Introduction Desertification, often misunderstood as the spread of deserts, is in fact a process of land degradation in arid, semi-arid, and dry sub-humid areas due to various factors including climatic variations and human activities. It reduces the productive capacity of land, leading to a loss of biodiversity, livelihood, and economic security. Globally, over 24% of…
Introduction Earth’s climate system is a complex interaction of various atmospheric, oceanic, and terrestrial processes. Among the most influential natural climatic phenomena that disrupt this balance are El Niño and La Niña, collectively known as the El Niño-Southern Oscillation (ENSO). These irregular periodic variations in sea surface temperatures (SSTs) and wind patterns in the central…
Introduction In recent decades, the frequency and intensity of natural disasters have escalated dramatically across the globe. These disasters—ranging from cyclones, floods, earthquakes, wildfires, and droughts—are increasingly linked to the growing impacts of climate change. Rising global temperatures, melting glaciers, erratic rainfall, and rising sea levels are not only environmental challenges but also catalysts for…
Introduction The Himalayas, often referred to as the “Third Pole,” are home to the largest concentration of glaciers outside the polar regions. These glaciers are vital for sustaining perennial rivers such as the Ganga, Yamuna, Indus, and Brahmaputra. However, in recent decades, the Himalayan glaciers have been retreating at an alarming rate, threatening not only…
Introduction Soil is the cornerstone of agricultural productivity, biodiversity, and ecological balance. In a country like India, where nearly 58% of the population depends directly on agriculture for their livelihood, soil health becomes a critical issue. However, soil degradation—characterized by the decline in soil quality due to natural and anthropogenic factors—poses a severe threat to…
Introduction Ecosystems are dynamic networks of living organisms and their physical environments. Within these networks, various species coexist, interact, and depend on each other for survival. However, resources such as food, space, and shelter are often limited, leading to potential competition. If multiple species rely on the same resources, competitive exclusion may occur, where one…
Urbanization, the rapid growth of cities, has a profound impact on the local climate, creating unique microclimates that differ significantly from their surrounding rural areas. These urban microclimates are influenced by a complex interplay of factors, leading to a variety of localized weather patterns and environmental conditions. Key Factors Shaping Urban Microclimates Impact of Urban…
Introduction Earth’s dynamic atmosphere is shaped by various forces and factors that govern the movement of air and water. One of the most fascinating yet often misunderstood phenomena influencing atmospheric circulation and ocean currents is the Coriolis Effect. Named after French mathematician Gaspard-Gustave de Coriolis, this effect is not an actual force but an apparent…
Introduction Urbanization is a defining characteristic of the 21st century. As the global population continues to rise, more people are moving from rural areas to urban centers in search of better opportunities, economic growth, and modern lifestyles. One of the most significant outcomes of this demographic shift is the rise of megacities — urban areas…
Introduction Disasters—natural or man-made—have profound and wide-reaching consequences across various sectors of society, from health and infrastructure to agriculture, education, and industry. While overarching disaster management frameworks provide foundational principles and strategies, sector-specific guidelines are essential for translating these principles into actionable, context-sensitive measures tailored to individual sectors. These guidelines are crucial in reducing vulnerabilities…