Ugo Bardi speaks about mineral depletion

Here is the podcast that was posted on "From Alpha to Omega" by Tom O'Brien, after he interviewed me over the phone.

I am not sure that anyone would be interested to listen to me for about 46 minutes, except for the fact that there is some nice music in between my boring ramblings. Anyway, if you really don't have anything better to do, you can listen to me discussing about subjects such as mineral depletion, the history of the Earth, how the ecosystem functions, the future of humankind and the like. All subject that you will find described in detail in my upcoming book "Plundering the Planet".