One of the things that has always bugged me while working with PVC is that it is, as it is presently produced, a poison. Well, OK, it's not, but it contains a lot of poisons. Phthalates are plasticizing agents that are super toxic, and these people are working to phase them out. PVC also, in its present form, contains lead. Certain chemists are learning how to use stabilized zinc and calcium instead. Also, chemists are learning how to synthesize the vinyl chloride monomer from HEMP! That means that in the future, this stuff may be non-toxic and petrochemical independent. YAY!