Rupert Murdoch's News Corporation is being sued by a group of its own shareholders for "nepotism" in its purchase of Murdoch's daughter Elizabeth's production company. The group alleges that News Corp overvalued Shine in its $US675 million deal, claiming that "Murdoch constantly engages in transactions designed to benefit family members" and that the veteran media mogul treats News Corp "like a wholly owned family candy store." News Corp has dismissed the lawsuit, saying that it is "without merit." Garnaut recommends carbon price level Professor Ross Garnaut, the Federal Government's climate change advisor, has recommended a carbon price of between $20 and $30 a tonne, rising 4% a year until an emissions trading scheme is introduced in 2015. Garnaut said that petrol should be included in the carbon price, but insisted that low and middle-income Australians would be better off under the scheme.