The United Nations climate change conference began with a bracing warning: We are running late, and that is going to make this harder.
"Millions throughout the world, especially young people, are calling on leaders from all sectors to do more, much more to address the climate emergency we face," U.N. Secretary-General António Guterres said on Monday.
"Do we really want to be remembered as the generation that buried its head in the sand? That fiddled while the planet burned?" he said.