Taming Twin Tornadoes
Every time a jet airplane flies through the sky, it creates two invisible tornados. They're not the kind of tornados that strike in severe weather. These tornados are called vortices and can cause problems - similar to the problems tornados on the land…
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What Causes Ice Ages....Or Global Warming?
We know from the rock record and cores taken from polar ice caps that periods of global cooling (ice ages, or…
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The Mineral Chalcedony
Chalcedony is a catch all term that includes many well known varieties of cryptocrystalline quartz gemstones.…
Geology
1816 - The Year Without A Summer
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