Historians of science can benefit from thinking more deeply about land. Scholarly emphasis on the geographies of scientific knowledge has become pervasive since the “spatial turn” of the late 1990s. At the same time, the history of science has increasingly intersected with environmental history. Despite these growing connections, historians of science have been slow to embrace a core concern of environmental history: land. While space and place now have a rich literature in the historiography of science, land appears in histories (...) of science in more scattered, incidental ways – largely as a place where science may occur or be applied. More than just a unit of ground, land is analytically connected to a web of questions about labor, property, governance, identity, and environmental change explored by environmental historians, geographers, and political ecologists. This article examines what historians of science – particularly, but not exclusively, historians of the field and environmental sciences – have to gain by taking land more seriously. A reexamination of the Rain Forest Project (1962–1970), a radioecology study initiated by systems ecologist Howard Thomas Odum in what is today El Yunque National Forest, Puerto Rico, serves as a case in point. Viewing this field site as land reframes ecologists’ fieldwork as a form of land use, highlighting its place within regimes of land tenure, its connections with other communities’ uses of the land, and its persistent local legacies. (shrink)

The levels of different classes of mitochondrially encoded transcripts are developmentally regulated in sea urchin embryos, as a result of selection between mutually exclusive synthetic pathways. I propose a simple model to explain these observations, based on a dual role for mitochondrial ribosomes and translation factors in RNA synthesis as well as in translation. This effect may be exerted either at the transcriptional or post‐transcriptional level (or both), and is potentially generalizable to mammalian mtDNA and to other systems.

The history of physics ranges from antiquity to modern string theory. Since early times, human beings have sought to understand the workings of nature--why unsupported objects drop to the ground, why different materials have different properties, and so forth. The emergence of physics as a science, distinct from natural philosophy, began with the scientific revolution of the 16th and 17th centuries when the scientific method came into vogue. Speculation was no longer acceptable; research was required. The beginning of the 20th (...) century marks the start of a more modern physics. Physicists began to study the atom, with its electrons and its nucleus. Then they began to look at the fundamental question of the forces that hold the nucleus together and the particles that account for the natural forces. This book approaches the history of physics from a biographical point of view, considering people to be more interesting than things, and the combination of the two more interesting than the sum of the individual parts. After a brief overview of classical and modern physics, 336 one-page biographies of individuals who have made significant contributions to the field of physics are presented. (shrink)

Last year, we reported a new mechanism of DNA replication in mammals. It occurs inside mitochondria and entails the use of processed transcripts, termed bootlaces, which hybridize with the displaced parental strand as the replication fork advances. Here we discuss possible reasons why such an unusual mechanism of DNA replication might have evolved. The bootlace mechanism can minimize the occurrence and impact of single‐strand breaks that would otherwise threaten genome stability. Furthermore, by providing an implicit mismatch recognition system, it should (...) limit the occurrence of replication‐dependent deletions and insertions, and defend against invading elements. Such a mechanism may also limit attempts to manipulate the mammalian mitochondrial genome. (shrink)

We discuss our surgical philosophy concerning the subtle interplay between the size of the surgical margin taken and the resultant morbidity from ablative oncological. procedures, which is ever more evident in the treatment of head and neck malignancy. The extent of tissue resection is determined by the "trade off" between cancer control and the perioperative, functional and aesthetic morbidity and mortality of the surgery. We also discuss our dilemmas concerning recent minimally invasive endoscopic microsurgical. techniques for the trans-oral laser removal. (...) or co-ablation of aero-digestive tract tumours, which result in a minimal. surgical margin of oncological clearance. By a process of inductive argument as to the nature of the surgical margin, we consider whether the risks of taking a lesser margin with adjuvant therapy is justified by the attendant gain in reduced surgical morbidity and the possible costs in tumour control. (c) 2006 Elsevier Ltd. All rights reserved. (shrink)

Routledge is now re-issuing this prestigious series of 204 volumes originally published between 1910 and 1965. The titles include works by key figures such as C.G. Jung, Sigmund Freud, Jean Piaget, Otto Rank, James Hillman, Erich Fromm, Karen Horney and Susan Isaacs. Each volume is available on its own, as part of a themed mini-set, or as part of a specially-priced 204-volume set.

In what is clearly an important development related to research integrity and the protection of human research subjects, the U.S. government has instituted two new training requirements as a condition of receiving federal financial support. First, the National Institutes of Health is requiring, as a condition of funding, that key research personnel involved in human subject research complete education “in the protection of human subjects.” Evidence that key personnel have completed this training must be provided in NIH grant applications or (...) contract proposals.The NIH education policy will eventually be superseded by a more broadly applicable instructional policy for the “responsible conduct of research,” which will be promulgated by the Department of Health and Human Service's Office of Research Integrity and the Public Health Service. The instructional policy will apply to all persons engaged in any research or research training with PHS support. Presently, the only version of the policy is in draft form. (shrink)

We all have internal models (or maps) that represent the world. But all models/maps distort. Given the complexity of the world and the psychological limits to our representational ability, we must do with simplified models that work in those situations that are most important for us. But since our wants and situations differ, so will our models. When we encounter people with different models, we may try to convert them, but such conversion is unlikely if their models serve their wants (...) and situations. Once we give up on conversion, we may look for those mutually beneficial accommodations that are possible even when models differ. (shrink)

The influence of Kant's philosophy has been, and continues to be, so profound and so widespread as to have become imperceptible. Philosophical inquiry within both the ‘analytic’ and the ‘continental’ traditions is unthinkable without the lexical and conceptual resources bequeathed by Kant. Even outside philosophy, in the humanities, social sciences and natural sciences, Kantian concepts and structures of argument are ubiquitous. Anyone practicing literary or social criticism is contributing to the Kantian tradition; anyone reflecting on the epistemological implications of their (...) work will find themselves doing so within parameters established by Kant. Indeed, many contemporary debates, whether in aesthetics, literary or political theory, show a peculiar tendency to mutate into disputes in Kant exegesis. All in all, in the less than 200 years since the death of its author, Kantian philosophy has established itself as an indispensable point of intellectual orientation. (shrink)

The wrong kind of reason (WKR) problem is a problem for attempts to analyze normative properties using only facts about the balance of normative reasons, a style of analysis on which the ‘Reasons First’ programme depends. I argue that this problem cannot be solved if the orthodox view of reasons is true --- that is, if each normative reason is numerically identical with some fact, proposition, or state-of-affairs. That’s because solving the WKR problem requires completely distinguishing between the right- and (...) wrong-kind reasons for an attitude. I argue that some facts give both right- and wrong-kind reasons for an attitude. Consequently, no such distinction between the two types of reasons is complete if reasons are facts or the like. I conclude by suggesting that reasons and facts are related by constitution, not identity. (shrink)

Creativity is a popular but heterogeneous word in educational parlance these days. By looking at a selection of recent discourses that refer to creativity to sustain their positions, the paper suggests that two key themes emerge, both with questionable assumptions. Romantic individualists would return us to a naïve bygone age of authentic self-expression, while politicians and economists would use the term instrumentally by binding it to the future needs of the workforce without questioning substantive issues. Cultural theories of creativity indicate (...) pathways out. (shrink)

Many authors, including Derek Parfit, T. M. Scanlon, and Mark Schroeder, favor a “reasons-first” ontology of normativity, which treats reasons as normatively fundamental. Others, most famously G. E. Moore, favor a “value-first” ontology, which treats value or goodness as normatively fundamental. Chapter 10 argues that both the reasons-first and value-first ontologies should be rejected because neither can account for all of the normative reasons that, intuitively, there are. It advances an ontology of normativity, originally suggested by Franz Brentano and A. (...) C. Ewing, according to which fittingness is normatively fundamental. The normative relation of fittingness is the relation in which a response stands to an object when the object merits—or is worthy of—that response. The author argues that his “fittingness-first” ontology is no less parsimonious than either the reasons- or the value-first ontology, but it can plausibly accommodate the existence of all the normative reasons there are. It therefore provides a superior ontology of normativity. (shrink)

Single‐stranded DNA‐protein complex (T‐complex) is proposed to mediate T‐DNA transfer from Agrobacterium to plant cells. A novel model for transfer is presented which incorporates features of both bacterial conjugation and viral infection. Specific protein components of the T‐complex, its ultrastructure and possible functions in the plant cell are discussed.

Childhood adversity is associated with altered or dysregulated stress reactivity; these altered patterns of physiological functioning persist into adulthood. Evidence from both preclinical animal models and human neuroimaging studies indicates that early life experience differentially influences stressor-evoked activity within central visceral neural circuits proximally involved in the control of stress responses, including the subgenual anterior cingulate cortex (sgACC), paraventricular nucleus of the hypothalamus (PVN), bed nucleus of the stria terminalis (BNST) and amygdala. However, the relationship between childhood adversity and the (...) resting-state connectivity of this central visceral network remains unclear. To this end, we examined relationships between childhood threat and childhood socioeconomic deprivation, the resting-state connectivity between our regions of interest (ROIs), and affective symptom severity and diagnoses. We recruited a transdiagnostic sample of young adult males and females (n= 100; mean age = 27.28,SD= 3.99; 59 females) with a full distribution of maltreatment history and symptom severity across multiple affective disorders. Resting-state data were acquired using a 7.2-min functional magnetic resonance imaging (fMRI) sequence; noted ROIs were applied as masks to determine ROI-to-ROI connectivity. Threat was determined by measures of childhood traumatic events and abuse. Socioeconomic deprivation (SED) was determined by a measure of childhood socioeconomic status (parental education level). Covarying for age, race and sex, greater childhood threat was significantly associated with lower BNST-PVN, amygdala-sgACC and PVN-sgACC connectivity. No significant relationships were found between SED and resting-state connectivity. BNST-PVN connectivity was associated with the number of lifetime affective diagnoses. Exposure to threat during early development may entrain altered patterns of resting-state connectivity between these stress-related ROIs in ways that contribute to dysregulated neural and physiological responses to stress and subsequent affective psychopathology. (shrink)