Eating Kangaroo reduces your Carbon Footprint...Skippy Anyone?

To be honest when I first read The Independent  headline Skippy for supper: Kangaroo meat is healthy, plentiful and leaves a tiny carbon footprint I wondered if it was dry British humor or if this was for real.
 
Upon reading Rob Sharp's article, I found out that it actually was based on a Greenpeace Australia study brought to light in Should we be eating Skippy to solve climate change? (October 07) on their blog Making Waves.