A few years ago, a company called Space Marketing came up with a plan to send a mile–long advertisement into space. To advertising agencies (机构), it would have been “a dream come true”. However, advertising standards agencies finally decided not to allow Space Marketing to go ahead with their plans and they were forced to give them up.

    Space may indeed be the final place for advertisers, because on Earth we are already surrounded by advertising wherever we are and whatever we are doing. Apart from the obvious adverts that we see every day on TV, and in newspapers and magazines, there is a whole 'other world' of advertising messages for our attention. There are ads that we see on the side of the bus we catch to work, for example. And what about the logos (商标) we see on the clothing of the people we walk past in the streets?

    Most of the time, we are probably not even aware of (意识到的) these less obvious advertising methods, but that doesn't mean that they don't work. Take 'product placement', for example. You are in a cinema, watching the latest Hollywood movie. Look carefully at the make of car your favorite actor is driving. And what about his watch? Can you see what brand it is? Chances are, you can, and the company that owns the brand is likely to have paid thousands for it to appear in the film.

    So, whether Space Marketing finally succeeds in sending ads into space or not is perhaps less important than it might seem. This would not change a thing. Our everyday lives are already strongly influenced by advertising whether we realize it or not.

    Did you know that the color of uniforms can influence the performance of an athlete? It may sound strange, but a study suggests this might be true.

    Two British scientists studied the results of four sports in the 2004 Athens Olympic Games where the athletes had been given either a red or a blue uniform. They discovered that when there was a big difference in the score, color had no influence on the result. But if it was a close match, the athlete in a red uniform was more likely to win. Then they looked at the uniforms of the soccer teams at the Euro 2004 tournament. Again, teams wearing red won more games.

    The two scientists got their idea from earlier studies of wild animals. It had been discovered that when a male show red on its body, it sends a signal of its power and strength. For example, in many kinds of monkey, the more the male shows off its red scare, the more females it can attract

    Based on this fact, the British scientists thought that the idea might work for humans, too. According to them, when an athlete sees a competitor in a red uniform, he gets a feeling that his competitor could be stronger than him. And that kind of feeling may have a bad influence on the player's performance in the actual game.

    Although the idea is Interesting, most people don't accept that color signals in the animals world can really be useful to humans in sports. They think that it is unreasonable to develop an Idea based on such a small number of examples. Much more research has to be done to prove the influence of uniform colors on the performance of athletes.

    While both Europe and the United States of America are considered the Western world, it's good to know there are some differences in culture. If you are considering moving to a European country, you will find the information below helpful as you plan your move.

    One cultural difference is how the countries perceive（感知）time and space. For example, a house in the United States that is 200 years old would be considered ancient. This is probably because America is a fairly young country. However, in Europe, something would not be considered ancient unless it was at least 2,000 years old. However, perception of distance seems to be the opposite. While Europeans would consider 100 kilometers a long way to drive, Americans would think twice. This could be due to the fact that Europe is smaller and more heavily populated. In fact, the United States is over twice the size of Europe.

    Cars are another factor that differs greatly between Europe and the United States. American automobiles usually have automatic transmissions（传动）while European cars generally have manual gears（手动变速器）. European automobiles are smaller and more round-shaped, while American cars are larger and more square-shaped. Trucks and limousine are vehicles that American enjoy. In Europe, however, these types of vehicles are hardly seen, as they prefer smaller cars due to parking and traffic congestion.

    The view of education is another cultural difference between the European countries and the United States. In America, parents may save for many years and even go into debt to pay for their children to attend college. Most schools and universities in Europe, however, are free of tuition. In fact, it is just expected for children to attend college there and not a privilege（特权）, as in the United States.

    Water is very important to living things. Without water there can be no life on the earth. All animals and plants need water. Man also needs water. We need water to drink, to cook our food and to clean ourselves. Water is needed in offices, factories and schools. Water is needed everywhere.

    There is water in seas, rivers and lakes. Water is found almost everywhere. Even in the desert part of the world, there is some water in the air. You can't see or feel it when it is a part of the air. The water in the seas, rivers and lakes is a liquid, the water in the air is a gas, and we call it water vapor (蒸汽).

    Clouds are made of water. They may be made of very small drops of water. They may also be made of snow crystals(结晶体). Snow crystals are very small crystals of ice. Ice is frozen water. It is a solid. There can be snow and ice everywhere in winter.

    Water may be a solid or a liquid or a gas. When it is a solid, it may be as hard as a stone. When it is a liquid, you can drink it. When it is a gas, you can not see or feel it.

    "Hey, little boy, will you support me when I'm getting old?" Wang Wenshan, 35, asked his newborn baby as he hugged him at home.

    The Chinese tradition of raising sons to support parents in their old age has been weakened by the rapidly growing economy and improved standard of living. As is the case with more and more developed countries, China faces an aging society. People are living longer and having fewer children. Therefore, many Chinese families are falling into a 4-2-1 family pattern: a couple raises one child and supports four elderly parents. But few realize that a problem is likely to happen ahead.

    The aging of the population is a trend that now affects a growing number of countries. The Information Office of the State Council, China's cabinet, issued（发行） a white paper on measures China has been taking to help its elderly population. The paper said China's population entered the aging period at the end of the 20th century and the proportion of people aged 60 and above accounted for over 10 percent of the entire population. By the end of 2005, China had nearly 144 million people over 60, accounting for 11 percent of the population, according to the white paper.

An expanding aged population inevitably means that many issues must be settled, as the problem concerns every aspect of society. It puts more pressure on each family, causing disturbing economic consequences and serious social problems. It also challenges the labor force supply and the pension system.

    "I used to think that it's not an issue for me to provide for the aged," said Wang, whose parents and parents-in-law all enjoy pensions and medical insurance. But last year Wang's father suffered from a serious illness and afterward Wang began to feel the pressure on his shoulders.

    After his father recovered, Wang opened a bank account for each parent and put away some money in the account every month to prepare for future uncertainties. In addition, he has to save money every month to provide for his son's future education. "I'm now breaking my back to support my family: saving pensions for the parents, my son's education funds, and living costs."

    Wang also bought some commercial old-age insurance for himself. "We have to take precautions（预防） before it is too late, and many of my colleagues share the same view," he said.

    ARCHAEOLOGISTS (考古学家) GUIDED BY laser images of a remote region of northern Guatemala have discovered 20-foot-high walls, watchtowers, and other evidence that ancient Maya societies had been annoyed by warfare threat over many years. The finds have upended long-established impressions of a civilization that it tamed the jungle and built thriving cities, then declined and disappeared quietly beneath the dense tropical forest.

    Among the most surprising discoveries was a large stone complex now called La Cuemavilla. Built on a steep ridge, the heavily fortified site included high walls. Moats which serves as the largest defensive system ever discovered in the region.

    This was surprising says an archaeologist, because we had a tendency to romanticize Maya warfare as something that was largely ritualized. But the fortifications were seeing suggest an elevated level of antagonism over centuries. Rulers were so deeply alarmed that they felt the need to invest in all these hilltop fortifications. There is an almost visible sense of fear in this landscape.

    All these findings owe credit to PACUNAM LIDAR Initiative, a laser survey of some 800 square miles of the Maya Biosphere Reserve in northern Guatemala. Using revolutionary Laser technology, the survey revealed the long-hidden ruins of a sprawling pre-Columbian civilization that was far more complex and interconnected than most Maya specialists had supposed.

    Guided by the new Laser treasure maps, the LIDAR team deployed through the jungle over the past year to conduct hands-on investigations of more than a dozen of the most promising sites-most of which would have been imperceptible without LIDAR.

    "You could walk over the top of a major ruin and miss it, "says an archaeologist who's part of the PACUNA project. But LIDAR picks up the patterns and makes the features pop out with surprising clarity.

    Three-dimensional maps generated by the survey yielded surprises even at Tikal, the largest and most extensively explored archaeological site in Guatemala. The ancient city was at least four times bigger than previously thought, and surrounded by a massive ditch and fortified base stretching for miles.

    Archaeologists stress that LIDAR, for all its utility, will never see below the ground or yield direct dates of occupation. "We still need to dig and hack our way through the jungle, but now we have a very accurate map to guide us."