One Young World Counsellor Mary Robinson, Ireland's first female President, encourages young leaders to take part in Call on COP. Call on COP is the most global action on Climate Change in 2015. At the One Young World Summit 2015, young leaders from every country in the world will address their Heads of Government on mainstream media two weeks before the Paris Climate Conference - COP21.Each Call On COP delegate will deliver an impactful speech highlighting how climate change is endangering our future. 20 years of UN climate negotiations have been unable to produce a legally binding and universal agreement on Climate Change. The united voice of young leaders can help ensure that governments act to avoid catastrophic Climate Change.