The UN told world leaders to end their addiction to coal. Coal is a "major threat" to climate change. The UN said countries in Asia are in areas at risk to climate change. The UN said: "Unless we are able to...defeat climate change, in 2050, the research has forecasted that 300 million people in the world will be flooded by sea water."
The UN said climate change was, "the biggest threat to the planet at the present moment". It wants countries to stop building coal-power electricity plants. There are dangerous levels of air pollution in Delhi. A health official tweeted: "We are heading towards Delhi recording the most polluted day in the history of the world!!"