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10 thoughts on “Two Mile Time Machine

  1. Sydney Hedberg Sydney Hedberg says:

    In this captivating novel Richard B Alley one of the world’s leading climate scientists tells the story of Earth’s climate history that has been revealed from studying Greenland’s ice cores He draws on his research to explain first how ice cores can be indicative of climate history second how different events have large capabilities to alter Earth’s climate and third what these findings could possibly mean for our future By extensively studying the ice layers of a two mile long ice core Alley and his research team determined a relative history of Earth's temperatures for the past 100000 years They additionally discovered patterns of atmospheric concentrations throughout history as gas bubbles are trapped within ice layers Alley explains their main findings from this extensive study Their two main discoveries include 1 that past climate has been much variable with significantly larger climate shifts than those experienced in the industrial agricultural era and 2 that climate usually remains relatively stable unless there is a phenomenon ‘pushing’ climate to change commonly causing a rapid jump in climatic conditions rather than a gradual one Alley concludes by describing the futuristic implications of their study He examines the possibility of an Atlantic conveyor shutdown which would largely impact worldwide temperature distributions He additionally points out that the observed increase in carbon dioxide concentrations alone are likely only going to increase global temperature by 1℃ However he describes the how various positive feedback loops within Earth's system can amplify this temperature increase Above all Alley stresses the uncertainty behind his predictions He remains certain about the evidence that his research team provides but acknowledges that they are not certain about its implications in our future This strengthens his credibility because while he is supporting his predictions with evidence he is honest that it cannot be known for certain Richard Alley conveys this information in an effective way to a non scientific audience opening my eyes to what this study shows about the past as well as possible futuristic implications He does a good job at explaining the meaning behind specific scientific terms and uses a minimal amount of scientific jargon This allows the book to be directed at a wider audience not limited to scientific experts Additionally Alley does a good job at addressing contrarian viewpoints and refuting them with evidence My main criticism of the book is that Alley delves into a lot of detail on certain topics while seemingly skimming over others Overall I believe the book conveys a meaningful story about Earth’s climate past and present Providing a look into the past that unravels the climate history of Earth The Two Mile Time Machine encourages and facilitates thought on what the future climate of our planet will look like and what implications this will have on our lives for many years to come

  2. Kyra Wolf Kyra Wolf says:

    This is the best nontechnical explanation of climate science that I've ever read

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Two Mile Time Machine ❴Read❵ ➳ Two Mile Time Machine Author Richard B. Alley – In the 1990s Richard B Alley and his colleagues made headlines with the discovery that the last ice age came to an abrupt end over a period of only three years In The Two Mile Time Machine Alley tells In the s Richard B Alley and his colleagues made headlines with the discovery that the last ice age came to an abrupt end over a period of only three years In The Two Mile Time Two Mile PDF or Machine Alley tells the fascinating history of global climate changes as revealed by reading the annual rings of ice from cores drilled in Greenland He explains that humans have experienced an unusually temperate climate compared to the wild fluctuations that characterized most of prehistory He warns that our comfortable environment could come to an end in a matter of years and tells us what we need to know in order to understand and perhaps overcome climate changes in the futureIn a new preface the author weighs in on whether our understanding of global climate change has altered in the years since the book was first published what the latest research tells us and what he is working on next.