Heartland Institute
The Heartland Institute is “the world’s most prominent think tank promoting skepticism about man-made climate change.” — The Economist, May 26, 2012. They are #7 on Mother Jones Dirty Dozen of Climate Change Denial.

Competitive Enterprise Institute

Founded in 1984, the Competitive Enterprise Institute is America’s leading advocate of regulatory reform on a wide range of policy issues. We fight for less regulation, more freedom, and fairness for all. Our proven comprehensive approach to advancing public policy turns policy proposals into concrete reforms.

CO2 Coalition

The CO2 Coalition was established in 2015 as a 501(c)(3) for the purpose of educating thought leaders, policy makers, and the public about the important contribution made by carbon dioxide to our lives and the economy. The Coalition seeks to engage in an informed and dispassionate discussion of climate change, humans’ role in the climate system, the limitations of climate models, and the consequences of mandated reductions in CO2 emissions.

Committee for a Constructive Tomorrow

At the heart of CFACT, our goal is to enhance the fruitfulness of the earth and all of its inhabitants. CFACT accomplishes this through four main strategies:

  1. Prospering Lives. CFACT works to help people find better ways to provide for food, water, energy and other essential human services.
  2. Promoting Progress. CFACT advocates the use of safe, affordable technologies and the pursuit of economic policies that reduce pollution and waste, and maximize the use of resources.
  3. Protecting the Earth. CFACT helps protect the earth through wise stewardship of the land and its wildlife.
  4. Providing Education. CFACT educates various sectors of the public about important facts and practical solutions regarding environmental concerns.

American Enterprise Institute

The American Enterprise Institute is a public policy think tank dedicated to defending human dignity, expanding human potential, and building a freer and safer world. The work of our scholars and staff advances ideas rooted in our belief in democracy, free enterprise, American strength and global leadership, solidarity with those at the periphery of our society, and a pluralistic, entrepreneurial culture.

Science and Environmental Policy Project

Established in 1990 by S. Fred Singer to challenge government environmental policies based on poor science, The Science and Environmental Policy Project (SEPP) stands for objective science, based on hard evidence.

SEPP examines questionable governmental policies, no matter how popular, to determine if policies are based on the rigorous application of the scientific method and not just a passing fad. SEPP’s mission is to educate politicians, the media, and the public on the importance of scientific rigor in establishing environmental and related policies, such as energy.

JunkScience.com

Since April 1, 1996, JunkScience.com has led the fight against junk science.

EIKE

In German.

Fraser Institute

In Canada.  Our mission is to improve the quality of life for Canadians, their families, and future generations by studying, measuring, and broadly communicating the effects of government policies, entrepreneurship, and choice on their well-being.

Watts Up With That?
The world’s most viewed site on global warming and climate change

Climate Skeptic
A site originally started to help report climate developments in layman’s terms, particularly the science of the skeptic’s position.

Global Warming.org
Globalwarming.org is the blog of the Cooler Heads Coalition, an ad hoc coalition of more than two dozen free market and conservative non-profit groups in the U. S. and abroad that question global warming alarmism and oppose energy-rationing policies.

Climate Depot
Climate Clearinghouse to Challenge Mainstream Media’s Eco-Reporting. Run by Marc Morano, former Communications Director for the Senate Environment & Public Works Committee and senior aide, speechwriter, and climate researcher for Senator James Inhofe (R-OK). They are #6 on Mother Jones Dirty Dozen of Climate Change Denial.

James Delingpole — Telegraph Blogs
Climate skeptic James Delingpole’s blog at The Telegraph. Delingpole was named one of the top ten climate sceptics by International Business Times.

American Coalition for Clean Coal Electricity
The American Coalition for Clean Coal Electricity (ACCCE) is a partnership of the industries involved in producing electricity from coal. They are #3 on Mother Jones Dirty Dozen of Climate Change Denial.

Plants Need CO2
Our mission is to educate the public on the positive effects of additional atmospheric CO2 and help prevent the inadvertent negative impact to human, plant and animal life if we reduce CO2. They are #4 on Mother Jones Dirty Dozen of Climate Change Denial.

Christopher Booker — Telegraph Column
Christopher Booker, journalist and founding member of the Private Eye, has a column at The Sunday Telegraph. Booker was named one of the top ten climate sceptics by International Business Times.

American Petroleum Institute (A.K.A. Energy Citizens)
Energy Citizens is a creation of the American Petroleum Institute, the oil industry’s largest trade group. They are #5 on Mother Jones Dirty Dozen of Climate Change Denial.

Center for the Study of Carbon Dioxide and Global Change (A.K.A. The Idso Family)
The Center for the Study of Carbon Dioxide and Global Change was created to disseminate factual reports and sound commentary on new developments in the world-wide scientific quest to determine the climatic and biological consequences of the ongoing rise in the air’s CO2 content. They are #8 on Mother Jones Dirty Dozen of Climate Change Denial.

FreedomWorks
FreedomWorks members know that government goes to those who show up, and are leading the fight for lower taxes, less government, and more freedom. They are #9 on Mother Jones Dirty Dozen of Climate Change Denial.

Federation for American Coal, Energy and Security (A.K.A. FACES of Coal)
The Federation for American Coal, Energy and Security (FACES of Coal) is an alliance of people from all walks of life who are joining forces to educate lawmakers and the general public about the importance of coal and coal mining to our local and national economies and to our nation’s energy security.. They are #11 on Mother Jones Dirty Dozen of Climate Change Denial.

Institute for Energy Research (A.K.A. American Energy Alliance)
The American Energy Alliance (“AEA”) is a not-for-profit organization that engages in grassroots public policy advocacy and debate concerning energy and environmental policies. They are #12 on Mother Jones Dirty Dozen of Climate Change Denial.

Climate Etc.
Hosted by Judith Curry, Climate Etc. provides a forum for climate researchers, academics and technical experts from other fields, citizen scientists, and the interested public to engage in a discussion on topics related to climate science and the science-policy interface. Curry is Professor and Chair of the School of Earth and Atmospheric Sciences at the Georgia Institute of Technology and President (co-owner) of Climate Forecast Applications Network (CFAN).

Climate Audit
by Steve McIntyre. The main topic here is millennial multiproxy climate studies (criticism of the hockey stick model).

Roger Pielke Jr.’s Blog
Science, Innovation, Politics. Pielke Jr. is a professor of environmental studies at the Center for Science and Technology Policy Research at the University of Colorado at Boulder.

Bishop Hill
A dissentient afflicted with the malady of thought by Andrew William Montford.

Friends of Science
Our Goal: To educate the public about climate science and through them bring pressure to bear on governments to engage in public debates on the scientific merits of the hypothesis of human induced global warming and the various policies that intend to address the issue.
Our Opinion: It is our opinion that the Sun is the main direct and indirect driver of climate change.