Following the half-a-million signatures to Kevin Rudd's call for a Royal Commission, Greens senator Sarah Hanson-Young has launched a push for a Senate inquiry into media diversity.
She says the "cosy relationship" between the Coalition government and News Corp should be scrutinised.
"When you have half a million people signing a petition premised on investigating Murdoch's dominance of news media, the parliament should be listening," she said.
Hanson-Young will move to establish the Senate inquiry today. She will need the support of Labor, the crossbench and One Nation to get an inquiry established by the environment and communications references committee.
The petition by former Labor prime minister Kevin Rudd was presented to parliament on Monday by Labor MP Andrew Leigh.
"Australians have clearly become increasingly concerned about media diversity in Australia and the Greens share those concerns," Hanson-Young said. "We need to ensure we have a strong and independent public interest news industry to support our democracy."