Climate change is an imminent threat to humanity that brings significant environmental, social, and economic consequences worldwide, with population growth and deforestation among these effects. The research aims to analyze the causes and effects of climate change over the last 30 years. Various sources of information were analyzed to interpret the consequences; therefore, it is important to understand and analyze the causes and effects of climate change, generating information on temperature trends, precipitation, and glacier loss from 1990 to 2020. The evidence of the increase in the average temperature of the planet is becoming increasingly solid. The average annual temperature in the Coast region ranges from 21.1 to 22.6 °C, in the Sierra region from 12.6 to 14.4 °C, and in the Jungle region from 22.7 to 25.7 °C. Annual average precipitation in the Coast region varies from 22.3 to 174.1 mm, in the Highlands region from 570 to 834.3 mm, and in the Jungle region from 1156 to 2093 mm. The White Mountain Range has lost approximately 40.5% of its total glacier coverage on average, and between 1996 and 2019 the amount of tropical glaciers has decreased by 28.17%. It was concluded that the threats of climate change are increasingly evident, due not only to environmental pollution but also to the various human activities that generate changes in the environment.

El acceso al agua potable por red pública es un problema de la población rural en el departamento de Huánuco, por ende, se suele realizar el consumo de este recurso sin previo tratamiento, produciéndose así enfermedades estomacales. El uso de agentes naturales como el Aloe vera (L.) (Sábila) viene a ser una alternativa como floculante para el tratamiento convencional del agua, por tal motivo, en esta investigación se visualizaron experimentalmente las características y reacciones del gel de A. vera como floculante en la remoción de la turbidez. La turbidez del agua se simuló con el caolín, y se determinó la concentración óptima de alúmina y sábila (1%) a valores diferentes de pH y turbidez iniciales, con los datos resultantes se optimizó las dosis mediante el modelo matemático de superficie de respuesta, para después realizar su respectiva validación mediante métodos gráficos e índices matemáticos; los resultados reflejaron que la turbidez inicial, pH inicial y la dosis del coagulante influyen significativamente en la remoción de la turbidez de agua, de forma individual, concluyendo según el modelo de superficie de respuesta que el volumen óptimo de sábila al 1% alcanza su mayor eficiencia a 0,1 mL y 0,4 mL por cada 500 mL, dosis que varía de acuerdo a su pH y turbidez inicial, este modelo matemático se ajusta para aguas superficiales de la ciudad de Tingo María.

Health care empowerment is essential for self-care, informed decision-making, and appropriate use of health services among university students. This cross-sectional pilot study examined the association between selected social determinants of health and health care empowerment among university students in Peru. A sample of 336 undergraduate and graduate students from six universities completed an online survey that included the Empowerment Scale for Health Care Empowerment in University Students (ECSU). The instrument demonstrated adequate psychometric properties (Cronbach’s α = 0.859; McDonald’s ω = 0.835). Descriptive analyses and ordinal logistic regression were conducted to identify factors associated with health care empowerment and its dimensions. Income level, family type, and housing situation were associated with overall empowerment. Lower income levels and extended family structures were associated with lower empowerment levels, while university type and educational level were associated with specific dimensions related to decision-making and the ability to empower others. The explanatory capacity of the models was modest (pseudo-R² = 5.0–12.8%). These findings provide preliminary evidence on the relationship between social determinants and health care empowerment in university students. However, results should be interpreted with caution due to the cross-sectional design and convenience sampling. Future studies using probabilistic sampling and longitudinal designs are needed to confirm these associations.