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 cooperation 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.

    It was warm for a Sunday afternoon in early January. Kevin loved being outdoors among the wild rosebushes in front of his house with a view of distant mountains.

    It had been a good day for his wife, Sharon, too. They spent the morning in front of the house, talking and drinking tea. Sharon felt strong and tried her best to cook, starting a pot of homemade soup — a task that would have been nothing a few years ago, but is a little hard for her now. Her illness had left her weak, often puzzled.

    Sharon was the take-charge person in the family. She was seldom sick until 1997, when she began suffering from terrible headaches. One day at work, colleagues said she didn't look right and urged(敦促) her to go to the hospital. She rose from her chair and fell over. She could hear voices, but couldn't speak. It looked as if she'd had a stroke(中风).

    Other stroke-like symptoms (症状) followed. She had difficulty walking. She ran a fever all the time. The headaches never stopped. She and Kevin spent all their savings seeing doctors and on medical tests.

    In 2000, physicians said Sharon had brain damage that left her with symptoms resembling dementia (痴呆症). Once, she visited a familiar store and couldn't remember where the exit was. Another time, she was making spaghetti, but didn't know what to do after the water boiled.

    After seeing specialists, Kevin and Sharon came to believe that exposure(接触) to mould(霉菌) had caused Sharon's condition. Her world was certainly getting worse. At times she needed a wheelchair. The woman who never liked asking for help had to stay at home and rely on her husband.

    Does your local high school have a student newspaper? Only 1 in 8 of New York's public high schools has student newspapers – and many of those are published just a few times a year. A few more are online, which can leave out poorer schools.

    Rebecca Dwarka, an 18-year-old senior who works for her student paper said, “Facebook is the new way of finding out what happened. Nobody wants to actually sit down and read a whole article about it. This makes a 'whole article' sound a little like a long sentence in lonely places.”

    I am not nostalgic(怀旧的) about high school student newspapers and never worked for mine. I put out what was then called a personal magazine with a group of friends because we wanted to write about peace, war and rock 'n' roll without school officials warning us not to make jokes about the local officials.

    School newspapers are in decline(衰落) because students now find out what happened on social networking websites. This is a little discouraging because it proves that for millions of Americans, journalism is becoming a do-it-yourself thing. Every citizen can be a reporter.

    When something happens, we look for social media messages. Facebook posts and Tweets have become the means by which citizens and reporters can prove, deny, pass on stories and express opinions without the press' challenging, researching or slowing the message.

    But truly good journalism is a craft, not just a blog post. It requires seeing something carefully and it uses an eye for details to help prove a larger view. And even journalism that conveys an opinion tries to be fair. If school newspapers begin to disappear, I hope there are other ways for students to learn that.

    British children used to play conkers (板栗游戏) in the autumn when the horse-chestnut trees started to drop their shiny brown nuts. They would select a suitable chestnut, drill a hole in it and thread it onto a string, then swing their conker at that of an opponent until one of them broke. But the game has fallen out of favour. Children spend less time outdoors and rarely have access to chestnut trees. Besides, many schools have banned conkers games, worried that they might cause injuries or nut allergies.

    That sort of risk-averseness(规避风险) now spreads through every aspect of childhood. Playgrounds have all the excitement designed out of them to make them safe. Many governments, particularly in societies such as America, have tightened up their rules, requiring parents to supervise(监管) young children far more closely than in the past. Frank Furedi of the University of Kent, a critic on modern parenting, argues that allowing children to play unsupervised or leaving them at home alone is increasingly described as a symptom of irresponsible parenting.

    In part, such increased caution is a response to the huge wave of changes. Large-scale urbanization, smaller and more mobile families, the move of women into the labor market and the digitization of many aspects of life have unavoidably changed the way that people bring up their children. There is little chance that any of these trends will be changed, so today's more intensive(精细化 ) parenting style is likely to go on.

    Such parenting practices now embraced by wealthy parents in many parts of the rich world, particularly in America, go far beyond an adjustment to changes in external conditions. They mean a strong bid to ensure that the advantages enjoyed by the parents' generation are passed on to their children. Since success in life now turns mainly on education, such parents will do their best to provide their children with the schooling, the character training and the social skills that will secure access to the best universities and later the most attractive jobs.

    To some extent that has always been the case. But there are more such parents now, and they are competing with each other for what economists call positional goods. This competition starts even before the children are born. The wealthy classes will take their time to select a suitable spouse and get married, and will start a family only when they feel ready for it.

    Children from less advantaged backgrounds, by contrast, often appear before their parents are ready for them. In America 60% of births to single women under 30 are unplanned, and over 40% of children are born outside marriage. The result, certainly in America, has been to widen already massive social inequalities yet further.

    All the evidence suggests that children from poorer backgrounds are at a disadvantage almost as soon as they are born. By the age of five or six they are far less "school-ready" than their better-off peers, so any attempts to help them catch up have to start long before they get to school. America has had some success with various schemes involving regular home visits by nurses or social workers to low-income families with new babies. It also has long experience with programmes for young children from poor families that combine support for parents with good-quality child care. Such programmes do seem to make a difference. Without extra effort, children from low-income families in most countries are much less likely than their better-off peers to attend preschool education, even though they are more likely to benefit from it. And data from the OECD's PISA programme suggest that children need at least two years of preschool education to perform at their best when they are 15.

    So the most promising way to ensure greater equality may be to make early-years education and care for more widely available and more affordable, as it is in the Nordics. Some governments are already rethinking their educational priorities, shifting some of their spending to the early years.

    Most rich countries decided more than a century ago that free, compulsory education for all children was a worthwhile investment for society. There is now an argument for starting preschool education earlier, as some countries have already done. In the face of crushing new inequalities, a modern version of that approach is worth trying.

    Cassandra Feeley finds it hard to manage on her husband's income. So this year she did something more than a hobby. She planted vegetables in her yard. For her first garden, Ms. Feeley has put in 15 tomato plants, and five rows of a variety of vegetables. The family's old farm house has become a chicken house, its residents arriving next month. Last year, Ms. Rita Gartin kept a small garden. This year she has made it much larger because, she said, "The cost of everything is going up and I was looking to lose a few pounds too; so it's a win-win situation all around."

    They are among the growing number of Americans who, driven by higher living costs and a falling economy, have taken up vegetable gardening for the first time. Others have increased the size of their existing gardens. Seed companies and garden shops say that not since the 1970s has there been such an increase in interest in growing food at home. Now many gardens across the country have been sold out for several months. In Austin, Tex, some of the gardens have a three-year waiting list.

    George C Ball Jr. owner of a company, said sales of vegetable seeds and plants are up by 40%, over last year, double the average growth of last five years. Mr. Ball argues that some of the reasons have been building for the last few years. The big one is striking rise in the cost on food like bread and milk, together with the increases in the price of fruit and vegetables. Food prices have increase of higher oil price. People are driving less, taking fewer vacations, so there is more time to garden.

A planet the size of Jupiter has been discovered and it is one of the hottest ones known to us. This has made scientists think about how planets are formed.

Planets such as Earth have more oxygen than carbon, but what if the composition（组成）is just the opposite? This is a question opened up by a recent discovery of a diamond planet by US and UK scientists. The planet is 1200 light years away from Earth and was observed using NASA's Spitzer Space Telescope. Dr Marek Kukula explained that researchers initially used the Super WASP(Wide Angle Search for Planets) robotic observatories operating continuously, all year around. They detected the planet, then it was observed with the Spitzer Space Telescope, which detected the heat coming from the planet, and from that heat signature they can tell what this planet is made from.

The planet is very different to Earth. "It's giant planet," explains Dr Kukula, "a gas planet, a bit like Jupiter in our solar system. But the interesting thing that they've discovered is that it has a very different composition to the planets in our solar system. This planet has more carbon than oxygen." This suggests that there is more than one way to make a solar system and the range of planets in the universe could be much wider than previously thought.

Dr Kukula says that if there are smaller planets in the same solar system with a similar composition, rich in carbon, their rocks could be rich in minerals such as carbon and diamonds, unlike Earth which has silica (硅石), the sand that rocks on Earth are made from. "This is where this diamond planet idea comes from; they haven't actually detected a diamond planet yet," explains Dr Kukula.it' s hypothetical (假设的), "but you can imagine strange landscapes with black graphite rocks lying around and the surface could be covered with sticky liquids instead of water".