One of the key players in Merchants of Doubt was a guy named Michael Shermer, who writes for Unscientific Antiamerican magazine. He claimed to be a converted former skeptic, based on finding out that glaciers are melting and sea level is rising.
Had this “scientist” done any actual research, he would have known that these things have been going on for a very long time, and are not evidence of global warming. Glaciers were melting during NASA’s coldest year ever.
Sea level rose much faster prior to 8,000 years ago.
A real scientist would know that you can’t determine a change from one point in time. You have to look at whether the trends have changed over time.