This paper gives two complete and elementary proofs that if the speed of light over closed paths has a universal value c, then it is possible to synchronize clocks in such a way that the one-way speed of light is c. The first proof is an elementary version of a recent proof. The second provides high precision experimental evidence that it is possible to synchronize clocks in such a way that the one-way speed of light has a (...) universal value. We also discuss an old incomplete proof by Weyl which is important from an historical perspective. (shrink)

The clock hypothesis of relativity theory equates the proper time experienced by a point particle along a timelike curve with the length of that curve as determined by the metric. Is it possible to prove that particular types of clocks satisfy the clock hypothesis, thus genuinely measure proper time, at least approximately? Because most real clocks would be enormously complicated to study in this connection, focusing attention on an idealized light clock is attractive. The present paper (...) extends and generalized partial results along these lines with a theorem showing that, for any timelike curve in any spacetime, there is a light clock that measures the curve’s length as accurately and regularly as one wishes. (shrink)

The clock hypothesis is taken to be an assumption independent of special relativity necessary to describe accelerated clocks. This enables to equate the time read off by a clock to the proper time. Here, it is considered a physical system–the light clock–proposed by Marzke and Wheeler. Recently, Fletcher proved a theorem that shows that a sufficiently small light clock has a time reading that approximates to an arbitrary degree the proper time. The clock (...) hypothesis is not necessary to arrive at this result. Here, one explores the consequences of this regarding the status of the clock hypothesis. (shrink)

The light clock (a photon undergoing successive reflections between two particle mirrors a fixed distance apart) has commonly been used as a theoretical confirmation of the special-relativistic slowing of clock rates. In order to obtain that result one must describe the clock photon in a system moving relatively to the clock. However, contradictory frequency transformations for the photon, as observed from the mirrors, are then predicted by relatively moving observers. A correct and consistent analysis utilizes (...) the Lorentz-invariant relative velocity and distance between the mirrors. An invariant time period is also then involved; a parallel is drawn between it and the invariance of cosmic time for internal processes in distant systems. Considering that space-time and momentum-energy are described by conjugate 4-vectors, it is conjectured that a time transformation occurs only in association with a transformation of energy. (shrink)

During a transverse acceleration of a light clock from rest, the mirrors must be tilted so as to retain the light pulse. The mirrors therefore have a normal velocity which increases the frequency of the pulse at each reflection. If a mirror is annihilated, the frequency of the escaping pulse, as a result of many reflections, is that of the relativistic Doppler effect. This holds for any acceleration, if the Fitzgerald contraction is assumed, thereby furnishing a new (...) mechanism for such frequencies. The traditional mechanism, in which the source (subject to the time dilation) generates a pulse modulated by the source motion, is therefore not a unique explanation of the Doppler effect. The new mechanism permits the speculation that radiation preexists in atomic sources, rather than being generated at the instant of release. (shrink)

In a way similar to classical mechanics where we have the concept of inertial time as expressed in the motions of bodies, in the theory of relativity we can regard the inertial time as the only notion of time at play. The inertial time is expressed also in the propagation of light. This gives rise to a notion of clock—the light clock, which we can regard as a notion derived from the inertial time. The light (...) clock can be seen as a solution of the theory, which complies with the requirement that a clock to be so must have a rate that is independent from its past history. Contrary to Einstein’s view, we do not need the concept of “clock” as an independent concept. This implies, in particular, that we do not need to rely on the notions of atomic clock or atomic time in the theory of relativity. (shrink)

Ether-drift experiments using opposed masers are examined from the point of view that, if molecules contain indigenous radiation, a maser beam might be idealized as a stream of light clocks. According to a recently developed theory of the light clock, in which relativistic Doppler frequencies are developed from a classical ether model augmented by the Fitzgerald contraction, no effect from ether drift is expected, so that the null result of the experiments is in accord with this version (...) of the ether theory. (shrink)

This paper (i) gives necessary and sufficient conditions that clocks in an inertial lattice can be synchronized, (ii) shows that these conditions do not imply a universal light speed, and (iii) shows that the terrestrial redshift experiment provides evidence that clocks in a small inertial lattice in a gravitational field can be synchronized.

General Relativity’s Schwarzschild solution describes a spherically symmetric gravitational field as an utterly static thing. The Space Generation Model describes it as an absolutely moving thing. The light propagation time-delay experiment of Shapiro-Reasenberg [1] and the falling atomic clock experiment of Vessot-Levine [2] provide the ideal context for illustrating how, though the respective world views implied by these models are radically di fferent, they make nearly the same prediction for the results of these experiments.

A vast network of cellular circadian clocks regulates 24‐hour rhythms of behavior and physiology in mammals. Complex environments are characterized by multiple, and often conflicting time signals demanding flexible mechanisms of adaptation of endogenous rhythms to external time. Traditionally this process of circadian entrainment has been conceptualized in a hierarchical scheme with a light‐reset master pacemaker residing in the hypothalamus that subsequently aligns subordinate peripheral clocks with each other and with external time. Here we review new experiments using conditional (...) mouse genetics suggesting that resetting of the circadian system occurs in a more “federated” and tissue‐specific fashion, which allows for increased noise resistance and plasticity of circadian timekeeping under natural conditions. (shrink)

Recent work in the physics literature demonstrates that, in particular classes of rotating spacetimes, physical light rays in general do not traverse null geodesics. Having presented this result, we discuss its philosophical significance, both for the clock hypothesis (and, in particular, a recent purported proof thereof for light clocks), and for the operational meaning of the metric field. 1Introduction 2Fletcher's Theorem 2.1Maudlin on the clock hypothesis in special relativity 2.2Fletcher’s result in special relativity 2.3Fletcher’s theorem in (...) general relativity 3Electromagnetism and the Geometrical-Optical Limit 3.1Maxwell’s equations in curved spacetime 3.2The geometrical-optical limit 3.3Rotating spacetimes 3.4Aren’t Gödel spacetimes unphysical? 4The Clock Hypothesis and Chronogeometry 4.1Natural and mathematical observations 4.2Clock registry discord 4.3Chronogeometry 5Conclusion. (shrink)

Recent work in the physics literature demonstrates that, in particular classes of rotating spacetimes, physical light rays in general do not traverse null geodesics. Having presented this result, we discuss its philosophical significance, both for the clock hypothesis, and for the operational meaning of the metric field.

Most organisms display oscillations of approximately 24 hours in their physiology. In higher organisms, these circadian oscillations in biochemical and physiological processes ultimately control complex behavioral rhythms that allow an organism to thrive in its natural habitat. Daily and seasonal light cycles are mainly responsible for keeping the circadian system properly aligned with the environment. The molecular mechanisms responsible for the control of the circadian clock have been explored in a number of systems. Interestingly, the circadian oscillations that (...) are responsive to environmental stimuli are present very early during development. This review focuses on the advantages of using the zebrafish to study the development of the vertebrate circadian system and light‐dependent signaling to the clock. BioEssays 24:419–426, 2002. © 2002 Wiley Periodicals, Inc. (shrink)

Daylight is the primary cue used by circadian clocks to entrain to the day/night cycle so as to synchronize physiological processes with periodic environmental changes induced by Earth rotation.However, the temporal daylight pattern is not the same every day due to erratic weather fluctuations or regular seasonal changes. Then, how do circadian clocks operate properly in varying weather and seasons? In this paper, we discuss the strategy unveiled by recent studies of the circadian clock of Ostreococcus tauri, the smallest (...) free‐living eukaryotic organism. It combines mechanisms controlling light inputs and clock sensitivity, shaping both the dynamics of the core circadian oscillator and its forcing by light so as to ensure stable and precise synchronization in all weather and seasons.Editor's suggested further reading in BioEssays: Another place, another timer: Marine species and the rhythms of life Abstract. (shrink)

On receiver-based teleosemantic theories of representation, the chemical states of the circadian clocks in animal, plant and cyanobacterial cells constitute signals of future states of affairs, often the rising and setting of the sun. This signalling is much more rigid than sophisticated representational systems like human language, but it is not simple on all dimensions. In most organisms the clock regulates many different circadian rhythms. The process of entrainment ensures that the mapping between chemical states of the clock (...) and the daily light-dark cycle is adjusted to deal with seasonal changes. In regulating anticipatory behaviour, the states of the clock look forward both to the time the behaviour is supposed to happen and the later time when the anticipated circumstances are supposed to arise. The case of the circadian clock shows that purely indicative signals can arise in very basic biological systems and brings into sharp relief the trade-offs involved in characterizing representational systems. On receiver-based teleosemantic theories, future-directed signals are not restricted to complex multicellular organisms but are ubiquitous in the biological world. (shrink)

We consider a sequence of absolute-space kinematical theories which differ more or less from the special theory of relativity (STR) in the amount of clock retardation which they predict, but which agree with STR with respect to roundtrip light experiments, such as Michelson-Morley and Kennedy-Thorndike. This sequence of theories is imbedded in the synchrony-free formulation of STR developed by Winnie by modifying the equal passage time principle. The paper has bearing on the relationship between the slow clock (...) transport behavior of clocks and the one-way velocity of light. Experiments which claim to measure the latter are discussed. (shrink)

This essay discusses the origins, biases, and effects on contemporary discussions of economics and ethics of the unexamined use of the metaphor an economy is a machine. Both neoliberal economics and many critiques of capitalist systems take this metaphor as their starting point. The belief that economies run according to universal laws of motion, however, is shown to be based on a variety of rationalist thinking that – while widely held – is inadequate for explaining lived human experience. Feminist scholarship (...) in the philosophy of science and economics has brought to light some of the biases that have supported the mechanistic worldview. Possible alternatives to the an economy is a machine include an economy is a creative process and an economy is an organism. Such metaphors are intellectually defensible as guides to scientific inquiry and provide a richer ground for moral imagination. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Philosophy 40.1 (2002) 122-123 [Access article in PDF] Book Review Spirits and Clocks: Machine & Organism in Descartes Dennis Des Chene. Spirits and Clocks: Machine & Organism in Descartes. Ithaca, NY and London: Cornell University Press, 2001. Pp. xiii + 181. Cloth, $39.95. Confronted with the thousandth "entirely new" interpretation of the Cartesian mind-body union, one sometimes wonders whether anything new can in fact (...) be said about the great Descartes. Once again, after his invaluable and prize-winning Physiologia (Cornell University Press, 1996), Des Chene proves that a serious historian, with a keen awareness of historical context, actually can. Unlike the usual accounts of Descartes's animal-machine, Des Chene does not concentrate on the all too familiar set of questions whether or not machines can think, sense, etc. Instead, Des Chene interprets the machine-metaphor the way Descartes meant it to be, viz. as a model for explaining animal and human physiology instead of (cognitive) psychology. Des Chene's central claim is that the Traité de l'Homme and Descartes's later (unpublished) physiological tracts are an attempt to replace scholastic commentaries on Aristotle's De Anima, itself discussed in this book's companion volume Life's Forms (Cornell University Press, 2000). Spirits and Clocks investigates how Descartes's general mechanistic program (outlined in Physiologia) is applied to the field of animal and human life. This project in itself had a far more lasting influence than Descartes's specific and often bizarre physiological explanations. Therefore, Des Chene rightly concentrates on the philosophical aspects of Descartes's general project of "mechanizing" physiology. His short but illuminating book studies a wide range of ontological, epistemological, and even aesthetic aspects of the machine metaphor and, although this is not the express goal [End Page 122] of the book, it also sheds new light on the epistemology and metaphysics of the Meditations. In this sense Spirits and Clocks is not only a significant contribution to the history of biology but first and foremost a must for historians of philosophy.Des Chene explains that the use of a machine model in physiology was neither new nor entirely unacceptable to the Aristotelians. What is new is Descartes's use of it. His mechanistic understanding of the body as a machine is incompatible with accepting the soul as the source of life and the principle of all our physiological and psychological capacities, while Aristotelians had no problem in accepting both the soul and certain machine models of the body. (Aristotle himself uses the lever to explain animal motion.) Des Chene sketches Descartes's attempt to explain all physiological processes by means of the physical properties of material parts that obey the general laws of motion, excluding all talk of ends. In this context, the use of illustrations is of considerable importance: though they cannot per se convey a denial of a "soul-model" of physiology, they strongly suggest that the (mechanistically understood) machine is all there is to say about the functions of human and animal bodies. Des Chene offers an interesting, albeit sometimes somewhat speculative and ahistoric, discussion of the aesthetic aspects of the machine model.As Des Chene showed in his Physiologia, the rejection of teleology is one of the main goals of Descartes's physics. However, although Descartes may be successful in rejecting the view that stones fall down from some kind of desire to reach their final destiny, he is less successful in denying that the eye is meant for seeing (and hence for our self-preservation). Des Chene gives a truly fascinating account of the limits of Descartes's denial of teleology in physiology. This includes questions about the physical unity of the human body: how can I explain why I have this body and how can I even identify this body as a unit without invoking ends? Similarly, Descartes takes the healthy, "normally" functioning body as the norm of his investigations. But, again, can he do so without acknowledging some form of teleology? Descartes's answer in most of these cases is that the final goals... (shrink)

Based on genetic and biochemical advances on the molecular mechanism of circadian rhythms, a computational model for the mammalian circadian clock is used to examine the dynamical bases of circadian‐clock‐related physiological disorders in humans. Entrainment by the light–dark cycle with a phase advance or a phase delay is associated with the Familial advanced sleep phase syndrome (FASPS) or the Delayed sleep phase syndrome (DSPS), respectively. Lack of entrainment corresponding to the occurrence of quasiperiodic oscillations with or without (...) phase jump can be associated with the non‐24 h sleep–wake syndrome. In the close vicinity of the entrainment domain, the model uncovers the possibility of infradian oscillations of very long period. Perturbation in the form of chronic jet lag, as used in mice, prevents entrainment of the circadian clock and results in chaotic or quasiperiodic oscillations. It is important to clarify the conditions for entrainment and for its failure because dysfunctions of the circadian clock may lead to physiological disorders, which pertain not only to the sleep–wake cycle but also to mood and cancer. BioEssays 30:590–600, 2008. © 2008 Wiley Periodicals, Inc. (shrink)

The plant maintains a 24‐h circadian cycle that controls the sequential activation of many physiological and developmental functions. There is empirical evidence suggesting that two types of circadian rhythms exist. Some plant rhythms appear to be set by the light transition at dawn, and are calibrated to circadian (zeitgeber) time, which is measured from sunrise. Other rhythms are set by both dawn and dusk, and are calibrated to solar time that is measured from mid‐day. Rhythms on circadian timing shift (...) seasonally in tandem with the timing of dawn that occurs earlier in summer and later in winter. On the other hand, rhythms set to solar time are maintained independently of the season, the timing of noon being constant year‐round. Various rhythms that run in‐phase and out‐of‐phase with one another seasonally may provide a means to time and induce seasonal events such as flowering. (shrink)

Wormald proposes to remove the anomalous absorption of photons in the light clock by making a relativistic correction for absorption frequencies in the mirrors. This would require different corrections for atoms in mirrors 1 and 2, even though both have the same velocity relative to the observer. A relativistic time transformation by direct velocity dependence of time rate is different from a transformation between clocks with Lorentz-invariant proper time readings. With ascription of an invariant proper time to the (...) photon clock, one loses its property of directly illustrating the relativistic time transformation. (shrink)

Recently-discovered manuscripts throw new light on Poincaré’s discovery of the Lorentz group, and his ether-based interpretation of the Lorentz transformation. At first, Poincaré postulated longitudinal contraction of bodies in motion with respect to the ether, and ignored time deformation. In April, 1909, he acknowledged temporal deformation due to translation, obtaining thereby a theory of relativity more compatible with those of Einstein and Minkowski.

It has been known for years that it is only the round-trip speed of light that has physical significance. We show that even using this freedom, the synchronization gap, which is useful for testing predictions of general relativity, still remains.

This paper gives two complete and elementary proofs that if the speed of light over closed paths has a universal value c, then it is possible to synchronize clocks in such a way that the one-way speed of light is c. The first proof is an elementary version of a recent proof. The second provides high precision experimental evidence that it is possible to synchronize clocks in such a way that the one-way speed of light has a (...) universal value. We also discuss an old incomplete proof by Weyl which is important from an historical perspective. (shrink)

We explore the mathematical structure and the physical implications of a general four-dimensional symmetry framework which is consistent with the Poincaré—Einstein principle of relativity for physical laws and with experiments. In particular, we discuss a four-dimensional framework in which all observers in different frames use one and the same grid of clocks. The general framework includes special relativity and a recently proposed new four-dimensional symmetry with a nonuniversal light speed as two special simple cases. The connection between the properties (...) of light propagation and the convention concerning clock systems is also discussed, and is seen to be nonunique within the four-dimensional framework. (shrink)

If is often taken for granted that on a rotating disk it is possible to operate a global 3+1 splitting of spacetime such that both lengths and time intervals are uniquely defined in terms of measurements performed by real rods and real clocks at rest on the platform. This paper shows that this assumption, although widespread and apparently trivial, leads to an anisotropy of the velocity of two light beams traveling in opposite directions along the rim of the disk, (...) which in turn implies some recently pointed out paradoxical consequences undermining the self-consistency of the special theory of relativity (SRT). A correct application of the SRT solves the problem and recovers complete internal consistency for the theory. As an immediate consequence, it is shown that the Sagnac effect only depends on the nonhomogeneity of time of the platform and has nothing to do with any anisotropy of the speed of light along the rim of the disk, contrary to an incorrect but widely held idea. (shrink)

Previous research has reported that ethical values of business students are lower than those of their peers in other majors. The purpose of this study was to investigate whether a self-selection bias with respect to ethical values exists among students enrolled as business majors when compared with students planning to enter the engineering profession. Engineering students are exposed to a similar technical orientation in academic curricula and also supply the market for managers.A survey instrument was administered to 195 students enrolled (...) in undergraduate business and engineering programs and a graduate business program. The research instrument measured how business and engineering students perceive their own ethical beliefs and actions and how they perceived the ethical beliefs and actions of their peers. (shrink)

This chapter explores the ethical dimensions of diplomatic efforts to form a global agreement on climate change. It offers a brief historical background on the core multilateral climate negotiation body, the United Nations Framework Convention on Climate Change, and highlights some contentious moral elements of these negotiations. In particular, it explores the complex ways in which the principle of “common but differentiated responsibilities” has driven debates on how burdens for mitigation, adaptation, and finance should be distributed between developed and developing (...) countries. It then considers the transformation in these climate negotiations since 2009, including the move toward a bottom-up architecture as part from the Copenhagen Accord to the Paris Agreement. Finally, it assesses the current state of climate diplomacy in relation to broader diplomatic priorities, arguing that climate diplomacy must be elevated alongside other top-tier foreign policy issues today in order to eventually achieve some level of climate stability. (shrink)

After discussing in the first five sections the meaning and the difficulties of the principle of relativity we present a new sel of spacetime transformations between inertial systems (“inertial” transformations), based on three assumptions: (1) The two-way velocity of light is c in all inertial systems and in all directions; (2) Time dilation effects take place with the usual relativistic factor; (3) Clocks are synchronized in the way chosen by nature itself, e.g., in the Sagnac effect. We show that (...) our new transformation laws can explain the available experimental evidence in spite of the implied noninvariance of the one-way velocity of light. (shrink)

The aesthetics of everyday life, originally developed by Henri Lefebvre and other modernist theorists, is an extension of traditional aesthetics, usually confined to works of art. It is not limited to the study of humble objects but is rather concerned with all of the undeniably aesthetic experiences that arise when one contemplates objects or performs acts that are outside the traditional realm of aesthetics. It is concerned with the nature of the relationship between subject and object. One significant aspect of (...) everyday aesthetics is environmental aesthetics, whether constructed, as a building, or manipulated, as a landscape. Others, also discussed in the book, include sport, weather, smell and taste, and food. (shrink)

In connection with another article by the author, we show how it might be possible to travel faster than the speed of light. We show that for clocks and rods moving faster than the speed of light, we get instead of “time dilation” and “Lorentz contraction,” respectively, “time contraction” and “Lorentz expansion,” respectively. It is shown that this paper is in confirmation with earlier articles dealing with this subject.

A number of physical processes and experimental procedures are listed which appear to be inexplicable in the context of the conventionality thesis of Reichenbach and Grünbaum. Distant synchrony can be produced by procedures based on the free displacement or rotation of elastic solids. Results are expected to agree with Einstein's definition of distant synchrony (by means of light signals, assuming isotropy). The one-way velocity of light can be measured using a rotating shaft, slotted disks, and one stationary (...) class='Hi'>clock. (shrink)

O artigo traz resultados de uma investigação de mestrado que teve por objetivo pesquisar as concepções de um grupo de professores a respeito das funções que os mesmos exercem frente à sociedade contemporânea. Partiu-se da premissa de que suas concepções guardam relação com suas práticas educativas e pedagógicas. Trata-se de uma pesquisa desenvolvida na perspectiva qualitativa, com cinquenta e um professores que atuam em seis escolas estaduais da cidade de Ponta Grossa-PR. Elegeu-se como aporte teórico autores que tratam da formação (...) de professores e da profissão docente, como Freire, Imbernón, Ens e Behrens, Tozetto, Sacristán e Tedesco. Os dados foram coletados por meio de questionários, categorizados e analisados seguindo os pressupostos na Análise de Conteúdo. Três categorias foram configuradas a partir de significantes presentes nas respostas dos professores participantes: Categoria I – Professor como um sujeito transformador: educação em uma forma ampla, Categoria II – Professor como profissional do conhecimento, e Categoria III – Professor enquanto sujeito que desempenha vários papéis sociais. Essas categorias nos possibilitaram inferir que as concepções dos professores em relação ao seu papel na sociedade contemporânea vão além da função social da escola, pois centram-se primeiramente na figura de um profissional transformador do mundo; seguida da noção de profissional do conhecimento e, por fim, da ideia de um profissional que desempenha vários papéis sociais. A pesquisa também apontou uma necessária redefinição da profissão docente para que os professores assumam novas competências profissionais na contemporaneidade. Palavras-chave: Profissão docente. Função dos professores. Sociedade contemporânea. Concepções. (shrink)

Context: A tension exists between the needs and desires of the institutions providing the funding for academics to attend conferences and the potential for transforming the knowledge and understanding of conference participants - than in advancing their own careers and celebrity. Approaches to the problem can recognize the importance of funding and career-building in the current society, while still experimenting in ways that could generate new ideas. Method: Ideas from second-order cybernetics are used to derive design principles that might alleviate (...) the tension and encourage deep conversations, idea generation and experimentation. The author draws on experiences with designing, organizing and participating in cybernetics conferences over a period of 34 years. Results: An academic conference designed to a set of broad, second-order cybernetic principles, where participants are informed of the design intent before they decide to attend, can open an opportunity for learning, understanding and the creation of new ideas in ways that would not otherwise be available. Although there are no guarantees, such designs can attenuate the tension, often experienced at traditionally designed conferences, between advancing individual careers/celebrity and building new knowledge together. Implications: The design principles derived, already exhibited in some conferences, could be useful to organizers wishing to foster incompatible and opposing ideas and facilitate dialogue among conference participants. These same principles have implications for the design of other social systems and point to the possibility of a new and more humane society. Constructivist content: A feature of second-order cybernetics is that knowledge is continually changing as our desires change, and we must take responsibility for the consequences of the ideas we construct and use to satisfy our desires. Key Words: Design by constraint, dynamics of interaction, asynchronicity, tyranny of the clock, times of truth, moments of art. (shrink)

_The Routledge Companion to Environmental Ethics_ is comprised of sixty original essays, which focus on how ethical questions intersect with real and pressing policy issues. Rather than overviewing abstract conceptual categories, the authors focus on specific controversies involving the environment. Clearly written contributions on Fossil Fuels, Urban Sustainability, Novel Ecosystems, and many other subjects make accessible these issues‘ empirical and political dimensions as well as their theoretical underpinnings. Written to be accessible for undergraduates and general readers, but comprehensive enough to (...) be a useful reference work for researchers in a variety of related fields, it promises to be an invaluable resource for better understanding the ethical landscape of our environmental world. (shrink)

Institutional corruption is a normative concept of growing importance that embodies the systemic dependencies and informal practices that distort an institution’s societal mission. An extensive range of studies and lawsuits already documents strategies by which pharmaceutical companies hide, ignore, or misrepresent evidence about new drugs; distort the medical literature; and misrepresent products to prescribing physicians. We focus on the consequences for patients: millions of adverse reactions. After defining institutional corruption, we focus on evidence that it lies behind the epidemic of (...) harms and the paucity of benefits. (shrink)

Over the past 35 years, patients have suffered from a largely hidden epidemic of side effects from drugs that usually have few offsetting benefits. The pharmaceutical industry has corrupted the practice of medicine through its influence over what drugs are developed, how they are tested, and how medical knowledge is created. Since 1906, heavy commercial influence has compromised congressional legislation to protect the public from unsafe drugs. The authorization of user fees in 1992 has turned drug companies into the FDA's (...) prime clients, deepening the regulatory and cultural capture of the agency. Industry has demanded shorter average review times and, with less time to thoroughly review evidence, increased hospitalizations and deaths have resulted. Meeting the needs of the drug companies has taken priority over meeting the needs of patients. Unless this corruption of regulatory intent is reversed, the situation will continue to deteriorate. We offer practical suggestions including: separating the funding of clinical trials from their conduct, analysis, and publication; independent FDA leadership; full public funding for all FDA activities; measures to discourage R&D on drugs with few, if any, new clinical benefits; and the creation of a National Drug Safety Board. (shrink)

In the past thirty years environmental ethics has emerged as one of the most vibrant and exciting areas of applied philosophy. Several journals and hundreds of books testify to its growing importance inside and outside philosophical circles. But with all of this scholarly output, it is arguably the case that environmental ethics is not living up to its promise of providing a philosophical contribution to the resolution of environmental problems. This article surveys the current state of the field and offers (...) an alternative path for the future development of environmental ethics toward a more publicly engaged model of applied philosophy. (shrink)