While reading through the Pullitzer Prize-winning 'The Sixth Extinction' (TSE), on the ravages wrought by the human race on our natural environment (almost on the same scale as those caused by natural disasters millions of years back, which resulted in the five known extinctions of life) like dwindling biodiversity due to ocean acidification caused by carbon emissions, it struck me that the scales of time the book talks about are akin to those described in Carl Sagan's 'Cosmos'. Of course, both the timelines and the physical span covered by 'Cosmos' are much larger/longer in scale (billions of years instead of bare millions), and Sagan covers an eclectic mix of human knowledge (Chapter X for instance, which I just finished, closes with Sagan's musings on the mythical 'fourth dimension'!).
Actually, the book closer to TSE in its sweep is perhaps the renowned 'Sapiens', Harari's groundbreaking tome on the human race (which I finished a few months back). With the same theme of human race having caused extinction of so many of the ancient species of flora and fauna. However, while TSE sticks to a central theme of environmental degradation, 'Sapiens' takes into its fold a much larger swathe of human history, archeology, economics and so many other domains. In its span, as such, 'Sapiens' is closer to 'Cosmos'.
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