Sensitivity of Earth's climate to atmospheric CO2? *

How sensitive is the Earth's climate to variations in atmospheric CO2? (#34738)

How can CO2 stay up in the atmosphere? *º

The molar mass of air is about 29 g/mol, the molar mass of CO2 is about 44 g/mol. How can CO2 then be a greenhouse gas staying up in the atmosphere and reflecting the heat? (#37708)

There is sufficient evidence that temperature is rising. *

Some of the skeptics argue that longer-term evidence that modern temperatures are higher than they have been for hundreds or thousands of years is actually too flaky to be meaningful. However, the use of the pejorative word "flaky" is inadequate to refute many thousands of scientific observations. (#41668)

Why are night temperatures still significantly lower? *

If a greenhouse effect exists, why are night temperatures still significantly lower than daytime temperatures? (#37894)

Case for significant anthropogenic forcing remains unclear *

The case for significant anthropogenic forcing of the climate remains unclear. (#5041)

Case for significant anthropogenic forcing is clear *º

There is credible evidence of significant anthropogenic forcing of climate change. (#3387)