'Energising the city'

This is one of UCL's lunch hour lectures given by Yvonne Rydin from the Bartlett School of Planning.  She talks about how to provide energy to cities in the future as an alternative to using fossil fuels. 
Incase you're wondering how this is related to geoengineering, she is talking about how to combat global warming and reduce carbon emissions by using renewables and lots of other geoengineering techniques (such as carbon capture, solar power).

You can listen to it here:

 

It's not greatly in-depth but good nonetheless.