With more than half the world’s population now living in urban areas, it’s increasingly understood that cities can drive sustainable development.

But that’s not so easy in places where heavy industry has left a toxic legacy that developers are unwilling to pay to clean up, as Glasgow Council Leader Susan Aitken told Daniel Johnson from UN News, at an Economic Commission for Europe (UNECE) event in Geneva.

She explained that despite the massive challenge, the benefits could be enormous, since the Scottish city has more spare land within its borders, than any other major urban area in the United Kingdom.