Are we at the next electric vehicle charging station yet?

As we digest the travel figures over the holiday weekend in the face of high gas prices, the idea of going electric could look better and better. However, taking a road trip in an electric vehicle comes with its share of challenges, one of them being the availability of charging stations. Sticking with clean energy, we speak to Rice University professor Daniel Cohan, who argues in his new book that any significant movement toward clean power requires a three-pronged approach.