This is a book that has documented the rw tactics - and the confusion we see today is part of a reichwing process that started 30 years ago as a concerted decision to keep people off balance and confused.
Global climate change deniers often were paid shills for energy corps. and Big business.
RW also used confusion about science to push their wedge issues and social agenda, which was a great way to keep people in line and voting on social issues even against their own broader political interests.
This link has some free excerpts by a book writen by Chris Mooney, it's fascinating reading to see what lengths the rw has gone to in order to disseminate confusion about science, so then, naturally, they want people to fall into line with their agenda.

http://www.waronscience.com/book.phpScience has never been more crucial to deciding the political issues facing the country. Yet science and scientists have less influence with the federal government than at any time since the Eisenhower administration.
In the White House and Congress today, findings are reported in a politicized manner; spun or distorted to fit the speaker’s agenda; or, when they’re too inconvenient, ignored entirely. On a broad array of issues—stem cell research, climate change, abstinence education, mercury pollution, and many others—the Bush administration’s positions fly in the face of overwhelming scientific consensus.
In The Republican War on Science, Chris Mooney tied together the disparate strands of the attack on science into a compelling and frightening account of our government’s increasing unwillingness to distinguish between legitimate research and ideologically driven pseudoscience.
Now, in a revised and expanded paperback edition, Mooney brings us up to date on the war on science, relates the phenomenon to the Bush administration’s handling of the Iraq war and Hurricane Katrina—and ends with a call to arms to scientists and their allies.