Emissions trading, energy efficiency, carbon tax...what does it all mean?

Kevin Rudd faced a big backlash when he decided to shelve his emissions-trading scheme - one of his key election promises - but how many Australians actually understand how an ETS would work and what other parties are proposing?

Tim Flannery, Australia's leading climate scientist and former Australian of the Year, joins Panorama's Amelia Caddy to talk emissions reduction and the Federal election.

Audio: 

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Tim Flannery - SYNcast.mp3