(CNN) -- Over the past four months "Road to Durban: A Green City Journey" has traveled south from the UK to the COP17 Conference in Durban, exploring efforts to reduce carbon emissions in urban centers. In the UK, Germany, Turkey and South Africa, three CNN reporters went in search of the best examples of how carbon cuts are being made in cities - with a particular focus on industry, transport, waste, architecture and the economics of renewable energy. But what are our governments doing in the battle against global warming? CNN's Robyn Curnow hosts a high profile panel debate with four leading thinkers in the environmental lobby.
@highlight
December's Road to Durban comes from COP17 in Durban
@highlight
We will be hosting a series of panel discussions on subjects coming out of COP17
@highlight
Panelists will include former Irish President Mary Robinson and head of Greenpeace International Kumi Naidoo
-@placeholder, native South African and Executive Director of Greenpeace International