Can European cities lead in the fight against climate change?

Cities are the engine houses of climate change – they consume 65 % of the planet's energy and produce 70 % of greenhouse gas emissions responsible for warming the planet. And they are often one of its biggest victims: residents drown in dense concrete environments due to the "heat island effect".

Urban populations are expected to double by 2050, meaning cities' climate footprint could increase unless the way we plan, power and move around them changes. (Holly Young, more at dw.com)