As momentum builds towards an international climate change agreement at the UN COP 21 conference in Paris, The Royal Society, The French Embassy and Radio New Zealand have collaborated on a series of panel discussions on humanity's capacity to adapt, become resilient and address the greatest challenge posed to human existence. The age of the anthropocene has heralded concerns both within and between nations. What is the trade-off between development and high emissions? Who is responsible for the environmental disasters in impoverished countries caused by climate change? Should developing nations be expected to leap frog traditional growth to be green economies and who should help them? Today's panel, recorded in Wellington, asks if the way out of this gridlock involves proposing new models of climate justice. Kim Hill is in the chair: