A review of A Most Improbable Journey: A Big History of Our Planet and Ourselves by Walter Alvarez
@@@@ (4 out of 5)
UC Berkeley professor Walter Alvarez tackles the emerging field of Big History from his perspective as a geologist, viewing himself as “a historian of the Earth.” In A Most Improbable Journey, he writes about the universal context in which human life has emerged.
A planet in a constant state of flux
Beginning with the Big Bang and rushing through the intervening 13.8 billion years at top speed, he focuses on the geological processes through which the Earth was formed and progressively re-formed in ways that have determined the course of human events to this day.
“The topography and climate of continents,” he writes, have controlled the pattern of settlement and the lines of communication throughout history; resources are distributed in an irregular way across the continents; and land warfare is carried out on a geographical chessboard. The geography of the oceans has determined routes of exploration, trade, and migration and has set the stage for naval warfare.”
And all this, he emphasizes, is the result of the particular configuration of the continents at this moment in geological history. Because of continental drift, the shape and distribution of both land and sea have radically changed numerous times since the Earth was created 4.5 billion years ago. For example, to cite just two minor examples of the Earth’s changeability, he notes that “California is further away from Utah than it used to be.” And the coast of Northern California once extended to what we know today as the Farallones Islands. If your taste runs to nonfiction, you may well find this book as enjoyable as the best thriller.
An unusual contribution to Big History
The discipline of Big History is less than three decades old. Founded by David Christian, an American historian then teaching in Australia, its mission is to transcend the boundaries of written history and help us see ourselves in the context of an inconceivably vast and complex universe. Instead of focusing on the mere 5,000 years of recorded history, Big Historians typically direct our attention far backwards to the beginning of time itself. However, in most treatments, Big History explores the astronomical, physical, chemical, and geological realities of our past only as prologue to an abbreviated world history. Walter Alvarez takes a different approach in A Most Improbable Journey. Though he frequently dips into other scientific disciplines, his focus throughout is on the ways in which geological science can help us understand the shape our lives and the character of the planet we share.
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