My position is to defend science, and defend quality of life – i.e. the environment, the political environment and the economic environment.
Most of the nonsense is on the alarmist side of the debate, but there is plenty on the skeptic side too.
The greenhouse effect is basic, fundamental science – like gravity.
The sun strikes the Earth’s surface, and warms it. This causes the Earth to radiate longwave radiation up through the atmosphere. Some of this radiation is captured by molecules of greenhouse gas, which causes the air to warm. Warm greenhouse gases in turn radiate more longwave radiation, half of which radiates downwards towards Earth and warms the Earth’s surface further.
This does not change the energy flux in the atmosphere. The energy flux moving upwards (via reflection, radiation, convection, evaporation, condensation, etc.) is always going to average out to be equal to the amount of incoming solar radiation. The greenhouse effect simply elevates temperatures above what they would be without greenhouse gases. It behaves like an insulator. It is not a heat source and does not violate the laws of thermodynamics. People who make that argument are completely clueless.
The vast majority of this warming is near the Earth’s surface, and is due to H2O molecules, rather than CO2. Forecasts of large amounts of CO2 warming, are not based on any legitimate science.