The ‘resource curse’ hypothesis claims that abundance in natural resources, particularly oil, encourages especially civil war. Natural resources provide both motive and opportunity for conflict and create indirect institutional and economic causes of instability. Contrarily, the theory of the rentier state — largely neglected in the study of peace and war in this respect — suggests that regimes use revenue from abundant resources to buy off peace through patronage, large-scale distributive policies and effective repression. Consequently, such rentier states would tend to be more stable politically and less prone to conflict. These two theories thus imply ambivalent effects of resource abundance on conflict proneness. This article presents part of a solution to this apparent puzzle for the case of oil-producing countries. The key argument is that both resource wealth per capita and resource dependence need to be taken into account, since only the availability of very high per capita revenues from oil allows governments to achieve internal stability. The empirical analysis supports this hypothesis. The findings of multivariate cross-country regressions indicate a U-shaped relationship between oil dependence and civil war onset, while high resource wealth per capita tends to be associated with less violence. The results of a macro-qualitative comparison for a reduced sample of highly dependent oil exporters are even more clearcut. Using the same reduced sample, we find that oil-wealthy countries apparently manage to maintain political stability by a combination of large-scale distribution, high spending on the security apparatus and protection by outsiders. Compared to oil-poor countries and in contradiction to the rentier state theory, the institutions of oil-wealthy countries do not seem to be particularly characterized by patronage and clientelism.

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The Beta version of the Land Matrix (http://landportal.info/landmatrix) was launched in April 2012 as a tool to promote public participation in building a constantly evolving database on largescale land deals, and making the data visible and understandable. The aim of the Land Matrix partnership is to promote transparency and open data in decision-making over land and investment, as a step towards greater accountability. Since its launch, the Land Matrix has attracted a high degree of attention, and stirred some controversy. It provides valuable lessons on the challenges and benefits of promoting open data on practices that are often shrouded in secrecy. This paper critically examines the ongoing efforts by the Land Matrix partnership to build a public tool to promote greater transparency in decision-making over land and investment at a global level. It intends to provoke discussion of the extent to which such a tool can ultimately promote greater transparency and be a step towards greater accountability and improved decision-making. It will present the Land Matrix and its value addition, before detailing the challenges it encountered related to the measurement of the large-scale land acquisition phenomenon. It will then specify how it intends to address these issues in order to establish a dynamic and participatory tool for open development.The Land Matrix (LM) is a global, independent initiative for monitoring land deals. It is facilitated by a partnership of organizations 1 concerned by decision-making over largescale land deals, their implications for communities and the environment, and the fact that many directly affected stakeholders are currently excluded from such decisionmaking. The LM provides tools for widening citizen involvement in making data available and understandable, thus promoting transparency and accountability. It is ultimately an effort in improved decision-making over land resources and their use.

This paper investigates the patterns of capital entry barriers and capital returns in informal micro and small enterprises (MSEs) using a unique micro dataset for seven West African countries. Our findings support the view of a heterogeneous informal sector that is not primarily host to subsistence activities. While an assessment of initial investment identifies some informal activities with negligible entry barriers, a notable cost of entry is associated with most activities. We find very heterogeneous patterns of capital returns in informal MSEs. At very low levels of capital, marginal returns are extremely high—often exceeding 70 percent per month. Above a capital stock of 150 International Dollars, marginal returns are found to be relatively low at around 4–7 percent monthly. We provide some evidence that the high returns at low capital stocks reflect high risks. At the same time, most MSEs appear to be severely capital constrained.

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We study the determinants of households' choices of lighting fuels in Kenya, including the option of using solar home systems (SHSs). The paper adds new evidence on the factors that influence the introduction and adoption of decentralized and less carbon-intensive energy sources in developing countries. We capitalize on a unique representative survey on energy use and sources from Kenya, one of the few relatively well-established SHSs markets in the world. Our results reveal some very interesting patterns in the fuel transition in the context of lighting-fuel choices. While we find clear evidence for a crosssectional energy ladder, the income threshold for modern fuel use -including solar energy use -is very high. Income and education turn out to be key determinants of SHSs adoption, but we also find a very pronounced effect of SHSs clustering. In addition, we do not find a negative correlation between grid access and SHSs use.

We study the determinants of households' choices of lighting fuels in Kenya, including the option of using solar home systems (SHSs). The paper adds new evidence on the factors that influence the introduction and adoption of decentralized and less carbon-intensive energy sources in developing countries. We capitalize on a unique representative survey on energy use and sources from Kenya, one of the few relatively well-established SHSs markets in the world. Our results reveal some very interesting patterns in the fuel transition in the context of lighting-fuel choices. While we find clear evidence for a crosssectional energy ladder, the income threshold for modern fuel use -including solar energy use -is very high. Income and education turn out to be key determinants of SHSs adoption, but we also find a very pronounced effect of SHSs clustering. In addition, we do not find a negative correlation between grid access and SHSs use.

This article analyses the determinants of growing demand for agricultural land in developing countries. We propose some determinants that are specific to foreign acquisitions of agricultural land as a subset of agricultural foreign direct investment (FDI) and empirically examine the corresponding locational choice. Using a gravity model and a data set on land acquisitions worldwide, we find that the determinants partly overlap with those for other forms of FDI but are specific in certain regards. Rich investors target (poorer) economies with abundant land and water resources, and the effects of the quality of institutions are ambiguous.