The Treasure Karoo Action Group (TKAG), which is campaigning to stop Shell from drilling for shale gas in the Karoo, has called on government to impose an "immediate halt" to the international energy giant's application for exploration rights...In a critical review report containing inputs from 22 scientists and academics, the group...proposed "that the entire application be subject to a moratorium"...According to the executive summary of the report, compiled by specialist energy attorneys Havemann Inc, fracking poses a serious public health threat. "Apart from the issues of water scarcity, fracking raises serious issues of water quality and thus public health...Fracking, the report warns, has raised major concerns worldwide...