Red Dot Replacing Cross Hairs
A bullet fired from a gun becomes subject to the pull of gravity and begins to fall the instant it leaves the gun barrel. The farther away from the gun the bullet travels, the lower to the ground it gets. To compensate for this, guns are sighted in such a way…
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Engineering
It's A Bird, It's A Plane -- No, It's A Clam!
Not all animals glide or fly in the air. Many marine animals are masters of 'flight' and speed under the…
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Prokaryotic Organisms
It appears that life arose on earth about 4 billion years ago. The simplest of cells, and the first types of…
Geology
The Hole Scoop on Ozone
Ozone is a molecule containing three oxygen atoms. It is blue in color and has a strong odor. Normal oxygen,…
Biology
Beluga Whales
Beluga whales inhabit the Arctic and subarctic regions of Russia, Greenland, and North America. Some…