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Carbon Dating From The Skies

Determining the age of relatively recent fossils, those of plants and animals that lived tens of thousands of years ago, is not a guessing game but an exact science. By using carbon dating we can determine their age to within few years. Carbon dating is a technique where by measuring the residual carbon-14 concentration of the fossil and comparing ...

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CarbonDatingFromTheSkies
Biology

Butterflies In Your Brain

The idea behind chaos theory is that complex systems have an inherent element of unpredictability. The human brain certainly qualifies as a complex system. It is also a chaotic system. It does not ... Continue reading

ButterfliesInYourBrain
Medicine

The Neurological Complications Of Lyme Disease

Lyme disease is caused by a bacterial organism that is transmitted to humans via the bite of an infected tick. Most people bitten by an infected tick develop a characteristic skin rash around the area ... Continue reading

LymeDisease
Biology

Why Do Leaves Change Color In The Fall?

Every fall the leaves of many trees turn magnificent colors. One of the great benefits of the season is looking at the fall foliage, with its bright reds, oranges and purples, before the leaves fall ... Continue reading

WhyDoLeavesChangeColorInTheFall
Biology

Wetlands Top Ecosystem

Wetlands are areas where water covers the soil, or is present either at or near the surface of the soil all year or for varying periods of time during the year, including during the growing season. ... Continue reading

Wetlands

When Chlorine Met Sodium...

WhenChlorineMetSodiumSodium is a required element in human physiology. The eleventh element in the periodic table, sodium is a soft, silvery white metal that can be easily cut through with a paring knife. It is highly reactive, and reacts readily and vigorously with water to produce sodium hydroxide, giving off a great deal of heat in the process. It would react as vigorously and more with body fluids and stomach acid.

Chlorine is a required element in human physiology. The seventeenth element in the periodic table, chlorine is a pungent, yellowish-green gas that has been used as an agent of chemical warfare. It causes blindness on contact, blistering, pulmonary edema, and destroys the lining of the lungs. It is commonly used as a bleaching agent because of its ready ability to eliminate unwanted colors and odors by destroying the molecules responsible for them.

When metallic sodium and chlorine gas are allowed to come into contact with each other, a very energetic reaction occurs in which the sodium metal actually bursts into flame. The union of these two elements produces one of the most innocuous materials known: sodium chloride, common table salt.