Emma Bonnevier, Swedish Association of Local Authorities and Regions. Photo: Ryan Tebo / Sveriges Radio.

Lyssna: "Lots of initiatives come from a very grassroots level"

Cities are becoming more dense, as more and more people move into them. This is creating many challenges and opportunites for Swedish city planners to forge future cities.

Over the past century world population has been moving into cities at breakneck speed. According to UN data, in 1970, 37 percent of the world's population lived in urban areas. Now around half do, and that number is expected to rise to around 60 percent by 2030. This...