UN sounds clarion call over 'irreversible' climate impacts by humans

We ignored the warnings, and now it's too late: global heating has arrived with a vengeance and will see Earth's average temperature reach 1.5 degrees Celsius above preindustrial levels around 2030, a decade earlier than projected only three years ago, according to a landmark UN assessment published on Monday. Thomas Friang, Director General of the Open Diplomacy Institute, gives his analysis.