Former Climate Czar: 2015 Is Make-Or-Break Year for U.N. Process

It's been a while since Yvo de Boer has been in the thick of annual climate change negotiations drama. But the former U.N. global warming chief says it's a bit like watching the old soap opera "As the World Turns."

"Each episode is very exciting, but if you don't watch for two years, you haven't missed anything," he said.

Former Climate Czar: 2015 Is Make-Or-Break Year for U.N. Process