Jumping off random cliffs(悬崖) into the sea is not clever. However, as a sport, coasteering uses local experts to help groups travel around the coast so they can then jump safely and have a lot of fun in the process. But coasteering is also so much more than cliff jumping.

    A usual day's coasteering will involve swimming, climbing, scrambling(攀岩) and cliff jumping. All trips begin with a safety brief and equipment check. You will be equipped with a helmet, wetsuit and life vest. You will need to wear some old sneakers you don't mind getting wet.

    From here it could be a short swim to the first jump site. Following an instructor, you swim through rock pools, around rough rocks and right up to the next jump spot. A brief climb and you'll be standing on the edge wondering, “Why the hell did I agree to this?” Then, and to the yell of your friends, you're leaping in, with a smile that's guaranteed to last the rest of the day.

    Coasteering is certainly more than cliff jumping. If ever a sport could claim to be confidence building, this is it. And it's also a perfect activity for groups of friends or for adventurous families who want to explore the coast. Many companies offer daily trips, so even if you are on your own or a couple you can join in with a large group. Companies use trained guides with much knowledge of local tides and weather conditions. These people lead the show and are qualified lifesavers as well.

    Coasteering is already popular around the UK. At least now you won't have to ask “What is coasteering?” if someone you know gives it a go.

    Because plants cannot move or talk, most people believe that they have no feelings and that they cannot receive signals from outside. However, this may not be completely true.

    People who studied plants have found out that plants carry a small electrical charge (电荷). It is possible to measure this charge with a small piece of equipment called “galvanometer”. The galvanometer is placed on a leaf of the plant, and it records any changes in the electrical field of the leaf. Humans have a similar field which can change when we are shocked or frightened.

    A man called Backster used a galvanometer for his studies of plants and was very surprised at his results. He found that if he had two or more plants in a room and he began to destroy one of them —perhaps by pulling off its leaves or by pulling it out of its pot—then the galvanometer on the leaves of the other plants showed a change in the electrical field. It seemed as if the plants were signaling a feeling of shock. This happened not only when Backster started to destroy plants, but also when he destroyed other living thing such as insects (昆虫).

    Backster said that the plants also knew if someone had destroyed a living thing some distance away, because they signalled when a man who had just cut down a tree entered the room.

    Another scientist, named Sauvin, achieved similar results to Backster's. He kept galvanometers fixed on his plants all the time and checked regularly to see what the plants were doing. If he was out of the office, he telephoned to find out about the signals the plants were sending. In this way, he found that the plants were sending out signals at the exact times when he felt strong pleasure or pain. In fact, Sauvin could cause a change in the electrical field of his plants over a distance of a few miles simply by thinking about them.

    Few laws are so effective that you can see results just days after they take effect. But in the nine days since the federal cigarette tax more than doubled-to $1.01 per pack-smokers have jammed telephone "quit lines" across the country seeking to kick the habit.

    This is not a surprise to public health advocates. They've studied the effect of state tax increases for years, finding that smokers, especially teens, are price sensitive. Nor is it a shock to the industry, which fiercely fights every tax increase.

    The only wonder is that so many states insist on closing their ears to the message. Tobacco taxes improve public health, they raise money and most particularly, they deter people from taking up the habit as teens, which is when nearly all smokers are addicted. Yet the rate of taxation varies widely.

    In Manhattan, for instance, which has the highest tax in the nation, a pack of Marlboro Light Kings cost $10.06 at one drugstore Wednesday. In Charleston, S.C., where the 7-cent-a-pack tax is the lowest in the nation, the price was $4.78.

    The influence is obvious.

    In New York, high school smoking hit a new low in the latest surveys-13.8%, far below the national average. By comparison, 26% of high school students smoke in Kentucky. Other low-tax states have similarly depressing teen-smoking records.

    Hal Rogers, Representative from Kentucky, like those who are against high tobacco taxes, argues that the burden of the tax falls on low-income Americans "who choose to smoke".

    That's true. But there is more reason in keeping future generations of low-income workers from getting hooked in the first place. As for today's adults, if the new tax drives them to quit, they will have more to spend on their families, cut their risk of cancer and heart disease and feel better.

    Sometimes people call each other “scared-cat”. But have you ever thought about this expression? When a cat is frightened, its heart starts beating faster, its muscles get tense, and there are changes in the chemicals in its blood stream. Although the cat doesn't realize this, its body is getting ready for action. If the danger continues, the animal will do one of two things .It will protect itself, or it will run away as fast as it can.

    Something like this also happens to people. When we are excited, angry or seared by other feelings, our bodies go through many physical changes. Our hearts beat faster, and our muscles get tense. All of these changes make us more alert and ready to react. We, too, get ready to defend ourselves or run.

    Human beings, however, have a problem that animals never face. If we give way to our feelings and let them take over, we can get into trouble. Have you ever said something in anger or hit somebody and regretted it later? Have you ever shouted at a teacher, told someone you were lonely, or said you were in love, and then wished later you had kept your mouth shut? It isn't always clever to express your feelings freely.

    Does this mean that it's smarter always to hide our feelings? No! If you keep feelings of anger, sadness hidden away or bottled up inside, your body stays tense. Physical illnesses can develop, and you can feel disturbed badly inside. It can actually be bad for your health. It isn't good to keep pleasant feelings inside either; all feelings need to be expressed.

    Feelings that you keep all bottled up inside, don't just go away. It's as if you bought some bananas and put them in a cupboard. You might not be able to see them, but before you'd smell them. And if you opened the cupboard, chances are that you'd see little fruit flies flying all over them. They are bad.

    You can try to treat feelings as if they were bananas in the cupboard. You can hide them and you can pretend they don't exist, but they'll still be around. And at last you'll have to deal with them, just like those bananas.

    Daily physical activity is an important part of a healthy lifestyle. For this reason, many architects and designers are working to create buildings that encourage people to make exercise a part of their ordinary routine. The movement to promote healthy activity through architecture is called active design. It began in 1998 as part of a university public health program, and it has since gained popularity in cities around the world. Active design uses a number of techniques to encourage the occupants of a building to be more active.

    One of the most important strategies of active design is inspiring people to make walking part of their routine. A particularly successful tool for promoting walking is the skip-stop elevator. These elevators stop only on every second or third floor, leaving riders to take the stairs in order to reach their destination. Another strategy of active design is to make stairs more pleasant and inviting. Instead of creating dark stairwells that are located in isolated parts of buildings, active design uses well-lit and centrally placed stairs to encourage more foot traffic. Skip-stop elevators and appealing stair design are both effective tools of active design because they offer incentive and opportunity for exercise. In fact, researchers studying a building that employs both skip-stop elevators and more attractive stair design said that 70 percent of building occupants reported using the stairs every day.

    Active design encourages physical activity using not only the interior features of a building, but the relationship between a building and its surroundings as well. A building that employs active design may integrate outdoor space in order to make the environment more engaging and promote physical activity. Some elements that architects use to incorporate the exterior with the interior are glass walls, interior gardens or park spaces, and courtyards with open ceilings, all of which de-emphasize the boundaries between inside and outside. These elements make the building more physically and mentally invigorating. Similarly, by increasing the number of entrances and exits to a building, architects can help keep a building's users interested in their surroundings by providing a variety of routes for them to use. If people continue to be stimulated by new sights or experiences, they are less likely to choose the quickest and easiest path to their destination and may instead choose a more physically challenging route.

    Why does time seem to fly by faster as we get old? You've got your aging brain to blame. This is likely due largely to the physical changes of our nerves and neurons (神经元). New research suggests 'rapid fire' abilities of the young brain allow us to process more information during youth, causing the days to seem longer earlier in life. However, as we get old, researchers say the older brain takes more time to process information.

    The new finding put forward by a Duke University researcher was published in a paper in the journal European Review this week According to Adrian Bejan, the J. A Jones Professor of Mechanical Engineering at Duke, the physical changes of our nerves and neurons play, a major role in our perception (知觉) of time as we get old. Over the years these structures become more complex and eventually begin to degrade.

    "Little babies, for example, move their eyes much more often than adults because they're processing images at a faster rate," Beian says, For older people, this means fewer images are being processed in the same amount of time, causing experiences to seem as though they're happening more quickly.