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Bangladesh is one the worst sufferers of climate change. Climate change awareness creation is pivotal to adaptation and mitigation strategies. Effective dissemination of knowledge among the citizens during high school years is crucial to that end. In Bangladesh, secondary school students follow common curricula which include entries on climate change. This paper investigates the role of the diverse demographic profiles and inherent scholastic background of students on their informedness. The research is based on responses from secondary schools students in Chittagong, Bangladesh. Based on their understanding of climate change, we have constructed the Climate Awareness Index (CAI). Then the relative roles of demographic determinants of the awareness have been compared using the CAI. The quality of schools, and grade, major and merit position of students have affected the CAI values. Besides, the study concluded that the religion, gender, parental education, occupation and income, etc. could affect students' climate change informedness in Bangladesh.

Soil salinity is a global problem that has adverse effects on both agriculture and aquaculture production. The main objectives of this study were to observe the distribution pattern of soil salinity in the accreted and non-accreted land of the Noakhali district and to determine the intensity of salinity at different depths (1–2 cm, 15–20 cm, and 45–60 cm). Soil samples from 60 sampling sites were analyzed to measure electrical conductivity (EC). The two-way factorial ANOVA model revealed a significant effect of depth (p < 0.001) and sampling locations (p < 0.001) on soil salinity. After decomposition of this model, one-way ANOVA showed that 45–60 cm of depth contains significantly higher soil salinity (p < 0.01) ranging from 0.28 to 4.70 dS/m compared to 1–2 cm (ranging from 0.14 to 2.39 dS/m) and 15–20 cm (ranging from 0.18 to 2.37 dS/m) depth. In the case of accreted lands, surface (1–2 cm) and mid-layer (15–20 cm) soils were found slight to severely saline, while soil at a depth of 45–60 cm was found high to extremely saline. In all cases, salinity increases from the north to southwards and surface to downwards. Our results showed that the accreted land of the Noakhali district contains higher soil salinity compared to the non-accreted land, and soil salinity is positively correlated with depth. Assessment of suitable species and pattern of traditional cropping practices in the study area show conformity with our salinity profile. The study will help stakeholders associated with agricultural development and management in planning and designing the future land use and cropping practices.