On the morning of November 14, 1963, sailors south of Iceland saw something that looked at first like a ship on fire. A dark column was rising from the North Atlantic. It was not smoke from a vessel but volcanic ash and steam, blasted upwar...
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High on a mountain in late spring, a patch of snow can suddenly look as though someone spilled watermelon juice across it. The surface turns pale pink, rose red or even crimson, sometimes st...
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There is a point in an Arctic winter when ordinary ideas about daytime stop being useful. The sun may skim the horizon without properly rising, snow can turn blue in the long twilight, and a...
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From the road near Fish Lake in central Utah, Pando looks like an ordinary mountain forest. Thousands of pale trunks rise from the ground. Their leaves tremble in the slightest breeze, turni...
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Interesting facts about the Ice Age? The Ice Age is a period of time during which the Earth underwent a significant decrease in global temperatures, causing the formation of glaciers and cov...
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Why does the pool water turn green? The pool water turns green due to the proliferation of algae. Algae are plant organisms that grow in water and feed on nutrients such as phosphorus and ni...
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