Science & Technology Essays and Term Papers

strategies for getting food: foraging, horticulture, pastoralism, and agriculture. Each of these four strategies possesses important characteristics. These strategies have also affected other aspects of human societies such as technology, settlement…

acute and uncomfortable contemporary problems in medical ethics. Is Euthanasia Ethical? The case for euthanasia rests on one main fundamental moral principle: mercy. It is not a new issue; euthanasia has been discussed-and practised-in both Eastern…

the drug choice for treating attention deficit/hyperactive disorder (ADHD), has significantly risen since 1990. Up to six percent of all school age American boys are now believed to take Ritalin for symptoms of ADHD. …

the world. Most of the time earthquakes are not strong enough to be felt by people, but the shaking caused by an earthquake is recorded by a seismogram. These are located all over the world at different points. Only occasionally will a larger magnitude…

common medical problem. It is the focus of some debates and even confusion among doctors and the people who suffer from it. Mitral Valve Prolapse is named for a heart valve and is can be diagnosed as a faint heart "click" or murmur. It isn't a form…

is the movement of water molecules from an area of high concentration to a area of low concentration. Osmosis is very useful in real life such as trees. In order for us all to survive we need osmosis. for the trees to suck up all the water. And…

tree to be converted into the sheet of paper, like the one you are reading this essay on, it must go through many processes before the consumer receives the final product. Selected trees, which range from twenty to forty feet, are harvested with all…

as Sweet Valley and Cobb Town have become ghost towns after years of contamination of PCB by the local Monsanto plant. PCB, short for polychlorinated biphenyl’s, are tox-ins that are known to cause cancer in humans. In 1966, the Monsanto company hired…

ice were denser then liquid water. Rivers, lakes, and oceans control much of our climate, because large amounts of water take a very long time to heat up and cool down. So when at the beginning of summer the water is still cold from the winter, and…

America was at war. Thousands of Americans were dieing in a conflict that most people didn’t even understand. Russia was dominating the space race five-one. It seemed America was now at the bottom of the world power spectrum. America needed something…