… It may develop suddenly, following a head cold (acute bronchitis), or it may persist or return regularly for many years, causing progressive degeneration of the bronchi and lungs (chronic bronchitis). Certain people are more susceptible than others;…

… and humans caused by a bacterium named Yersinia pestis. People usually get plague from the bite of a rodent flea that is carrying the plague bacterium or by handling an infected animal. Millions of people in Europe died from plague in the Middle Ages,…

… expected to be smaller, faster and smarter. For the past 20 years, CPU performance has doubled about every 18 months. The PowerPC will stay close to this pace for the next 10 years--a nearly 100-fold improvement in that time. The storage capacities…

… applications that run on them basically control a well organized business. Every major company is equipped with a computer, or network that connects through different branches throughout the firm. Computer Hardware: To keep up with…

… with the formula CO. It is a colorless, odorless gas, about 3 percent lighter than air, and is poisonous to all warm-blooded animals and to many other forms of life. When inhaled it combines with hemoglobin in the blood, preventing absorption of…

… bus structures, microprocessor, memories and peripherals (also known as external or I/O devices) are the major components of a computer system. These components constantly trade information and instructions to complete assigned operations.…

… by an impulse to take things apart and put them back together. A small group of maverick scientists have decided to take this process one step further. Their project, called cryonics, aims to take apart and reassemble the world's most complicated…

… that contain Carbon, Hydrogen, and Oxygen. The most basic sugar- carbohydrate is the monosaccharide. Carbohydrate molecules are categorized by the number of carbons present in the molecule. Glucose, the most common monosaccharide has six carbons…

… fathers of psychology. He's been called everything from a sinner to the person who helped revolutionized psychology. After dedicating more than half of his life to psychology he finally received recognition. Carl Jung was born in Kesswil on Lake…

… All organisms are composed of one or more cells. An organism may be a single cell, such as the organisms Van Leewenhoek saw in water. Others, like most of the plants and animals with which you are most familiar, are multicellular, or made up of…