If you can find a tree which has been cut down，you will see many rings，or circles，on the base of the trunk.By learning to read these rings，you can find out about the tree's life.

    The number of rings tells you how old the tree is.Each year，new wood is formed on the outside of the tree.This new wood is light in color when the tree is growing in spring and summer，and dark in winter when the tree is not growing much.So，if you count the rings of dark­or­light colored wood，you can often find out how old the tree is.

    You can also tell which years have been good years and which years have been bad years.When the light­colored rings are very wide，it means that the tree has been growing quickly that year.If the rings are narrow，it has been growing slowly.If the rings on a tree trunk were greatly magnified，you would be able to see why the rings are light­colored when the tree is growing quickly and dark­colored when the tree is growing slowly.The tree trunk is made up of microscopic tubes，like some pipes，carrying water from the soil，through the trunk，and up to the leaves.They are wide and thin­walled when the tree is growing quickly and they are carrying a lot of water.They are narrow and stuck together when the tree is not growing so quickly.

    When a tree is old，the tubes in the centre of the tree don't carry water.The walls of the tubes have become thick with materials which have stuck along them over the years，forming a kind of wood called“heartwood”．This kind of wood is darker in color than the young，growing wood on the outside of the tree.

    You don't very often see whole tree trunks which have been cut across.But once you learn to read a cross section of the wood，you can see much more in wood which has been used to make boxes，houses and other things.

    In most wood，instead of seeing the trunk cut across，you are seeing it cut along its length.Because you don't see the whole tree，you can't tell how old it is.

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    If anyone knows what makes a great children's book,it must be Sussex author and illustrator(插图家) Jane Hissey. Her " Old Bear" books have achieved classic status in a variety of formats.

    I caught up with Jane at her home in the East Sussex countryside and asked her what she thinks is the secret of a classic children's book. "That's a difficult one. I suppose it's got to be relevant to the child's stage of development-for young children, pictures on a page that are familiar, for older children, an experience. The book should be familiar,but hold some surprises too to keep the interest. It must inspire and delight, but there are the things that happen every day. "

    After the birth of her first child,she gave up teaching and worked on her own artwork, drawing pictures of teddy bears. An editor from a publishing company saw her work and invited Jane to do a children's book. Over the years, from the first " Old Bear" book in 1988,her children have made a huge contribution-not least in terms of plot. She said, "I used to give my children the toys to play with-and they had tea parties and so on. One of my bear characters,"Little Bear",is the same age as Ralph, my youngest, who's seven now. All the children have joined in my work and,in years to come, they will realize how much. "

    "I hope I'll know when people are getting tired of the characters. If ever they did, I think I'd go on drawing them for fun," Jane continued," My own children have been very useful to me in my work, but as they are older now, I'll just have to hope that other people's children can inspire me. "

    Last Thursday, Michael and Linda stood behind large food trucks distributing meals to 4,000 homeless people for their wedding reception on the border town of Kilis. The couple had decided that instead of hosting their friends and family for a traditional feast reception, they would feed the victims from an earthquake-stricken area.

    The idea came from the bridegroom's father, Ted, who volunteers for a Turkish relief organization. For the past few years, the organization has distributed daily meals to thousands of people who've suffered from natural disasters. He approached a representative of the organization and suggested that the family cover part of the costs of feeding them for the day.

    Then he told his son, who was surprised by the suggestion, but soon won over. When he told that to the bride, she was really shocked but finally accepted because in southeastern Turkey there is a real culture of sharing with people in need. They love to share their food, their table and everything they have. And afterwards she was quite amazed about it. So, they arrived at the distribution center on Thursday to spend the day serving food and taking photographs with their grateful recipients（接受者）．

    On Tuesday evening, the newly married couple were still pleased with their decision to quit a personal celebration for one with a greater good. "It's like sharing a dinner with your friends and family who have this kind of thing on a daily basis or sharing something with people who don't even have the most basic things," Michael said. "Hopefully, this will also give the start for other wedding dinners to be held here with our brothers and sisters in need."

    For centuries, in the countries of South and Southeast Asia, the elephant has been an important part of the culture, economy and religion. And nowhere more so than in Thailand. Unlike its African cousin, the Asian elephant is easily domesticated. The rare so­called white elephants have actually lent the power of royalty to its rulers, and until the 1920s the national flag was a white elephant on a red background. To the early Western visitors, the country's romantic name was "Land of the White Elephant"．

    Today, however, the story is very different. Out of work and out of land, the Thai elephant struggles for survival in a nation that no longer needs it. The elephant has found itself more or less deserted by previous owners who have moved on to a different economic world and a society in the western part. And while the elephant's problems began many years ago, now it has a very low national advantage.

    How does the national symbol turn into ignored animals? It is a story of worse environment and the changing lives of the Thais themselves. According to Richard Lair, Thailand's expert on the Asian elephant and author of the report Gone Astray, at the turn of the last century, there may well have been as many as 100,000 national elephants in the country.

    In the north of Thailand alone, it was estimated that more than 20,000 elephants were employed in transport, 1,000 of them alone on the road between the cities of Chiang Mai and Chiang Saen. This was at a time when 90 percent of Thailand was still forest—a habitat that not only supported the animals but also made them necessary to carry goods and people. Nothing ploughs through thick forest better than lots of sure­footed elephants.

    By 1950 the elephant population had dropped, but still to the number of 13,397. However, today there are probably no more than 3,800, with another 1,350 wandering free in the national parks. But now, Thailand's forest covers only 20 percent of the land. This deforestation (采伐森林) is the central point of the elephant's difficult situation, for it has effectively put the animals out of work. This century, as the road network grew, the elephant's role as a beast of burden decreased.

At a large forest park in eastern Beijing, 11 birds on the state-level protection list were recently released.

These birds had recovered after the Beijing Wildlife Rescue and Rehabilitation Center rescued and took care of them. "We will speed up our efforts to push the establishment of district-level wildlife rescue centers to jointly guard the health of wildlife," said Du Lianhai, director of the center.

The center was set up in 2001 and built a wildlife rescue base in the capital's Shunyi District in 2005. Staff at the base have rescued and rehabilitated over 30,000 wild animals in total.

Wildlife protection has been strengthened in Beijing in recent years. On June 1, the city's newly adopted regulation on wildlife protection took effect, introducing stricter and more concrete measures to protect the environment and wildlife.

For example, the regulation states clearly that Beijing bans hunting throughout the year, compared with the previous regulation which bans hunting during the periods of March to May and September to November each year. The new regulation also gives severer punishment for poachers.

After years of monitoring, data with the Beijing Gardening and Greening Bureau recently showed ecological reconstruction progress. The species and quantity of wild animals in Beijing are continuously increasing, with the number of terrestrial spinal wild animals (陆地脊椎野生动物) growing from 461 species in 1994 to more than 500. The habitat of the endangered bird has expanded from Fangshan District to the whole city, according to the bureau.

"The enforcement of the new regulation marked a new phase in Beijing's wildlife protection work," said Dai Mingchao, deputy director of the Beijing Gardening and Greening Bureau.

"We will step up the publicity of the regulation and raise citizens' awareness of wildlife protection," Dai said. "In our integrated protection of mountains, rivers, forests, farmlands, lakes and grasslands, we take into full consideration the requirements of food-chain construction, ecological corridor construction, and wildlife and their habitat protection."