Articles Published During 2019 2019 Modeling of Photovoltaic Module Using the MATLABArticles, Articles 2019, Original Research articlesCarbon Storage of Wooden Houses, Trees, and Grazing Land in Rural Areas of Enemorina Ener District, Southern EthiopiaArticles, Articles 2019, Original Research articlesClean Cookstove Technology Use for Energy Efficiency in the School SystemArticles, Articles 2019Analysis of the soil and microclimate relationship in two dolines of Carso Huasteco, MexicoArticles, Articles 2019, Original Research articlesPotential for leaching of heavy metals and metalloids from crystalline silicon photovoltaic systemsArticles, Articles 2019, Research noteCharacterization and Mapping of the Causes, Intensity and Effects of Natural Resource Use Conflicts in Kilosa and Mvomero, TanzaniaArticles, Articles 2019, Original Research articles