Have we actually realised that, if planet earth dies, so will we? And if so, are we ready to dedicate our time and effort to making mother Nature’s voice heard? Demetres Karavelas challenges the TEDxPatras audience to acknowledge the emergency lying beneath those simple yet demanding questions. The CEO of WWF Greece talks about the inseparable bond between environmentalism and active citizenship and explains why the environment is amongst those values that have and will always withstand change in time, displaying a constant that determines our very existence.