By Capital FM, Cities are among our greatest experiments in human co-habitation. Do they also hold the answers to some of our biggest problems? This hour, TED speakers explore how cities can change the world.

1. Daniele Quercia: Can Changing Your Route Change Your Experience Of A City?

2. Benjamin Barber: Does The Road To Changing The World Go Through City Hall?

3. Kasim Reed: How Are Mayors Better Poised to ‘Get Things Done’?

4. Robert Muggah: How Are Some Fragile Cities Tackling Their Worst Problems?

5. Amanda Burden: How Can Public Spaces Change A City’s Character?