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UK guest host Greg Moffitt from Legalise-Freedom.com interviews scientist David Fridley, from Berkeley National Lab and the Post-Carbon Institute.

We will switch away from fossil fuels sooner or later, because they will run out. If it’s later, our kids get a wrecked civilization trying to cope with a wrecked climate. This week on Radio Ecoshock we finish out a three-part series on alternative energy, what it can do, and what it can’t.

The take-home from green energy lovers and haters alike is simple: we can’t have this crazy civilization running just on the sun and wind. When we stop milking the billion year-pile of concentrated solar, known as oil, gas and coal – something has to change.

Wind power image via damien_m_in_japan/flickr. Creative Commons 2.0 license.