According to popular belief, recent global warming has been caused largely by greenhouse gases, primarily CO2, accruing in the atmosphere, and man is responsible for most of the similar to 120 ppm increase in CO, over the last 100 years. This article cites a number of recent peer-reviewed scientific papers, and finds that contrary arguments by a growing body of scientists are generally supported by better empirical data than those that favour the `anthropogenic warming' hypothesis. These arguments invoke the effects of solar irradiance and ocean atmosphere interactions, both of which have been shown to have warming effects at least as great as those claimed for CO,, and to be based on sound, well-understood scientific theory Furthermore, the global warming models used by the Intergovernmental Panel on Climate Change (IPCC) and others have in some cases been shown to be incorrect and contrary to current temperature statistics. For these and other reasons, the CO2-driven, anthropogenic warming hypothesis is regarded by many as suspect and lacking in empirical evidence. The difficulty of refuting this popular hypothesis is exacerbated by the IPCC's United Nations mandate to advise governments on the severity of man-made global warming, a mandate that they have followed faithfully, encouraging the emergence of a large body of funded research that supports their view. This presents a problem for global society, as the human-caused warming scenario diverts attention from other, at least equally serious environmental impacts of our industrial society. Recently however, there appears to be a tilting of public opinion away from global warming alarmism, which may fundamentally affect the direction of the climate change debate.