Sydney Morning Herald: THE lower Murray is on death row. Its death warrant was signed on Thursday by the Council of Australian Governments, which came up with another historic deal to establish a new independent Murray-Darling Basin Authority that would get under way some time next year. It is too late. It is too late for water trading to create the environmental flows that can flush out the heavy metals that are seeping up the lakes at the river mouth. The cheap solution to build a weir across the …