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Antarctica vs. the Arctic: Why Are the South and North Poles So Different?

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At the northernmost and southernmost ends of the Earth lie vast worlds of ice. These are the Arctic and the Antarctic. On a map, the two regions appear quite similar. They lie at opposite ends of the Earth’s rotational axis, and both are characterized by extreme environments dominated by snow and ice. Yet a closer look reveals that they are remarkably different. At the heart of the Arctic lies an ocean, while at the heart of the Antarctic lies a continent. This seemingly simple geographical difference has shaped not only their climates and ecosystems but also human settlement, politics, and issues surrounding natural resources in fundamentally different ways. Interestingly, the locations and research activities of South Korea’s Dasan Arctic Research Station, King Sejong Station, and Jang Bogo Station are also closely connected to these geographical differences between the polar regions. So, what exactly makes the Arctic and the Antarctic so different? Two Worlds of Ice That Look Alike ...
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Why Did Nepal’s Great Floods Happen? ― How Himalayan Debris Flows Shaped the Ganges Plain and the Geography of the Indus Civilization

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The Himalayas are one of the most dynamic natural environments in the world. Formed by the collision of the Indian and Eurasian tectonic plates, this vast mountain range continues to rise even today. At the same time, monsoon rains, snow, glaciers, and rivers are constantly eroding its towering mountains. As a result, the Himalayas are a place where mountains are being built and broken down at the same time. Disaster and Prosperity Born in the Himalayas The recent large-scale flash flood in the Rasuwa region of north-central Nepal, near the border with Tibet, China, is another event that illustrates the dynamic nature of the Himalayas. The Himalayas and the Rasuwa Flood Area in Nepal However, it is difficult to explain this event simply as “a flood caused by heavy rainfall.” In high mountain regions, large-scale movements of water, rock, and sediment can travel down valleys and river channels, triggering debris flows, blocking rivers, forming natural dams, and eventually producing sudd...
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