A Quick Guide To Gliders
A glider is a special kind of aircraft that has no engine. Paper airplanes are the most obvious example, but gliders come in a wide range of sizes. Toy gliders, made of balsa wood or styrofoam, are an excellent way for students to study the basics of…
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Crater Lake
Crater Lake: overwhelmingly yet sublimely beautiful. Moody. At times brilliantly blue, ominously somber; at…
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Magnitude of an Astronomical Object
'Visual magnitude' is a scale used by astronomers to measure the brightness of a star. The term 'visual' means…
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White Sands National Monument
At the northern end of the Chihuahuan Desert lies a mountain ringed valley called the Tularosa Basin. Rising…
Biology
The Gingerbread Man
Did you know that gingerbread came about because of a smut disease of wheat?