Would it surprise you to learn that, like animals, trees communicate with each other and pass on their wealth to the next generation?

    UBC Professor Simard explains how trees are much more complex than most of us ever imagined.

    Although Charles Darwin thought that trees are competing for survival of the fittest, Simard shows just how wrong he was. In fact, the opposite is true: trees survive through their co-operation and support, passing around necessary nutrition “depending on who needs it”.

    Nitrogen (氮) and carbon are shared through miles of underground fungi (真菌) networks, making sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This hidden system works in a very similar way to the networks of neurons (神经元) in our brains, and when one tree is destroyed, it affects all.

    Simard talks about “mother trees”, usually the largest and oldest plants on which all other trees depend. She explains how dying trees pass on the wealth to the next generation, transporting important minerals to young trees so they may continue to grow. When humans cut down “mother trees” with no awareness of these highly complex “tree societies” or the networks on which they feed, we are reducing the chances of survival for the entire forest.

     “We didn't take any notice of it,” Simard says sadly. “Dying trees move nutrition into the young trees before dying, but we never give them chance.” If we could put across the message to the forestry industry, we could make a huge difference towards our environmental protection efforts for the future.

    Chinese students always complain that they're under great pressure and don't get enough sleep. But they may be surprised to learn that they're much luckier than their peers (同龄人) in South Korea and Japan, according to a recently published report, conducted by Shanghai Academy of Social Sciences on the physical and mental health of senior high school students in the three Asian countries.

    According to the study among nearly 6,000 high school students in the three countries, Chinese students are the tallest but poorest in physical fitness. Chinese students are on average 168.17cm, compared with 167.61cm for South Korean students and 164.70cm for Japanese students. Chinese students asked for sick leave more than students in other countries. About 72 percent of Korean students never asked for sick and injury leave during high school, compared to 53 percent for Japanese students and 45 percent for Chinese students. Moreover, Chinese students drink alcohol and smoke earlier than Korean and Japanese students. Around 70 percent of Chinese students have drunk alcohol, compared to 50 percent for Korean and Japanese students.

    According to the survey, Japanese and South Korean students suffer more pressure than their Chinese peers. Statistics (统计) show 16 percent of students in China said they experienced mental pressure often over the past year, while the numbers in Japan and South Korea were 33 percent and 47 percent respectively. Their worries come from “study”, “future after graduation”, “friendships” and “relationship with their parents”. To go with stress, 57.9 percent of Korean students sleep the least, less than six hours a day, compared with 46.6 percent of Japanese students and 30 percent of Chinese students.

    More Chinese students were satisfied with their physical appearance, double that of students in the survey from Japan and South Korea. The report said that over half of students in South Korea had tried to lose weight in the past year, while in China the figure was only 22 percent.

    In measures of self-worth, such as “I think I am valuable” and “I think I am successful”, “I can complete many things”, “I won't give up to failure,” Chinese students showed greater self-confidence than students in Japan and South Korea.

    The human brain remembers negative experiences more easily than positive ones. Our brains have developed in this way because threats,like dangerous animals ,have a more immediate effect on people's survival compared to positive things like food or shelter.As a result,you clearly know what makes you unhappy,but do you know what makes you happy?

    Research suggests that our level of happiness is partly shaped by the choices we make.If you've been chasing wealth,fame,power and some material things,you may be looking for happiness in the wrong places.Psychologists suggest that the following habits can make people happier.

    People who own close relationships tend to be happier than those who do not.The number of our friends is not important.What matters is the quality of our relationships.Relationships that bring happiness usually consist of the sharing of feelings,acceptance,mutual respect and trust.

    People who exercise on a regular basis can improve both their physical and mental well-being.Some research has shown that exercise can be as effective as some medicine in treating depression.

    If we are so interested in an activity,we may lose track of time,and we can be in a state of flow.The activity could be playing the piano,surfing the Internet or playing a game...People who experience flow in their work or life tend to be happier.

    People are more likely to be happy if they know what their strengths are and can use them regularly.People are especially happy when they can set goals and use their strengths to achieve them.

    People,who think positively by being grateful,mindful and optimistic,are more likely to be happy.Being grateful means being thankful.Being mindful means considering,focusing on,and enjoying the experiences of the present moment.Being optimistic means being hopeful about the future.

    The value-packed, all-inclusive sight-seeing package that combines the best of Sydney's harbor, city, bay and beach highlights.

    A Sydney Pass gives you unlimited and flexible travel on the Explorer Buses: the 'red' Sydney Explorer shows you around our exciting city sights while the 'blue' Bondi Explorer visits Sydney Harbour bays and famous beaches. Take to the water on one of three magnificent daily harbor cruises (游船). You can also travel free on regular Sydney Buses, Sydney Ferries or CityRail services (limited area), so you can go to every corner of this beautiful city.

    Imagine browsing at Darling Harbour, tasting the famous seafood at Watsons Bay or enjoying the city lights on an evening ferry cruise. The possibilities and plans are endless with a Sydney Pass. Wherever you decide to go, remember that bookings are not required on any of our services so tickets are treated on a first in, first seated basis.

    Sydney Passes are available for 3, 5 or 7 days for use over a 7-calendar-day period. With a 3 or 5-day pass you choose on which days out of the 7 you want to use it. All Sydney Passes include a free Airport Express inward trip before starting your 3, 5 or 7 days, and the return trip is valid for 2 months from the first day your ticket was used.

    Sydney Pass Fares

    A child is defined as anyone from the ages of 4 years to under 16 years. Children under 4 years travel free.

    A family is defined as 2 adults and any number of children from 4 to under 16 years of age from the same family.

    Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or, in summer, they may think it is the heat. However, the real reason lies inside their bodies. At that time—about eight hours after you wake up—your body temperature goes down. This is what makes you slow down and feel sleepy. Scientists have tested sleep habits in experiments where there was no night or day. The people in these experiments almost always followed a similar sleeping pattern. They slept for one long period and then for one short period about eight hours later.

    In many parts of the world, people take naps (小睡) in the middle of the day. This is especially true in warmer climates, where the heat makes work difficult in the early afternoon. Researchers are now saying that naps are good for everyone in any climate. A daily nap gives one a more rested body and mind and therefore is good for health in general. In countries where naps are traditional, people often suffer less from problems such as heart disease. Many working people, unfortunately, have no time to take naps. Though doctors may advise taking naps, employers don't follow it! If you do have the chance, however, here are a few tips about making the most of your nap. Remember that the best time to take a nap is about eight hours after you get up. A short sleep too late in the day may only make you feel more tired and sleepy afterward. This can also happen if you sleep for too long. If you do not have enough time, try a short nap—even ten minutes of sleep can be helpful.

    As the international demand for narrative films （纪录片）continues to increase with popular streaming services like Netflix and others, the two questions then come： Will the coming generations receive most of their entertainment through visual means rather than through the written word? Will such an increase of narrative film reduce the importance of reading?

    Growing examples of this trend include the dimishment(减少)of fiction lovers, the ever­rising culture of computer games, the wave of streaming services of wide international reach, and movies filled with special effects made for children and teenagers. Nor must we ignore the economic dangers that lie ahead for the written word. The narrative film industry is a moneymaker that surpasses the publishing industry.

    The other underlying question, of course, is "does it really matter if the written word bows to the world of narrative films?" From my point of view, any diminishment of fiction delivered by words is a loss for mankind.

    There is no greater human feature than the imagination. It lies at the very soul of the human species. It is the brain's most powerful engine. It is the essential muscle of life and like all muscles it must be exercised and strengthened.

    Writing and reading are the principal tools that inspire and create our imagination. Anything that diminishes that power is the enemy of mankind.

    It should be known that I am not opposed to new media and technological advances. Instead, I have always felt it necessary to adapt to advancing technology. In fact, a number of my novels are in various stages of development for film, TV and live stage productions. My hope is that the written word will only stand to be complemented(补充) by technology, not pushed to the edge of extinction.

    Of course, there are those who will present arguments for the superiority of the moving image over the written word. Each has its place. My argument is for finding the right balance between it and the moving image.