Tag: geography

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Addressing Coastal Erosion: Challenges and Solutions

Syllabus: Geography/Environment Source: The Hindu Context: Coastal erosion in Tamil Nadu is increasingly threatening livelihoods and infrastructure due to both natural processes and human interventions.   What is Coastal erosion? It refers to the loss of coastal land due to the action of waves, currents, and human activities.   Examples: Tamil Nadu, with India’s second-longest …

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Atmospheric Rivers: ‘Flying Rivers’ Causing Devastating Floods

Syllabus: Geography: Atmosphere Source: BBC  Context: Heavy rains and floods have recently affected several parts of India, killing scores and displacing thousands. These floods are exacerbated by “flying rivers,” or atmospheric rivers.   What are Atmospheric rivers? These are long, narrow bands of water vapour in the atmosphere that transport moisture from the tropics to …

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Union Budget 2024-25: Transit Oriented Development (TOD) for 14 large cities

Syllabus: Geography/ Goverance Source: LM   Context: The Union Budget 2024-25 highlighted Transit Oriented Development (TOD) for 14 large cities with populations over 30 lakhs.   What is Transit Oriented Development (TOD)? Transit Oriented Development (TOD) is an urban planning approach that focuses on creating compact, walkable communities centered around high-quality public transport systems. It …

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World Mangrove Day: Conservation Success in India Amidst Challenges

Syllabus: Environment Conservation  Source: DTE Context: July 26 is International Day for Conservation of Mangrove Ecosystems, declared by UNESCO to raise awareness and promote sustainable management of mangroves, vital for coastal protection, storm mitigation, and carbon sequestration.   About International Day for the Conservation of the Mangrove Ecosystem Celebrated annually on July 26, this day …

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Urban Transformation Strategies in the Union Budget 2024-25

Syllabus: Geography/ Governance: Urban Governance Source: PIB Need for Urban Transformation Strategy Increasing Urban Population: Currently, urban areas constitute ~35% of India’s population; Expected to grow to 53% by 2047. Economic Contribution: Urban centres contribute ~66% to the national GDP; Expected to reach 80% by 2050. Key Issues: Infrastructure deficit. Rapidly deteriorating environment, including air …

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Rogue waves

Source: IE Context: Researchers have developed an AI program that predicts rogue waves by analysing data from 172 ocean buoys. it is  defined as waves twice the size of surrounding waves, pose significant threats to ships, coastal infrastructure, and human lives. Traditionally unpredictable, these waves form when swells from distant weather systems converge or when …

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Denisovans

Source: TH Context: A study reveals that Denisovans, an extinct human species, occupied the Tibetan Plateau 160,000 years ago. Bone remains found in Baishiya Karst Cave indicate Denisovans survived there for millennia, enduring both cold and warm periods between the Middle and Late Pleistocene eras. The research team analysed over 2,500 bones from the cave, …

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Aphelion Point

Source: IE  Context: Recently, Earth has reached aphelion. What is Aphelion Point? Aphelion is when Earth is farthest from the Sun in its elliptical orbit, approximately 152 million kilometres away. This occurs annually in early July, contrasting with perihelion in early January when Earth is about 147 million kilometres close. Despite the 5 million kilometre …

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Palm Trees

Source: DTE Context: Odisha plans to plant 1.9 million palm trees and restrict cutting to reduce lightning deaths, targeting areas heavily affected during pre-monsoon and monsoon seasons. Palm trees are part of tropical forest ecosystems and include varieties like Coconut, Oil Palm, Arecanut, and Palmyrah. Palmyrah is the State Tree of Tamil Nadu. They act …

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India’s Geological-Heritage Sites

Syllabus: Geography/ Arts and Culture  Source: Context: India’s extensive geo-heritage, ranging from towering peaks to coastal plains, reveals a rich geological history. Despite this, the country’s regard for its geo-heritage is poor.   About Geo-heritage Sites:  Geo-heritage refers to the geological features which are inherently or culturally significant offering insight into earth’s evolution or history to earth science or that can be …

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