If you are one of "a great many people" who
were once believers in catastrophic GW [global warming] and are now skeptical.
I keep reading variations of this line expressed by readers on various blogs, and it's purely anecdotal. Also, a "great many" people who converted from believers to skeptics because of why? I've also heard such an anecdotal assertion expressed this way: that a great many people who believed in AGW are now skeptics. Is it both? Some clarification please, and how about some hard numbers?