Climate activists attend conference before C40 summit in Copenhagen Youth climate activist Jamie Margolin asks mayors to "understand the fear and despair that young people live with on a daily basis" because of the climate crisis at a press conference ahead of the C40 summit opening in Copenhagen where mayors recognise global climate emergency, while newly elected C40 Chair, Los Angeles Mayor Eric Garcetti underlined 425 American mayors accepted the Paris agreement. IMAGES AND SOUNDBITES