This study contributes to the existing literature on energy poverty and food security in sub-Saharan Africa (SSA). The study is conducted on a panel of 36 SSA countries over the period 2000 to 2020. Using several estimation methods, such as fixed effects, Driscoll-Kraay, Lewbel 2SLS, and the generalized method of moments, we find positive results for energy on food security. In SSA, the energy development index, access to electricity, and access to clean energy for cooking positively influence food security. This can encourage policy makers to prioritize investments in off-grid energy for vulnerable households through small-scale energy systems, which can promote food security by directly affecting local food production, preservation, and preparation, and contribute to human well-being and environmental conservation.

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The purpose of this study is to analyse the impact of the informal economy on bilateral exports in sub‐Saharan African countries. We use a gravity model, to which we add indicators of the informal economy and indicator variables for different economic regions. The study used Pseudo‐Poisson Maximum Likelihood (PPML) and Heckman estimation techniques on data from the period 2002–2018. The results show that the informal economy has a negative impact on bilateral inter‐community exports and a positive impact on bilateral intra‐community exports. These results thus support the idea that the informal economy can accelerate the integration of regional economic communities and ultimately facilitate the establishment of bilateral export free trade areas at the continental level.

Résumé Ce papier a pour objectif d'examiner les effets de la croissance économique sur les émissions de dioxyde de carbone (CO2) et sur l’évolution de la température au Cameroun sur la période 1972–2010. Le test de cointégration par les retards échelonnés ou Auto Regressive Distributed Lags (ARDL) indique l'existence d'une relation de long terme sous forme de « N inversé » entre la croissance économique et les indicateurs de dégradation environnementale (émissions de CO2 et évolution de la température) retenus dans cette étude. Ensuite, on constate que la consommation d’énergie et les activités industrielles accroissent les émissions de CO2 mais pas l’évolution des températures au Cameroun. Par contre, l'ouverture commerciale entraine une baisse du niveau de CO2 mais pas de la température. Ce résultat laisse entrevoir que le Cameroun exporte ou transmet sa pollution vers l'extérieur ou vers d'autres pays.