Earth and Space

 


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Mount Rushmore

Over 2.5 million people a year visit Mount Rushmore in the Black Hills of South Dakota, where the world's largest presidential statues gaze at them through eyes 11 feet across. The sculpted heads of W …


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Ozone

Ozone is a gas, a form of oxygen, that is found in the layers of the atmosphere, most predominantly in the stratosphere. Here, 90% of the atmosphere's ozone is distributed in a ratio of five ozone mo …


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Panning for Gold


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Permafrost

The permafrost tunnel 10 miles north of Fairbanks, Alaska, is called a "chilly, smelly time machine" because it exposes permafrost layers dating from 11,000 to more than 30,000 years ago. These layers …


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Phases of the Moon

What you see when you look at the moon depends on its location in relationship to the sun and Earth. The moon never goes away or changes shape-we just see a different fraction of sunlight being reflec …


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Solar Eclipse

Eclipses have frightened, mystified and puzzled man since antiquity. The Chinese believed that an eclipse was caused by the celestial dragon eating the Sun. Tablets found in northwestern Mexico show …


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Soviet Space

Achievements in space exploration have had an impact on science and technology around the world. The study and exploration of space is a quest for excellence and adventure, as well as a thirst for un …

You step outside on a crisp, clear night and gaze up at a sky full of sparkling stars. You wonder which one to wish upon--they're all beautiful, but so far away. Why not try wishing upon the star that …


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Wind Blow

Anyone who has ever lived through the fury of a hurricane or witnessed the destructive power of a twister knows just how much punch the wind can pack! What many people don't realize is that when they …


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