This weeks guest is Ugo Bardi, Professor of Physical Chemistry at the University of Florence. He specialises in resource depletion, system dynamics modeling, climate science and renewable energy. He is also a member of the scientific committee of the Association for the Study of Peak Oil and Gas, or ASPO, is the president ASPO Italy, and a contributor to the Oil Drum, the best energy blog on the web. He is the author of several books, including "The Limits to Growth Revisited”, his upcoming book "Plundering The Planet", and even finds time to write his own excellent blog, Cassandra’s Legacy. Our discussion covers the role of volcano's, Georg Bauer, the father of mining, space aliens, and climate change.

You can find his blogging work here:

http://cassandralegacy.blogspot.co.uk/
http://theoildrum.com
http://peakoil.net

And here is where you can get a hold of his books:
http://www.amazon.com/Limits-Growth-Revisited-SpringerBriefs-Analysis/dp/1441994157/ref=sr_1_1?s=books&ie=UTF8&qid=1360432828&sr=1-1&keywords=limits+to+growth+revisited

Also, a few weeks ago, I was interviewed for a recent episode of Doug Lains dietsoap podcast, where we talk of Marx, Keynes, and money. You can find the show here: http://douglaslain.net/diet-soap-podcast-170-money/

Enjoy....