Happy New Year to you all.
Below is a link to a very interesting lecture by Dr William Happer in which he completely debunks the idea that increases in the greenhouse effect caused by CO2 emissions could lead to dangerous increases in the temperature of the Earth's surface. It is an hour long and to start with he goes over a lot of basic principles. The most important section is at about 24 minutes in where he looks at a graph showing the amount of radiation which escapes to space and the effect of doubling the amount of CO2 on this. Even if you haven't got an hour to watch the whole lecture, I recommend you look at that part.