Mr Murdoch and his wife Kathryn, an NGO worker, issued a joint statement which accused Rupert Murdoch's news outlets of "ongoing denial" over the severity and extent of climate change.
In response to that ordeal, News Corp Australia's head honcho Michael Miller said "Australia is having a serious conversation about climate change and how to respond to it", but continued to focus on arson as a central factor in the intensity and severity of the ongoing bushfires.
The public outburst comes as Australia has been hit by the worst fires in decades.More news: Australian Open officials tight-lipped as smoke questions linger
The Australian wildfires have killed 27 people and an estimated 1 billion animals, and have destroyed thousands of properties in multiple states.
The company also runs Sky News Australia, which offers an nearly constant stream of climate change science denial from hosts that include Peta Credlin, Alan Jones and Chris Kenny.
News Corp has declined to respond to James Murdoch's criticism, referring instead to an editorial in the Australian newspaper four days ago, that said in part that social media is driving a campaign of outrage about an alleged right wing conspiracy of climate denialism.More news: Red Sox officially part ways with Alex Cora
James Murdoch continues to sit on the board of his family's media company, which publishes The Australian, The Daily Telegraph and the Herald Sun, but is less active than his older brother, Lachlan, who is co-chairman and chief executive of Fox Corporation.
Rupert Murdoch was forced to defend the company's regressive stance on climate change reporting at the News Corporation annual general meeting held in November a year ago, saying "there are no climate-change deniers around, I can assure you".
News Corp on Monday announced a major donation for bushfire relief in Australia as the country copes with the growing disaster.More news: Baby Yoda Problems Is Today's Internet Trend And There’s Nothing Better
The accusations were levelled by commercial finance manager Emily Townsend in a company-wide email to staff.