EcoWatch: If current trends continue, by 2050 70 percent of the worlds population will live in cities, according to the Action4Climate video competition film RotterdamThe Transition to Urban Resilience. Filmmaker Lieke t Gilde says its time to recognize the city as a natural ecosystem in order to meet human needs now and in the future. Gilde says that nature-based and innovative solutions are essential for a sustainable future for cities all over the planet. The film takes place in Rotterdam, the second-largest...