… Richard Trevithick introduced the steam locomotive on 21 February 1804 in Wales, it achieved a speed of 8 km/h (5 mph). In 1815, Englishman George Stephenson built the world's first workable steam locomotive, commissioned by the Killingworth…

… science to a coral reef, pointing out how the living organisms at the surface produce the growth of the reef on top of tens of hundreds of feet of skeletons of organisms that have long since died. The life of the reef is only at its surface; the…

… around the world. This technology makes it possible for people to access valuable information through millions of sites that have been created by people willing to share there personal knowledge. This technology also allows people to communicate with…

… Circulation The cardiovascular system is an elaborate network that performs 2 major tasks. Firstly it delivers oxygen and nutrients to body organs and secondly it removes waste products of metabolism from tissue cells. The major components of…

… has been known ever since the early 1800’s. Botulism received its name from “Botulus”, the Latin word for sausage; because of a wave of poisoning from contaminated sausages. Though there haven’t been any major epidemics in history for botulism,…

… wondered what made them tick, what drove them to what they are today? What is a hacker? A hacker is one who breaks forcefully into a computer to retrieve data or learn about his victims who have no idea their victims YET. But can a hacker really be…

… each vital to normal vision. The ability to see clearly depends on how well these parts work together. Light rays bounce off all objects. If a person is looking at a particular object, such as a tree, light is reflected off the tree to the…

… that causes gradual loss of memory as well as the loss of language skills, and eventually the inability to care for oneself. This disease affects about 10 percent of the American population over the age of 45, and approximately 45 percent of America’s…

… he dared to ask why. Nicholas Copernicus, one of the extraordinary astronomers of his time, began a revolutionary way of thinking about the heavens. He established a heliocentric view to explain why things occur the way that they do. What we now…

… for people in today’s society. People are increasingly concerned about ways to contact the Aids virus, its symptoms, and prevention's. Knowing the risk and recognizing the symptoms will enable them to protect his or herself from…