mr. robert alvarez. bob alvarez is one of those who has been following nuclear power plants for a long time. he is the former senior policy advisor and assistant secretary of energy and has many many other credentials to be addressing the subject. i want to begin with mr. bob alvarez, formerly of the department of energy. bob? >> i'm recovering from the department of energy. [laughter] >> what i'm going to talk about here are mostly predisposal issues associated with nuclear power plants. especially the spent fuel aspect of it, which is really the most significant long-lasting problem facing the closure of power plants. as you know, nuclear power plants are no longer just about generating electricity. they have become major large scale radioactive waste management operations. after about 60 years, the united states has generated roughly 30% of the total global inventory of spent nuclear fuel. by far, the largest, about 80,000, 150 metric tons, about 125 sites, 99 which are operational. why should we be conce