I was grimly amused by a thought along the lines of Asimov's "Nightfall." Researchers started to piece together evidence of a million years of rain driven by CO2 emissions, just as the really big storms started...
Book? As I recall, "Nightfall" was a novelette length story, published in the book, "Nightfall and Other Stories". Or are you are referring to the expanded book length version written by Asimov and Robert Silverberg?