The Energy Symposium: The Rosenfeld Effect was held in the Sibley Auditorium on April 28, 2006. We will focus on the first session, where John Holdren discussed the challenges of the global energy environment and how increasing energy efficiency can help provide useful solutions.
             According to John Holdren, the aims of an efficient energy policy are multiple-folded, differentiated across different categories. There are the economic aims (such as limit costs and providing energetic availability to all individuals), environmental aims (limiting the effects energy policies might have on the environment) and security aims (such as minimizing dependency on certain resources and ensuring that the negative side effects are countered). The problem that often appears is that there is generally a conflict between these different aims or rather a conflict when one attempts to successfully reach all of them.
             According to Holdren, an efficient energy policy would need to ensure a viable energy supply and use technology to diversify this over time. Technologies advances can also, to some degree, reduce the dependency on oil and gas, one of the aims previously mentioned and which has been constantly increasing. The environmental effect could also be limited, especially since, according to Holdren (who presents several charts and data in this sense), the greenhouse effect will continuously grow if things continue as today.
             There is a need to increase the use of alternative energy sources so as to be able to reduce dependency and address climate change issues at a global level. Some of these were implemented in California by Art Rosenfeld, whose legacy needs to be followed.
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