f11f2692_limate_Science___ThinkProgress__One_Liner
[0] 70 [Skeptic Argument] “CO2 effect is saturated” [Paragraph] If the CO2 effect was saturated, adding more CO2 should add no additional greenhouse effect. However, satellite and surface measurements observe an enhanced greenhouse effect at the wavelengths that CO2 absorb energy. This is empirical proof that the CO2 effect is not saturated. [One Liner] 
Direct measurements find that rising CO2 is trapping more heat.
99 One-Liners Rebutting Denier Talking Points — With Links To The Full Climate Science | ThinkProgress
One Liner