COP28 climate summit gets under way in Dubai

COP28 is set to get under way, with world leaders arriving in Dubai after a year of weather extremes. The climate summit is taking place in the United Arab Emirates, which is one of the world’s top oil-producing nations, and the presidents of the world's biggest greenhouse gas emitters - the US and China - are not attending. Scientists have said the planet is heading for catastrophic changes under current climate policies, while the UN has warned that efforts to limit global warming are “severely off track”.