It's official: Rupert Murdoch's News Corp is "overwhelmingly misleading" when it reports on climate science. A new study by the Union of Concerned Scientists (UCS) finds that 93% of climate science coverage by News Corp-owned Fox News is "misleading". Things aren't much better at the Wall Street Journal, also owned by News Corp, where 81% of the climate science opinion pieces are also guilty of being "misleading". Apparently Rupert Murdoch's promise in 2007 to treat climate change as fact didn't amount to much.

News Corps' problem isn't just neglect of climate science, but the systematic spread of misinformation. One shining example of journalistic malpractice came in 2009, when Fox News Washington's managing editor directed his reporters to cast doubt on the scientific consensus of climate change. They dutifully carried those orders out.

Fox is regularly lampooned for their conservative bias, but this wilful manipulation of facts is different. If a scientific subject – like climate change – is only truthfully represented 7% of the time on a major news network, how is the public expected to make informed decisions about the critical issues confronting us? It's no surprise that 60% of Americans no longer trust what they hear on the news.

Take action: It's time for truth to take centre stage. Help hold Rupert Murdoch accountable by signing the UCS petition calling on News Corp to get the facts straight.

Sources: Union of Concerned Scientists, Grist, Media Matters, Avaaz