overpopulation book or, thanos daily planner

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but seriously, i was skimming the book of faces, and i recall an interview by an author about overpopulation, 

and the interview and reviews looked awesome. 

but of course, i can't recall the name of the book, or find the clip. 

all i remember is that the book cover was 'sky blue'. 

not much help, but i'm sure one of you book worms may know which book i'm talking about. 

at least, i hope so. 

please help. 

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still looking 

[ELDEMONIO]

So the author was Thanos?

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iono?