to prevent a "planetary crash and burn" at the U.N. climate change conference, COP28. Guterres emphasizes the need to phase out fossil fuels and highlights the failure of leaders since the 2015 Paris agreement in reducing emissions. The summit aims to assess progress and determine if there will be an agreement to address the planet's dire situation. Notable leaders, including President Biden and Chinese President Xi Jinping, are absent from the event.