Dilution is a solution (in a figurative sense) if you know you won't want the substance later on. In some ways, though, pollution is a materials technology pro

Dilution is a solution (in a figurative sense) if you know you won't want the substance later on. In some ways, though, pollution is a materials technology problem, in that we don't know enough about materials technology to either use the pollutant directly or cheaply reprocess it into something we can use.