David Rothfield, retired civil engineer and long time former local resident of The Patch, spoke on behalf of Beyond Zero Emissions, which is an Australia-based not-for-profit climate change solutions think-tank, that was founded in 2006. His talk was titled "How do we build a post carbon future in Australia?"
The illustrated talk commenced with a diagram of the earth that is protected by an atmospheric layer, consisting of progressively diminishing thinner layers, with the major threat from carbon dioxide produced by the burning of coal.