It is an excellent essay. If you read through the answers to many of the environmental questions on Yahoo! Answers, it will help you identify the "deniers", who are plentiful.Climate science has probably been the subject of more skepticism than any other subject in history. Science values its skeptics as they make science strong by pointing out areas that need more investigation, and sometimes they make valuable contributions. When Richard Muller questioned NASA's temperature records, he evaluated all 6 billion pieces of weather station data, and came to the conclusion that the temperature record was accurate. When O'Donnell doubted Steig’s work showing Antarctica was warming, he re-analyzed the data and found that indeed Antarctica, the coldest place on Earth, was getting warmer. Skeptics are expected to follow the methodologies and the ethics of science and to subject their work to peer review, have reproducible data, have their work stand up to critical examination of other experts, and divulge conflicts of interest.
Climate science has a large number of deniers who claim to be skeptics, but they do not meet the above criteria. They received money from sources that pay them to be skeptical and when research shows them wrong, they keep repeating their skeptical comments. For example, Anthony Watts was quite critical of the data that was obtained from weather stations and started a Surface Station Project to examine the data. The American geophysical Union took his skepticism seriously and did a thorough study on the weather stations, finding the data was reliable. They generously offered Watts a chance to participate in the research, but he refused. And though the question has been answered, he is still repeating the same criticisms and collecting substantial donations to continue his project. There are many skeptics like Watts, who received generous grants from think tanks and interested parties, not for fundamental research, but to come up with ideas to cast doubt on the IPCC, climate research, and legitimate scientists.