A kind of little cars may take the place of today's big ones many years later. If everyone drives such cars in the future, there will be less pollution in the air. There will also be more space for parking in cities, and the streets will be less crowded.
      The little cars of the future will cost less. Driving will be safer, too, since these little cars can go only 65 kilometers an hour. The cars of the future will be fine for going around a city, but they will not be useful for a long way. Little cars will go 450 kilometers before they need to stop for more gasoline (汽油). If big cars are still used with the small ones, two kinds of roads will be needed in the future. Some roads will be needed for the big, faster cars and other roads will be needed for the small, slower ones.

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

    Suzanne Simard, forest ecologist(生态学家) at the University of British Columbia, explains how trees are much more complex(复杂的) than most of us ever imagined. Although Charles Darwin(达尔文) thought that trees are competing for survival of the fittest, Simard and her team have made a new discovery and showed just how wrong he was. In fact, the opposite is true: trees survive through their group work and support, passing around necessary nutrition(营养) such as nitrogen(氮) and carbon "depending on who needs it".

    Nitrogen(氮) and carbon are shared through miles of underground fungi (真菌) networks. This makes sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This 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 influences all.

    Simard talks about "Mother trees". These are usually the largest, oldest plants that on which all other trees depend. These "Mother trees" are connected to all the other trees in the forest by this network of fungi, and may manage the resources of the whole trees and plants in the forest. She explains how these trees pass on the wealth to the next generation, transporting important resources to young trees so they may continue to grow. When humans cut down "Mother trees" without paying attention to these highly complex "tree societies" of the networks on which they feed, we are reducing the chances to save the whole forest.

    "We didn't take any notice of it," Simard says sadly. "Mother 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.

    Treasure hunting(寻宝游戏) is not just a story from m{#blank#}1{#/blank#} or books, but can also be part of your next holiday.

Five years ago, US art collector and writer Forrest Fenn h{#blank#}2{#/blank#} a treasure box somewhere in New Mexico, the US. The box was f{#blank#}3{#/blank#} of gold coins, diamonds and other treasure. It's worth about ＄1. 8 m{#blank#}4{#/blank#} (12, 400,000 yuan), and it will go to whoever finds the box. The 84-year-old millionaire(百万富翁)7 l{#blank#}5{#/blank#} some clues(线索) in his book The Thrill of the Chase.

    Fenn said the i{#blank#}6{#/blank#} came to him after he got cancer(癌症) in 1988." I wanted the monetary value(金钱的价值) to be a consideration for those who are l{#blank#}7{#/blank#} for it, but mostly my motive(动机)was to get kids off the sofa and a{#blank#}8{#/blank#} from their texting machines and out in the m{#blank#}9{#/blank#} ."he told KOAT News in the US. Fenn said about 30,000 people came to find the box last year. He g{#blank#}10{#/blank#} that this year more than 50,000 people would come.

What do people do with their old, out of date but still useful computers? Most people don't know how to deal with them. Many old computers are put away. Many more are simply thrown away as rubbish.

Finally, some companies are thinking of ways to bring down the number of old computers. Sony has agreed to help recycle old Sony products(产品). Dell, Hewlett Packard and other companies now also take back some old computers of their own brands.

In some countries, laws have been passed, too. Computer companies have to pay for collecting and recycling their used products. And 70% of computer waste must be recycled. The idea behind the laws is that computer companies themselves should pay for the cost. That will encourage them to make computers which are easier and cheaper to repair and upgrade(升级).

Yet many people are throwing away good computers, while others cannot afford them at all. Hundreds of organizations are working on this problem. They collect and repair old computers. Some also teach others how to repair computers. These repaired computers then go to schools, charities(慈善团体) or people who need them. Giving a used computer to one of these organizations can turn one person's rubbish into someone else's useful things and cut down waste, too.

A beach trip can be fun and relaxing. To have an enjoyable beach trip, you need to make plans for it. Here is some useful information .

Decide which beach to visit. Have a discussion (讨论) with your family. Before you look for information online, sit down and talk with your family to learn about their ideas. Write down their ideas so that you won't forget them. For example, maybe your daughter wants to look for sea shells and your son wants to try some water sports.

____ One of the most important things to bring on a family beach trip is a cooler (冰桶) full of ice and things to eat and drink! Because you will spend a few hours on the beach, your family will need some food and drinks. It's better to bring lunch for everyone. Some good beach food and drinks are fresh fruit, sandwiches, juice and so on.

Plan activities for your trip. The best part of a beach trip is that your family can play together! Make sure that you bring things that your family want to use when they are on the beach, such as sand toys, frisbee (飞盘) and cards. If you want to stay by yourself, you can also bring some books to enjoy yourself.

With good preparations, you are sure to have a good time on the beach!

What is the perfect(完美的)life like? And what should we do to reach that?

We all hope to be healthy, to have much energy(能量)and to live healthily and happily. Today, with the quick development of medical science, the quality of our health can be better and the life will be much healthier and more beautiful! It's reported that people with excellent health habits are far healthier, have more energy, and live longer and better than people who have poor health habits. 

It's really important for us to enjoy excellent relationships with the people we like and respect(尊敬), and they like, love and respect us in turn. Fully 85% of your happiness will be decided by the quality of your relationships at each time, and in each place, of your life. How well you get along with people and how much they like, love and respect you, have more effect on quality of your life than perhaps any other reason. 

It's essential to do work that we enjoy, to do it well, and to be paid for it. You want to be able to get and keep the job you want, to be paid more. You want to make the very most that is possible for you at each area(领域), whatever you do. 

It's a great feeling to achieve financial independence(经济独立). You want to reach the point in life where you have enough money so you never have any financial worries. You want to be really free of them.