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As the Spanish entered the capital city of Tenochtitlan they were astounded at the many marvels of the city but one of the things that most caught the eyes of the foreigners was the extensive plant growth on the lake surrounding the city. These images were describe the among the first recorded descriptions of large scale maricul...
ANXIETY DISORDERS Anxiety is a normal reaction to a threatening situation and results from an increase in the amount of adrenaline from the sympathetic nervous system. This increased adrenaline speeds the heart and respiration rate, raises blood pressure, and diverts blood flow to the muscles. These physical reactions are appropriate for es...
The complexity of the human reproductive system is unbelievable baffling. The fact that the egg even leaves the protection of the ovary and starts its journey down the fallopian tube is remarkable. The process by which the sperm manage to scurry their way to meet the egg through the hostile environment of a woman's body isanother great accompli...
Evolution In Africa Humans, as we consider ourselves, evolved in Africa. Not entirely, but from early primates to our present state. Many people dispute this fact, despite astounding evidence supporting the theory, for various reasons. Showing all the genetic, paleological, and geological proof, I find it very hard indeed to contradict...
Computer hackers in today?s world are becoming more intelligent. They are realizing that people are developing more hack-proof systems. This presents the hackers with a bigger challenge, which brings out more fun for them. The government is realizing this and needs to make harsher laws to scare the hackers more. With the increase i...
Radioactive wastes, must for the protection of mankind be stored or disposed in such a manner that isolation from the biosphere is assured until they have decayed to innocuous levels. If this is not done, the world could face severe physical problems to living species living on this planet. Some atoms can disintegrate spontaneously....
History of Birth Control Although birth control has been practiced since ancient times, the first organized efforts developed during the 19th century as population increased dramatically because of improved medical care, nutrition, and sanitation. However, birth control met with resistance. In 1873 the United States Congress enacted the Co...
Growing Transitions 3 I Introduction In the United States of America, one to three percent of the school age population have the full attention deficit (hyperactivity) Disorder syndrome (Internet site 1). This numerical figure may not seem to convey a need for enlightenment on this disability. As an attention deficit disorder child (...
Place In Periodic Table Phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi) form a group of four elements in Group 5A of the periodic table. They exhibit increasing metallic properties going down the group. Nitrogen (N), which heads the group, is a colorless, odorless, and tasteless gas. Phosphorus is a highly reactive nonmetal...
Digestive Disorders Amebic Dysentry is a disorder in which there is an accumulation of pus located in the liver. This is usually caused by an internal parasite or organism. When dealing with this liver disease there are a few symptoms to look out for. Jaundice, which is something that will make your skin and eyes go yellow is a...
Genetic Engineering and its Future Impacts on Society Genetic Engineering, the process of editing the genetic structure of a living organism, is most likely the most power science in existence. With this technology one can literally create life, change life, and formulate life to service the creator. Genetic Engineering is the most useful,...
Flowers fold their petals; plants fold their leaves as evening falls. With the exception of owls and their nighttime predators, the creatures of land, sea, and air curl up into their bedroom niches in the rocks, trees, and sand. Dawn comes and the unfolding begins. The outside world, which has been barred from the senses of the sleepers, is...
The Greenhouse Effect and Global Warming Recently, global warming has moved to a serious scientific issue. Because sunlight is constantly falling on the earth, the law of physics say that the planet has to radiate the same amount of energy back into space. Infrared radiation is sent out by the earth through the atmosphere, where molecul...
L A S E R S Did you know that some laser beams are small enough and powerful enough to drill two hundred holes on a spot as tiny as the head of a pin? The first major advancement in laser development came in 1954. This was the year that Charles H. Townes, an American physicist, created a device that amplified microwaves. This device w...
