Eco audit: Should we be aiming to keep global warming to 1.5C, not 2C?

2C, the widely reported safe global warming limit, would still mean devastation for many countries that are pushing for a more ambitious target for a climate deal in Paris - but is 1.5C realistic?

2C - it's become shorthand for a safe, equitable climate deal. But the science and the UN's position is unequivocal that if the world warms 2C above the pre-industrial age by 2100, many countries will face unbearable devastation.

Of the 195 countries present at the UN climate conference in Paris, 106 of the poorest have said a target of 1.5C is the only acceptable pathway for humankind. The head of the UN's climate process, Christiana Figueres, has also backed this goal.