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Weird Life: The Search for Life That Is Very, Very Different from Our Own
     

Weird Life: The Search for Life That Is Very, Very Different from Our Own

4.5 4
by David Toomey
 

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“Weird indeed, and not a little wonderful.”—Nature
In the 1980s and 1990s, in places where no one thought it possible, scientists found organisms they called extremophiles: lovers of extremes. There were bacteria in volcanic hydrothermal vents on the ocean floor, single-celled algae in Antarctic ice floes, and fungi in the cooling pools of

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Weird Life: The Search for Life That Is Very, Very Different from Our Own 4.3 out of 5 based on 0 ratings. 3 reviews.
leopardiNJ More than 1 year ago
Despite all the advances that biological science has made during the past two centuries, it has not been able to come up with completely satisfying answers to two of its most fundamental questions - "Just what is life anyway?" and, "What are the physical limits within which life can survive?" Especially during the latter half of the 20th century and continuing right up to the present day, discoveries have repeatedly overturned or at least forced reconsideration of the definition of life and extensions of the boundaries of life's physical domain. Weird Life provides an excellent review of the state of what we know about the basic nature of living organisms and an up-to-date survey of every possible limiting, extreme physical environment in which life has been found. Organisms have been discovered thriving or surviving at temperatures well below the freezing and far above the boiling points of water; at pressures of thousands of psi and in the vacuum of space; in clouds; in deep, tight rock formations; just about anywhere anyone has bothered to look. And much of that newly discovered life can be categorized as "weird" - having evolved physical and biochemical characteristics very different from those of common ordinary Earth surface or marine organisms. So far, that extreme, "weird" life, despite its unique characteristics, still bears the genetic and biochemical fingerprints that clearly link it to "ordinary", familiar life. But, if life can survive under such extreme conditions, could truly weird (employing alternative chemistries, alternative energy sources, alternative physics, even) organisms be living among us or on distant worlds? Weird life so different from what we know that we might not even be capable of recognizing it? Unfortunately, the subject matter lends itself to some fairly wild speculation. Once the author, David Toomey, leaves the realm of carbon biochemistry and ventures into realms, for example, defined by current theoretical physics, there appears to be little to define the limits of speculative life in parallel universes with which we can never interact or even know to exist. Life as a game played on a cosmic scale where Earth's organisms are simply chess pieces? How many aliens can you fit on the head of a pin? This type of speculation is not science and leads nowhere - except, perhaps as fodder for science fiction. It detracts from the valid discussion of life-as-we-know-it's limits. The author would have been better off devoting the latter part of Weird Life to a discussion of the theoretical boundaries of possible alternative biochemistries. Perhaps too daunting a task for the general reader, but more likely to yield useful insights into the nature of this thing we call "life". A Glossary, adequate notes, a bibliography, a few images and an index round out this work. Richard R. Pardi Environmental Science William Paterson University
Anonymous More than 1 year ago
Anonymous More than 1 year ago