World 'nowhere near on track' to avoid warming beyond 1.5C target

Exclusive: Author of key UN climate report says limiting temperature rise would require enormous, immediate transformation in human activity

The world's governments are "nowhere near on track" to meet their commitment to avoid global warming of more than 1.5C above the pre-industrial period, according to an author of a key UN report that will outline the dangers of breaching this limit.

A massive, immediate transformation in the way the world's population generates energy, uses transportation and grows food will be required to limit the global temperature rise to 1.5C and the forthcoming analysis is set to lay bare how remote this possibility is.