.... called dietary fibre. Like its fellow carbohydrates, the various types of dietary fibre are the product of sunlight, water and carbon dioxide combining in green plants. Most form part of plant cell walls. But unlike the other carbohydrates, fibres do not break down into sugars in the human digestive system and then course through the blood stream fueling muscles and nerves. Rather, when eaten they tumble intact through the stomach and small intestine and end up in the colon where billions of bacterial feed on them - in turn producing intestinal gas. No wonder, then, that dietary fibre has been unwelcome in many of history's nicer neighborhoo .....

.... lets start with the history of cloning. The modern era of laboratory cloning began in 1958 when F.C. Steward cloned carrot plants from mature single cells placed in a nutrient culture containing hormones. The first cloning of animal cells took place in 1964. John B. Gurdon took the nuclei from tadpoles and injected them into unfertilized eggs. The nuclei containing the original parents’ genetic information had been destroyed with ultraviolet light. When the eggs were incubated, Gurdon discovered that only 1% to 2% of the eggs had developed into fertile adult toads. The first successful cloning of mammal was achieved nearly twenty years l .....

.... In the end, the destruction of the rainforests will mean the destruction of mankind. The devastation of the rainforest may be compared to playing a game of Russian Roulette. One-forth of existing medicines comes from tropical plants whose homes are in the rainforests of South America. For every acre that is lost in the burning season, there is one acre less that we have for possible life saving medicines. About 70 percent of plants used in anti- cancer drug come are the rain forest. We are slowly destroying the environment and ourselves. Whether we realize it or not, the world could quickly come to an ecological stop. Every day .....

.... was made by a group scientist including the physicists Enrico Fermi and J. Robert Oppenheimer, and the chemist Harold Urey, and was in charge by an U.S. Army engineer, Major General Lesle Groves. After the war, the U.S. Atomic Energy Commission became in charge of all nuclear matters, including weapons research. Other types of bombs were developed to tap the energy of light elements, such as hydrogen. In these bombs the source of energy is the fusion process, in which nuclei of the isotopes of hydrogen combine to form a heavier helium nucleus. This weapons research has resulted in the production of bombs that range in power from a fraction of a kilot .....

.... a normal analog phone line, the fastest internet connection available is 56 kb/s (kilobits per second). With DSL, the normal speed is 384 kb/s with the max at 1.1 Mb/s (megabits per second). With DSL, one's computer could be online at all times. There would be no busy signals or dial-in hassles. If someone wanted to look something up on the internet real quick or check their mail, all they would have to do is start their internet browser or email client and they would be set. DSL wouldn't only make our internet experience more enjoyable, but it would also improve the quality and reliability of normal phones. The digital format would be able to rep .....

.... in 1900 Overton performed some simple but classical experiments which proposed that cell membranes were composed of lipids (1). By measuring the permeability of various compounds across the membrane of a frog muscle, Overton found some interesting results. He observed that lipophilic molecules (molecules attracted to fat solvents) could easily cross this cell membrane, however larger lipid insoluble molecules could not. He also observed that small polar molecules could slowly cross the membrane. Other experiments with the likes of hen eggs suggested the presence of a lipid layer in the membrane. These results became known to biologists across the .....

.... will accommodate installation of different focal plane instruments, with in-flight accessibility, provided by investigators selected from the international science community. The Observatory objective is to have an operational lifetime in excess of 20 years. The SOFIA project is in the early full-scale stage. The start of detailed system design is anticipated in the Fall of 1996. The German Space Agency (DARA) is a partner with NASA in the SOFIA project. DARA will provide the telescope and NASA will provide the rest of the facility including the 747 aircraft, aircraft modifications, on-board mission control system, ground facilities and sup .....

.... powder and is slightly soluble in water and freely soluble in alcohol. The phosphate and sulfate salts of codeine occur as white, needle- shaped crystals or white, crystalline powders. Why is it used? Codeine is most useful in the relief of mild to moderate pain. It is also used as a cough remedy because it suppresses the part of the brain that triggers coughing, and as an anti-diarrheal drug, because it slows down muscle contractions in the intestinal wall. There are possible adverse effects. The most frequently observed adverse reactions include lightheadedness, dizziness, sedation, nausea, vomiting, and sweating. These effects seem to be more .....

.... is extensive, you'll see an entire ring. Within the layer of cloud, sunlight is striking and passing through the sides of randomly- oriented ice crystals. As the sunlight passes through each crystal, the light changes direction, or refracts. The radius of the hale depends on the amount of change in the direction of the sun's light. Usually this is 22 degrees. Since the sun is 1/2 of a degree across, the radius of the halo is 44 sun-widths. Occasionally you may see a second halo at 46 degrees from the sun (that is, with a radius of 92 sun-widths). This is produced by sunlight passing through both the side and bottom of each crystal. Moonlight .....

.... Mongolia, who were thought then to have an arrested development. This ethnic insult came under fire in the 1960s from Asian genetic researchers, and the term was dropped from scientific use. Instead, the condition became "Down's syndrome." In the 1970s, an American revision of scientific terms changed it simply to "Down syndrome," while it still is called "Down's" in Europe. In the first part of the twentieth century, there was much speculation of the cause of Down syndrome. The first people to speculate that it might be due to chromosomal abnormalities were Waardenberg and Bleyer in the 1930s. But it wasn't until 1959 that Jerome Lejeune .....