Water engineer David Bristow is an expert witness in many environmental cases and owner of water engineering and training firm, Simmonds & Bristow. He discusses Urban Water, Smart Urban Water and different approaches to slaking the city's thirst without damaging the environment,

Mining the sewer

Geoff Ebbs is a thinker, actor and writer. 
Since 2005, The Generator has provided content for a range of radio stations and shows including The Cross, Chime, Cage Live and EcoRadio. This Soundcloud account is the audio repository for those projects.
Geoff is the author of best selling books including The Australian Internet book, Sydney's Guide to Saving the Planet and the forthcoming Your Life Your Planet.
His long term concern for a sustainable economy and agriculture has led him to support a range of Green businesses and groups and hold a wide range of official positions in The Greens until late 2015. His business, Great Notion provides investment and srategic acvice to Social Entrepreneurs and Profit for Purpose organisations,