All bodily activity is the result of the interplay of vastly complex physiological processes, and all of these processes depend on temperature. For insects, the struggle to keep body temperature within a suitable range for activity and competition is often a matter of life and death.
A few studies of temperature regulation in butterflies can be found dating back to the late 1800s, but only recently have scientists begun to study the phenomenon in other insects. In The Thermal Warriors Bernd Heinrich explains how, when, and in general what insects regulate their body temperature and what it means to them. As he shows us, the ingenuity of the survival strategies insects have evolved in the irreducible crucible of temperature is astonishing: from shivering and basking, the construction of turrets (certain tiger beetles), and cooling with liquid feces to stilting (some desert ants and beetles), "panting" in grasshoppers and "sweating cicada," and counter- and alternating-currents of blood flow for heat retention and heat loss.
In The Thermal Warriors Heinrich distills his great reference work, The Hot-Blooded Insects, to its essence: the most significant and fascinating stories that illustrate general principles, all conveyed in the always engaging prose we have come to expect from this author.
Paul Shepard is one of the most profound and original thinkers of our time. He has helped define the field of human ecology, and has played a vital role in the development of what have come to be known as environmental philosophy, ecophilosophy, and deep ecology -- new ways of thinking about human-environment interactions that ultimately hold great promise for healing the bonds between humans and the natural world. Traces of an Omnivore presents a readable and accessible introduction to this seminal thinker and writer.
Throughout his long and distinguished career, Paul Shepard has addressed the most fundamental question of life: Who are we? An oft-repeated theme of his writing is what he sees as the central fact of our existence: that our genetic heritage, formed by three million years of hunting and gathering remains essentially unchanged. Shepard argues that this, "our wild Pleistocene genome," influences everything from human neurology and ontogeny to our pathologies, social structure, myths, and cosmology.
While Shepard's writings travel widely across the intellectual landscape, exploring topics as diverse as aesthetics, the bear, hunting, perception, agriculture, human ontogeny, history, animal rights, domestication, post-modern deconstruction, tourism, vegetarianism, the iconography of animals, the Hudson River school of painters, human ecology, theoretical psychology, and metaphysics, the fundamental importance of our genetic makeup is the predominant theme of this collection.
As Jack Turner states in an eloquent and enlightening introduction, the essays gathered here "address controversy with an intellectual courage uncommon in an age that exults the relativist, the skeptic, and the cynic. Perused with care they will reward the reader with a deepened appreciation of what we so casually denigrate as primitive life -- the only life we have in the only world we will ever know."
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