.... on a monitor. In order to feel this so-called realityyou have to wear special electronic glasses and an electronic suit. Fastened tothe suit are sensors, which send information to the main computer. Thiscomputer works with the data and displays them on the electronic spectacles. This is a technique which use three-dimentional views, therefore the scenery seems incredibly realistic. If you want to be a boxer, simply change thescenery on the main computer, and you are in the ring.Today, many kids have got video games. You could say these games are thepresent's answer to ludo .....

.... species evolve before the Cretaceous- Tertiary extinction 65 million years ago. BEHAVIOR: Triceratops was probably a herding animal, like the other Cartesians. This hypothesis is supported by the fining of bone beds, large deposits of bones of the same species in am area. Triceratops hatched from eggs, which may have been cared for by adults. Which threatened by predators, Triceratops probably changed into its enemy, like the modern-day rhinoceros does. This was probably a very effective defense. DIET, TEETH, ADN TRICERATOPS POSITION IN THE FOOD CHAIN: Trice .....

.... a journalist, and wrote for and edited the The New Yorker . Abbey and McKibben write differently but they are bonded in that they both demand change. Abbey and McKibben would agree that something is wrong with America’s attitude toward the environment. However, Abbey’s writing invites doing battle with those who invade the forests while McKibben simply tries to point out that there is a problem and that something radical must be done to eliminate it at its base. Abbey’s essay, Eco-Defense, and McKibben’s essay, Not So Fast both ask the reader to .....

.... pol, env, pre-core and X that respectively encode the viral DNA-polymerase, envelope protein, pre-core protein (which is processed to viral capsid) and protein X. The function of protein X is not clear but it may be involved in the activation of host cell genes and the development of cancer. Hepatitis B is a serious public health problem that affects people of all ages in the United States and around the world. Each year, more than 240,000 people contract hepatitis B in the United States. A highly infectious virus that attacks the liver causes the disease. (HBV) infection .....

.... each account for 2 to 3 percent of all cases. The first, translocation, takes place when a child inherits an extra piece of chromosome 21 attached to a different chromosome. The second, called mosaic Down syndrome, results when only some cells in the body have the extra chromosome. There is no cure for Down syndrome although prenatal tests are available to identify fetuses with the disorder. Down syndrome can be diagnosed just by looking at the baby at birth. The facial features and characteristics can tell you that. If the attending physician suspects Down syndrome, a karyotyp .....

.... bombardment period. During this period the intercrater plains formed. Then Mercury cooled. Its core contracted which in turn broke the crust and produced the prominent lobate scarps. During the third stage, lava flooded the lowlands and produced the smooth plains. During the fourth stage micrometeorite bombardment created a dusty surface also known as regolith. A few larger meteorites impacted the surface and left bright rayed craters. Other than the occasional collisions of meteorites, Mercury's surface is no longer active and remains the same as it has for millions of years .....

.... At first, NASA could only work within the agency’s estimated $8.5 billion dollar budget. It was in 1984 when the first construction plan was unveiled, called “Freedom.” A “power tower” concept was designed, which is a long slender unit that would be the center of the entire structure. This tower would be a long, narrow piece of latticework, chosen for its stability and to avoid the use of every day thrusts to maintain its altitude. All the laboratory modules would then surround the “power tower.” A free-flyer module woul .....

.... more parochial (meaning practical) than political - a refreshing thought. "Honey, your fire has escaped.!" "There's no guarantee you'll not get a big rip," (see terminology sidebar, page 57) says a Forest Service fire officer on the eastern seaboard. "When you're messing with fire, there's always a chance one will escape," echoes his counterpart in California's Sierras. "The fuels are tricky..." adds Ron Meyers, who directs prescribed fires for The Nature Conservancy from his base in Florida. Such concerns are real. Paul Tine, acting Forest Service fuels specialist for the s .....