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Books > Science & Mathematics > Biology, life sciences > Life sciences: general issues > Evolution
When Michael J. Behe's first book, Darwin's Black Box, was
published in 1996, it launched the intelligent design movement.
Critics howled, yet hundreds of thousands of readers -- and a
growing number of scientists -- were intrigued by Behe's claim that
Darwinism could not explain the complex machinery of the cell. Now,
in his long-awaited follow-up, Behe presents far more than a
challenge to Darwinism: He presents the evidence of the genetics
revolution -- the first direct evidence of nature's mutational
pathways -- to radically redefine the debate about Darwinism. How
much of life does Darwin's theory explain? Most scientists believe
it accounts for everything from the machinery of the cell to the
history of life on earth. Darwin's ideas have been applied to law,
culture, and politics. But Darwin's theory has been proven only in
one sense: There is little question that all species on earth
descended from a common ancestor. Overwhelming anatomical, genetic,
and fossil evidence exists for that claim. But the crucial question
remains: How did it happen? Darwin's proposed mechanism -- random
mutation and natural selection -- has been accepted largely as a
matter of faith and deduction or, at best, circumstantial evidence.
Only now, thanks to genetics, does science allow us to seek direct
evidence. The genomes of many organisms have been sequenced, and
the machinery of the cell has been analyzed in great detail. The
evolutionary responses of microorganisms to antibiotics and humans
to parasitic infections have been traced over tens of thousands of
generations. As a result, for the first time in history Darwin's
theory can be rigorously evaluated. The results are shocking.
Although it can explain marginal changes in evolutionary history,
random mutation and natural selection explain very little of the
basic machinery of life. The edge of evolution, a line that defines
the border between random and nonrandom mutation, lies very far
from where Darwin pointed. Behe argues convincingly that most of
the mutations that have defined the history of life on earth have
been nonrandom. Although it will be controversial and stunning,
this finding actually fits a general pattern discovered by other
branches of science in recent decades: The universe as a whole was
fine-tuned for life. From physics to cosmology to chemistry to
biology, life on earth stands revealed as depending upon an endless
series of unlikely events. The clear conclusion: The universe was
designed for life.
An Open Letters Review Best Book of the Year A leading expert in
animal behavior takes us into the wild to better understand and
manage our fears. Fear, honed by millions of years of natural
selection, kept our ancestors alive. Whether by slithering away,
curling up in a ball, or standing still in the presence of a
predator, humans and other animals have evolved complex behaviors
in order to survive the hazards the world presents. But, despite
our evolutionary endurance, we still have much to learn about how
to manage our response to danger. For more than thirty years,
Daniel Blumstein has been studying animals’ fear responses. His
observations lead to a firm conclusion: fear preserves security,
but at great cost. A foraging flock of birds expends valuable
energy by quickly taking flight when a raptor appears. And though
the birds might successfully escape, they leave their food source
behind. Giant clams protect their valuable tissue by retracting
their mantles and closing their shells when a shadow passes
overhead, but then they are unable to photosynthesize, losing the
capacity to grow. Among humans, fear is often an understandable and
justifiable response to sources of threat, but it can exact a high
toll on health and productivity. Delving into the evolutionary
origins and ecological contexts of fear across species, The Nature
of Fear considers what we can learn from our fellow animals—from
successes and failures. By observing how animals leverage alarm to
their advantage, we can develop new strategies for facing risks
without panic.
Unlike some other reproductions of classic texts (1) We have not
used OCR(Optical Character Recognition), as this leads to bad
quality books with introduced typos. (2) In books where there are
images such as portraits, maps, sketches etc We have endeavoured to
keep the quality of these images, so they represent accurately the
original artefact. Although occasionally there may be certain
imperfections with these old texts, we feel they deserve to be made
available for future generations to enjoy.
Unlike some other reproductions of classic texts (1) We have not
used OCR(Optical Character Recognition), as this leads to bad
quality books with introduced typos. (2) In books where there are
images such as portraits, maps, sketches etc We have endeavoured to
keep the quality of these images, so they represent accurately the
original artefact. Although occasionally there may be certain
imperfections with these old texts, we feel they deserve to be made
available for future generations to enjoy.
There is increasing evidence that the structure and functioning of
ecological communities and ecosystems are strongly influenced by
flexible traits of individuals within species. A deep understanding
of how trait flexibility alters direct and indirect species
interactions is crucial for addressing key issues in basic and
applied ecology. This book provides an integrated perspective on
the ecological and evolutionary consequences of interactions
mediated by flexible species traits across a wide range of systems.
It is the first volume synthesizing the rapidly expanding research
field of trait-mediated indirect effects and highlights how the
conceptual framework of these effects can aid the understanding of
evolutionary processes, population dynamics, community structure
and stability, and ecosystem function. It not only brings out the
importance of this emerging field for basic ecological questions,
but also explores the implications of trait-mediated interactions
for the conservation of biodiversity and the response of ecosystems
to anthropogenic environmental changes.
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