Green grabs and biochar: Revaluing African soils and farming in the new carbon economy

Biochar currently attracts technological and market optimism, promising multiple wins – for climate change, food security, bioenergy and health – not least for African farmers. This paper examines the political-economic and discursive processes constructing biochar as a novel green commodity, creating new alliances amongst scientists, businesses, venture capital firms and non-governmental organisations. Carbon market logics are not only threatening large-scale land grabs for biochar feedstocks but also other forms of resource, labour and ecological appropriation through driving research and development and shaping small-scale pilot projects. In these, soil carbon is ‘chopped out’ of its ecosystem and social contexts and revalued as exchangeable pieces of carbon nature. Farmers are hailed as green actors and market winners, provided they discipline their practices according to these new technical and market logics. These discourses contrast strongly with the farmers' existing conceptual and practical repertoires; a case study from Liberia illustrates how farmers already manipulate soil carbon in creating locally valued anthropogenic dark earths, but within diverse farming repertoires, ontologies of human–nature interrelationship and historical and political ecologies.     

Juveniles in the rural work force of sixteenth‐century castile

Peasant children in sixteenth‐century Castile helped their families with various domestic chores and agropastoral jobs. Used as unpaid workers, they enabled the typical peasant family to diversify its activities, and often to raise its standard of living. Hired juvenile workers were also quite important in Golden Age Castile. These seemingly entered the job market because their own families lacked the resources to enable them to remain at home. The experience of active participation in productive activities served all juvenile workers, whether paid or unpaid, as a sort of apprenticeship in preparation for adult membership in the peasant community.     

The establishment of the presence of sperm in stains by an agar gel electrophoretic method]

Comparative investigation of seminal stains and other secretions from human body and blood as well as objects of plant origin by gel electrophoresis using alkaline values of pH buffer solutions and subsequent enzymography for acid phosphatase made it possible to develop optimal conditions for detection of seminal presence in stains. Good preservation of seminal acid phosphatase in stains during several years is shown.     

Some Varieties of Linguistic Argumentation

The maxim to understand the law literally (Montesquieu, Voltaire) resembles Holmes' Plain Meaning Approach. But these approaches should not be considered as the expression of a naïve legal epistemology. They rather stress that the law ought to be interpreted as it is understood by the prudent citizen. In this way, the ideal of the rule of law is best guaranteed.     

Looking Ahead: Addressing Ethical Challenges in Public Health Practice

Ethical challenges in public health can have a significant impact on the health of communities if they impede efficiencies and best practices. Competing needs for resources and a plurality of values can challenge public health policymakers and practitioners to make fair and effective decisions for their communities. In this paper, the authors offer an analytic framework designed to assist policymakers and practitioners in managing the ethical tensions they face in daily practice. Their framework is built upon the following set of six considerations: determining population-level utility of the proposed action; demonstrating evidence of need and effectiveness of actions; establishing fairness of goals and proposed implementation strategies; ensuring accountability; and, assessing expected efficiencies and costs associated with the proposed action. Together, these considerations create a structured guide to assist decision-makers in identifying potential ethical challenges and in assessing the moral considerations that underlie public health practice - and possibly even, if the conditions are met, reduce the creation of ethical tension. Although the authors'empirical experiences provide the basis for the framework advanced here, their approach remains to be tested and evaluated by public health practitioners.