David Winterton from Sydney-based consultancy Ecological Design gives us a rundown of solar photovoltaic (solar PV). We find out how it works, what the key considerations are and why prices of PV panels always seem to be coming down!

Cath Hassell from ech2o consultants explains what rainwater harvesting is, why it’s useful and how to get started.

If you haven’t heard our first podcast interview with Cath on the topic of saving water, check that one out first!