A dramatic reduction in Canadian media coverage of climate change science issues is the result of the Harper government introducing new rules in 2007 to control interviews by Environment Canada scientists with journalists, says a newly released federal document.  “Scientists have noticed a major reduction in the number of requests, particularly from high profile media, who often have same-day deadlines,” said the Environment Canada document. “Media coverage of climate change science, our most high-profile issue, has been reduced by over 80 per cent.”