Improving access to modern energy sources is critical to enhancing the quality of life of many people in developing countries. In southern Africa, the majority of rural and poor urban households are dependent on solid fuels to meet their cooking needs. To date, there is scarce information in the literature on household cooking fuel patterns across southern Africa. Using household fuel data from the Demographic and Health Survey, this study investigated cooking fuel types and the determinants of their choice by households in selected countries in sub-Saharan Africa. The data on household cooking energy were subjected to descriptive and inferential statistics. Results show that 25% of sampled households in all seven countries have access to electricity, while 66% rely on biomass for cooking. Chi-Square analyses revealed a statistically significant relationship between place of residence and type of cooking fuel, and between access to electricity and type of cooking fuel. Results from multiple regression analysis showed that socio-demographic factors such as access to electricity, household size, the level of education and wealth index have a positive influence on the type of cooking fuel used in this region. However, access to electricity does not imply that households will negate the use of traditional fuels. These results have implications for household air pollution, health, policy and environmental sustainability. It is recommended that energy interventions in this region need to consider demand

Will the ongoing extinction crisis cause a severe loss of evolutionary information accumulated over millions of years on the tree of life? This question has been largely explored, particularly for vertebrates and angiosperms. However, no equivalent effort has been devoted to gymnosperms. Here, we address this question focusing on cycads, the gymnosperm group exhibiting the highest proportion of threatened species in the plant kingdom. We assembled the first complete phylogeny of cycads and assessed how species loss under three scenarios would impact the cycad tree of life. These scenarios are as follows: (1) All top 50% of evolutionarily distinct (ED) species are lost; (2) all threatened species are lost; and (3) only all threatened species in each IUCN category are lost. Finally, we analyzed the biogeographical pattern of cycad diversity hotspots and tested for gaps in the current global conservation network. First, we showed that threatened species are not significantly clustered on the cycad tree of life. Second, we showed that the loss of all vulnerable or endangered species does not depart significantly from random loss. In contrast, the loss of all top 50% ED, all threatened or all critically endangered species, would result in a greater loss of PD (Phylogenetic Diversity) than expected. To inform conservation decisions, we defined five hotpots of diversity, and depending on the diversity metric used, these hotspots are located in Southern Africa, Australia, Indo‐Pacific, and Mexico and all are found within protected areas. We conclude that the phylogenetic diversity accumulated over millions of years in the cycad tree of life would not survive the current extinction crisis. As such, prioritizing efforts based on ED and concentrating efforts on critically endangered species particularly in southern Africa, Australia, Indo‐Pacific, and Mexico are required to safeguarding the evolutionary diversity in the cycad tree of life.

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Beverages derived from wild plant species play an important role in local and traditional food systems in rural communities such as in the Vhembe District, South Africa. Conducting research on such foodstuffs may help to prevent loss of indigenous knowledge on potential dietary sources for needy households. Through surveys and focussed group discussions, 41 different beverage-making plant species were identified. Traditional beverage making processes are of three types. Preparing teas involve a boiling process while juices are manually extracted following overnight soaking of the fruit pulp mixture. Brewing traditional beer usually requires a spontaneous fermentation process lasting 2-3 days.

Large corporates have come under increasing pressure to conduct their business in a more transparent and responsible manner. In order for business to fulfil its obligations under the ethic of accountability stakeholders must be given relevant, timely, and understandable information about their activities through corporate reports. The conventional company reports on annual financial performance, sustainability and governance disclosures often fail to make the connection between the organisation’s strategy, its financial results and performance on environmental, social and governance issues. Recognising the inherent shortcomings of existing reporting models, there is a growing trend to move towards integrated reporting. South Africa has been one of the most innovative countries in terms of integrated corporate reporting. Since 2010 companies primarily listed on the country’s major stock exchange have been required to produce an integrated report as opposed to the former sustainability report. The aim in this study is to review the development of integrated reporting by large corporates in South Africa and assess the impact of the required transition from sustainability reporting to integrated reporting on non-financial disclosure of eight South African corporates using content analysis of annual reports.

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Nearly 290,000 tons of electronic waste was generated in Nigeria during the year 2017, which is likely to increase further due to high population growth rates, accelerated urbanization, high demand for electronic products, as well as disposal at their end-of-life. At the same time, e-waste is associated with negative human health impacts, as well as environmental pollution. Therefore, environmental awareness on this waste stream is crucial in its management and possible minimization. In this paper, we report on a survey which investigated awareness levels and knowledge amongst households in the Jos metropolis, Plateau State (Nigeria). We interviewed 228 respondents by means of close-ended questionnaires. The results indicated that cell phones (93%) and television sets (82%) were mentioned by most respondents. The main reasons for acquiring these electronic devices entailed the replacement of damaged ones (49.6%), frequent product upgrades (37.7%), as well as theft (35.55%), amongst others. The most predominant method of disposing e-waste included illegal dumping in open spaces along with other household wastes (25%), storing it at home indefinitely (27.6%), and selling it to others for possible reuse (17.5%). Although the handling and storage of this waste is currently inappropriate, most respondents (84.2%) were willing to participate in its management provided they are given appropriate knowledge (89.9%) on its safe disposal and recycling. Lastly, we found no significant correlation between existing awareness levels on e-waste and willingness to participate in its management based on the socio-demographical profile of respondents. Thus, we recommend educational interventions on sound e-waste management in the Jos metropolis, along with a systematic analysis of how policy interventions such as the extended producer responsibility schemes can be designed for effective e-waste management and recycling amongst all stakeholders.

Most research on teas has focused on organic composition and less attention has been given to the mineral composition. The aim of this study was to examine and compare the mineral compositions (Na, Mg, K, Ca, P, S, Fe, Mn, Zn, Cu and Al) of eight commonly consumed teas. The teas included three traditional black or green teas (from Africa, China and Sri Lanka) and five herbal teas -two from South America (maté and coca) and three from South Africa (rooibos, honeybush and Athrixia phylicoides). Analyses were conducted on five samples of dry tea leaves of each of the teas and their infusions (steeping time: 6 min) using identical techniques in inductively coupled plasma optical emission spectrometry (ICP-OES). It was found that each tea has a unique mineral profile. Dry tea leaves and their respective infusions also exhibited different mineral profiles. The tea infusions that contained relatively higher concentrations of beneficial minerals were maté, coca and Athrixia. High levels of aluminium were found in the traditional black and green teas whilst rooibos was high in sodium. Although teas are not rich sources of nutrients, the consumption of maté could contribute significantly to dietary manganese requirements.