Wannes (L) and Jonan Rock wear cardboard spectacles with "climate change kills" and "act now, save lives" written on the rims and hold a life ring with same message. They are taking part in the “Walk for Our Winter" which is part of the COP15 Global Day of Action. Protesters take part in this three-legged walk demanding global action on climate change as delegates gathered in Copenhagen for the UN Climate Change Conference.