Geography

EARTH'S MAGNETIC FIELD: REVERSALS AND IMPLICATIONS

Recent research shows Earth’s magnetic field reversals can last 70,000 years, far longer than previously thought. This prolonged weakening of our magnetic shield threatens LEO satellites, global power grids, and ecosystems with intense cosmic radiation and navigational chaos.

ICE PATCHES ON MELTING GLACIERS IN THE HIMALAYAS

An ISRO study on the August 2025 Dharali flash flood identifies the collapse of exposed ice patches in nivation hollows—driven by rapid deglaciation and global warming—as a critical new cryospheric hazard, necessitating that India’s NDMA expand its satellite surveillance and early warning systems beyond traditional GLOF monitoring to protect high-altitude regions.

Temperature Spikes Lead to Change in El Nino Labelling

Scientists at the National Oceanic and Atmospheric Administration revised El Niño detection, adopting a rolling baseline to adjust for ocean warming and avoid false positives. The shift improves monsoon forecasting for India, aiding agriculture and inflation management, after shocks like 2023–24 heatwaves and sugar shortages.

FRESHENING OF THE SOUTHERN INDIAN OCEAN: CAUSES AND IMPACTS

A new study finds rapid freshening in the Southern Indian Ocean due to warming-driven wind shifts moving water from the Indo-Pacific Freshwater Pool. This creates stratification that traps heat, blocks nutrients, harms fisheries, may weaken AMOC, and heighten cyclones and marine heatwaves.

WORLD SOIL DAY,2025

World Soil Day, observed on 5 December, highlights soil’s vital role in sustaining food systems, climate stability, water regulation and biodiversity. With nearly one-third of global soils degraded and India facing significant land decline, the day underscores the need for scientific soil management, grassland restoration, and farmer-led stewardship. It serves as a reminder that soil is a living resource requiring urgent protection to secure livelihoods, ecological health and long-term sustainability.

DURAND LINE DISPUTE : HISTRORICAL ROOTS & CONTEMPORARY CHALLENGES

The Durand Line, drawn in 1893 between British India and Afghanistan, remains a deeply contested boundary due to questions of legitimacy, ethnic divisions and competing territorial claims. Pakistan treats it as its formal international border, while Afghanistan—under successive regimes—refuses to recognise it. This unresolved dispute fuels cross-border militancy, strains Af-Pak relations, and contributes to wider regional instability, with implications for India’s security and strategic engagement in Afghanistan and Central Asia.

FOREST SURVEY & IMPORTANTCE OF ARAVALI HILLS

CYCLONE SENYAR HITS SUMATRA, INDONESIA

Cyclone Senyar, the first November cyclone to hit Indonesia, made landfall on Sumatra on November 26, 2025. Formed unusually in the Malacca Strait, it rapidly intensified to 70–90 km/h, highlighting the growing impact of climate change and warming seas on rare regional cyclogenesis.

DAIRY DEVELOPMENT IN INDIA : CHALLENGES, POLICIES & FUTURE PROSPECTS

India’s dairy sector, anchored by initiatives like Operation Flood, Rashtriya Gokul Mission, NAIP, and White Revolution 2.0, has transformed the country into the world’s largest milk producer. It supports over 80 million farmers, empowers women through cooperatives, ensures nutritional security, and drives rural livelihoods. Ongoing reforms in infrastructure, breeding, sustainability, and GST rationalization aim to enhance productivity, promote inclusive growth, and strengthen India’s global competitiveness in dairy.

ETHIOPIA VOLCANO ERUPTION HAYLI GUBBI

The sub-plinian eruption of Ethiopia’s Hayli Gubbi volcano sent a stratospheric ash plume toward India via subtropical jets, threatening aviation and engines. Its sulphur dioxide release may cause brief global cooling. The event highlights the need for stronger international monitoring and exposes aviation and ecosystem vulnerabilities.

TYPHOON KALMAEGI IMPACT AND RESPONSE

Typhoon Kalmaegi, a Category 3 storm, caused widespread floods and landslides in Cebu, Philippines. This disaster, following recent earthquakes, prompted a national state of calamity, highlighting the Philippines' growing vulnerability to climate-related events.

AVALANCHE RISK RISING WITH CLIMATE CHANGE

Climate change is increasing avalanche risks in the Himalayas. Rising temperatures and erratic weather destabilize snow and thaw permafrost, causing frequent avalanches. India must strengthen forecasting, disaster response, structural safeguards, and community preparedness to build resilience against this escalating climate threat.