I notice you don't cite a single article, but here's one: http://www.salon.com/2014/08/19/canadas_despicable_climate_c...
"In 2010, three years after Harper first introduced the new communications policy, Environment Canada reported that media coverage of climate change had dropped by more than 80 percent. Meanwhile, the Canadian government’s continued to wage war on science, often at the expense of the environment. In 2013, when NSIDC again reported that summer sea ice was melting, Leona Aglukkaq, Harper’s environment minister, downplayed the findings, explaining in a follow-up conversation that it was “debatable” whether the Arctic was warming. Without free access to the facts, one could argue, that’s a pretty difficult debate to have."
And here's a University of Victoria report: http://www.elc.uvic.ca/2013-muzzlingscientists/
"Yet research done by ELC student Clayton Greenwood demonstrates that the federal government is preventing the media and the Canadian public from speaking to government scientists for news stories especially when the scientists’ research or point of view runs counter to current Government policies on matters such as environmental protection, oil sands development, and climate change. In sharp contrast to past Canadian practice and current US government practice, the federal government has recently made concerted efforts to prevent the media and through them, the general public from speaking to government scientists, and this, in turn, impoverishes the public debate on issues of significant national concern. "
I did some googling and couldn't find a slime mold story, but surely you have a link handy?