"[10] In a letter of complaint to ABC News, Singer said their piece used "prejudicial language, distorted facts, libelous insinuations, and anonymous smears".

[11][12] Singer also said that the anonymous scientists, "are easily identified as the well-known global warming zealots Jim Hansen, Michael Oppenheimer and Steve Schneider.

The declaration says "assertions of a supposed 'consensus' among climate experts are false" and recommends "that all taxes, regulations, and other interventions intended to reduce emissions of CO2 be abandoned forthwith.

"[13] It was signed by attendees at the 2008 conference, described by libertarian/conservative think-tank the Heartland Institute as consisting of "world leading climate scientists, economists, policymakers, engineers, business leaders, medical doctors, as well as other professionals and concerned citizens".

[14] Signatories include Fred Singer, Anthony Watts, Piers Corbyn, Ian Plimer, Robert M. Carter, Roy Spencer, David Bellamy, and Joe Bastardi.

[18][19] Other speakers included Jack Schmitt, Richard Lindzen, Stephen McIntyre, Willam Gray, Tom McClintock[20] and Christopher Booker.

"[26] Due to a controversial billboard ad run by the Heartland Institute leading up to the conference, there was a drop in attendance and expected speakers Donna Laframboise and Ross McKitrick cancelled in protest.

The conference was promoted as featuring "the courageous men and women who spoke the truth about climate change during the height of the global warming scare.