The theory of anthropogenic climate warming, i.e. resulting from the accumulation of greenhouse gases in the atmosphere, carbon dioxide in particular, has produced the economic and political media frenzy we know, unprecedented in the history of science. On the other hand, there are those who oppose who are skeptical about this hypothesis. Arguing natural climate variability observed in the past, including the recent past regarding the Little Ice Age, they refute alarmist predictions that are becoming harder to sustain as the temperature of the planet has no longer increased over the last fifteen years, while the concentration of carbon dioxide is soaring.
