I welcome Andy Kerr, executive director of the Edinburgh centre for carbon innovation at the University of Edinburgh; Robin Parker, public affairs manager of WWF Scotland; Susan Roaf, a professor at the school of the built environment at Heriot-Watt University; Richard Dixon, director of Friends of the Earth Scotland; Robin Matthews, natural assets theme leader and climate change co-ordinator at the James Hutton Institute; and Tom Rye, professor of transport policy at and director of the transport research institute at Edinburgh Napier University.