If you don't remember the past you will repeat it
A long time ago, Jack Barrett perpetrated ignorance about the greenhouse effect that is still relied on today by the know nothing wanna know less crowd. There were several replies, but among them, John Houghton had a brief and very useful comment explaining the origin of the Greenhouse effect. Something of current interest.
A further point which Barrett makes is to suggest that because most of the absorption by carbon dioxide of radiation from the surface occurs within 30 m of the surface, the enhanced greenhouse warming due to increase of carbon dioxide in the lower atmosphere is negligible. In fact, most of the enhanced greenhouse effect occurs not because of changed absorption of radiation from the surface (although some change does occur in the wings of the carbon dioxide band where absorption is weaker) but because as the concentration of carbon dioxide in the atmosphere increases, the average height (around 6 km) from which carbon dioxide emits radiation to space also increases. Since atmospheric temperature in the lower atmosphere falls with altitude, if nothing changes other than the amount of carbon dioxide, the amount of radiation to space is reduced. For atmospheric carbon dioxide this reduction can be accurately calculated; for doubled atmospheric concentration it is about 4 W m-2. To restore the Earth’s energy balance the temperature throughout the lower atmosphere has to increase - hence the enhanced greenhouse effect [ 1].Thanks to Atmoz who brought the current to and fro to Eli's attention and Lubos Motl who in the course of arguing his way to this conclusion reminded us of Houghton's letter.