In September 2005, Crichton testified on climate change before the U.S. Senate Committee on Environment and Public Works. Crichton opined that human activities are not significantly contributing to global warming, and encouraged U.S. lawmakers to more closely examine the methodology of climate science before voting on policy.

Crichton's views on climate change are frequently criticized as pseudoscience.

https://en.wikipedia.org/wiki/Michael_Crichton#Politics

This novel received criticism from climate scientists, science journalists and environmental groups for inaccuracies and misleading information. Sixteen of 18 US climate scientists interviewed by Knight Ridder said the author was bending scientific data and distorting research.

Several scientists whose research had been referenced in the novel stated that Crichton had distorted it in the novel. Peter Doran, leading author of the Nature paper,[30] wrote in the New York Times: "our results have been misused as 'evidence' against global warming by Michael Crichton in his novel State of Fear".

https://en.wikipedia.org/wiki/State_of_Fear#Criticism_from_scientific_community