Lowering Real Interest Rates Could Slow Global Warming

Carbon dioxide emissions from fossil fuel combustion have increased markedly in this century. Increased carbon dioxide concentrations in the atmosphere are thought likely to help produce a warming of global climate. Many strategies to reduce or reverse the anticipated global warming point to reductions of fossil fuel combustion as a primary ingredient. This paper examines the possibility of obtaining a decrease in world petroleum supply as a result of reducing interest rates relative to the rate of inflation

Introduction: International Law Governing Armed Conflict

Wars are emergency situations, but in contrast to the saying according to which necessity knows no law, they are not lawless situations at all. Quite to the contrary, an extensive body of international treaties and customary international law provides detailed regulations. However, which rules do and should apply to what kinds of situation is a hotly debated issue and the subject of this book. Different regulatory paradigms are competing for how wartime situations shall be regulated – with significant legal, practical and institutional implications. This book approaches the legal issue in a Trialogue. The characteristic feature of a Trialogue is to approach questions of international law from three perspectives, which differ in terms of their regional background, technical method, professional specialisation and worldview of the co-authors. The three authors (who are embedded in their particular social and cultural context) approach the law from their particular perspective, which invariably influences what they identify as the relevant rules and how they interpret and apply those. The core method of the ‘Max Planck Trialogues on the Law of Peace and War’ is to positively acknowledge the diversity of perspectives, and to make constructive use of them (multi-perspectivism)

Bacterial community composition and extracellular enzyme activity in temperate streambed sediment during drying and rewetting

Droughts are among the most important disturbance events for stream ecosystems; they not only affect stream hydrology but also the stream biota. Although desiccation of streams is common in Mediterranean regions, phases of dryness in headwaters have been observed more often and for longer periods in extended temperate regions, including Central Europe, reflecting global climate change and enhanced water withdrawal. The effects of desiccation and rewetting on the bacterial community composition and extracellular enzyme activity, a key process in the carbon flow of streams and rivers, were investigated in a typical Central European stream, the Breitenbach (Hesse, Germany). Wet streambed sediment is an important habitat in streams. It was sampled and exposed in the laboratory to different drying scenarios (fast, intermediate, slow) for 13 weeks, followed by rewetting of the sediment from the fast drying scenario via a sediment core perfusion technique for 2 weeks. Bacterial community structure was analyzed using CARD-FISH and TGGE, and extracellular enzyme activity was assessed using fluorogenic model substrates. During desiccation the bacterial community composition shifted toward composition in soil, exhibiting increasing proportions of Actinobacteria and Alphaproteobacteria and decreasing proportions of Bacteroidetes and Betaproteobacteria. Simultaneously the activities of extracellular enzymes decreased, most pronounced with aminopeptidases and less pronounced with enzymes involved in the degradation of polymeric carbohydrates. After rewetting, the general ecosystem functioning, with respect to extracellular enzyme activity, recovered after 10 to 14 days. However, the bacterial community composition had not yet achieved its original composition as in unaffected sediments within this time. Thus, whether the bacterial community eventually recovers completely after these events remains unknown. Perhaps this community undergoes permanent changes, especially after harsh desiccation, followed by loss of the specialized functions of specific groups of bacteria

The Literariness of Media Art

“Language can be this incredibly forceful material—there’s something about it where if you can strip away its history, get to the materiality of it, it can rip into you like claws” (Hill in Vischer 1995, 11). This arresting image by media artist Gary Hill evokes the nearly physical force of language to hold recipients in its grip. That power seems to lie in the material of language itself, which, with a certain rawness, may captivate or touch, pounce on, or even harm its addressee. Hill’s choice of words is revealing: ‘rip into’ suggests not only a metaphorical emotional pull but also the literal physicality of linguistic attack. It is no coincidence that the statement comes from a media artist, since media artworks often use language to produce a strong sensorial stimulus. Media artworks not only manipulate language as a material in itself, but they also manipulate the viewer’s perceptual channels. The guises and effects of language as artistic material are the topic of this book, The Literariness of Media Art

VISTAS GENERALES [Material gráfico]

Copia digital. Madrid : Ministerio de Educación, Cultura y Deporte, 201