COP15 – the 2009 Copenhagen Climate Change Conference is being billed as the last chance governments have to get their environment policy right. Over the next 12 months we will be running a series of features with people in politics, environment and the arts, as a countdown to Copenhagen 09. First, though, a brief word with the young design team from Denmark who created COP15’s new logo. Why does a logo matter when you’re trying to save the world?