1 . When I was a baby, I entertained you and made you laugh．Whenever I was “bad”, you’d shake your finger at me and ask: “How could you?”—— but then you’d give up, and roll me over for a belly scratch and I believed that life could not be any more perfect．

My housetraining was a long process, because you were terribly busy, but we worked on that together. We went for long walks, runs in the park and car rides. We stopped for ice cream. I took long naps in the sun waiting for you to come home at the end of the day.

Gradually, you began spending more time at work and on your career, and more time searching for a human mate. Eventually, you fell in love. She, now your wife, is not a dog person, but I still welcomed her into our home. I was happy because you were happy. Then the human babies came along and I shared your excitement, I was fascinated by their pinkness, how they smelled, and I wanted to mother them too. Your wife was afraid I would bite them. But nevertheless, as they began to grow, I became their friend.

Now, you have a new job in another city and you and they will be moving to an apartment that does not allow pets. You’ve made the right decision for your “family”, but there was a time when I was your only family.

I was excited about the car ride until we arrived at the dog pound. It smelled of dogs and cats, of fear, of hopelessness. You filled out the paperwork and said: “I know you will find a good home for her.” They shrugged and gave you a pained look. The children were in tears as they waved me goodbye. And “How could you?” were the only three words that swept over my mind.

Is it better to live with hope or without hope? At first, whenever anyone passed my pen, I rushed to the front, hoping it was you, that you had changed your mind and that this was all a bad dream.

My beloved master, I will think of you and wait for you forever. I hope you receive more faithfulness from your family than you showed to me.

3 . The United States Department of Agriculture has a program called Wildlife Services. Its job is to help protect agricultural and other resources. Often that means helping farmers deal with unwelcome visitors. This organization has experts from different fields and it has set up thousands of inquiry centers all over the country where farmers can explain their difficulties and get practical help.

One example from Wildlife Services of its work involved a farmer in Washington State in the Pacific Northwest. Several years ago, thousands of Canada geese landed on his fields. The geese began to eat his carrot crop. Biologists from the program suggested that the farmer use noise-making devices and other measures to scare the large birds away. These efforts succeeded, which made the farmer quite happy. Wildlife Services also has a livestock protection program. The program just offers suggestions to keep those unwelcome visitors away instead of killing them. The Wildlife Services program is part of the Animal and Plant Health Inspection Service, or APHIS. APHIS offers some suggestions for ways to keep predators away. For example, try to keep food and water safe from wildlife. Fences may help keep out wolves, especially if the fences are at least two meters high.

Experts suggest providing secure shelter for chickens, sheep and other animals that could be attacked. They also suggest using lights above places where these animals are kept. And they advise people who see wolves to chase them away by shouting, making loud noises or throwing rocks. And to protect livestock, consider using guard animals such as dogs and donkeys, which are very effective.

For home gardeners, a two-meter fence might help keep out deer. To keep out rabbits, a wire fence has to be only about a half-meter high. It should extend fifteen centimeters underground to keep rabbits from digging under it. If snakes are a problem, remove dead trees and cut high grass to destroy their hiding places. Due to its effective work, ever since Wildlife Services was started, it has been well received by farmers all over the States and neighboring countries such as Canada and Mexico.

4 . When she first started learning about the climate change from one of her elders,Fawn Sharp was invited on a helicopter flight over the Olympic Mountains to survey the Mount Anderson glacier.But the glacier was gone,melted by the warming climate.Sharp had a deep sense of loss when she discovered the glacier wasn’t there anymore.

Loss is a growing issue for people working and living on the front lines of climate change.And that gave Jennifer Wren Atkinson,a full-time lecturer at the University of Washington Bothell,US,an idea for a class.

This term,she taught students on the Bothell campus about the emotional burdens of environmental studies.She used the experiences of Native American tribes(部落),scientists and activists,and asked her 24 students to face the reality that there is no easy fix—that “this is such an intractable problem that they’re going to be dealing with it for the rest of their lives”.

Student Cody Dillon used to be a climate science skeptic(怀疑论者).Then he did his own reading and research,and changed his mind.

Dillon wasn’t going into environmental work—he was a computer-science major.Yet,the potential for a worldwide environmental catastrophe seemed so real to him five years ago that he quit his job and became a full-time volunteer for an environmental group that worked on restoration(恢复) projects.

Six months into the work,he decided that Atkinson’s class was just what he was looking for—a place where he could discuss his concerns about a changing climate.

Atkinson said she hoped the class helped her students prepare themselves for the amount of environmental loss that will happen over their lifetimes.

“We are already changing the planet—so many species are going to be lost,displaced or massively impacted,” she said.“The future isn’t going to be what they imagined.”

5 . A month after Hurricane Katrina, I returned home in New Orleans. There lay my house, reduced to waist high ruins, smelly and dirty.

Before the trip, I’d had my car fixed. When the office employee of the garage was writing up the bill, she noticed my Louisiana license plate. “You from New Orleans?” she asked. I said I was. “No charge,” she said, and firmly shook her head when I reached for my wallet. The next day I went for a haircut, and the same thing happened.

As my wife was studying in Florida, we decided to move there and tried to find a rental house that we could afford while also paying off a mortgage (抵押贷款) on our ruined house. We looked at many places, but none was satisfactory. We’d begun to accept that we’d have to live in extremely reduced circumstances for a while, when I got a very curious e-mail from a James Kennedy in California. He’d read some pieces I’d written about our sufferings for Slate, the online magazine, and wanted to give us (“no conditions attached”) a new house across the lake from New Orleans.

It sounded too good to be true, but I replied, thanking him for his exceptional generosity, that we had no plans to go back. Then a poet at the University of Florida offered to let his house to me while he went to England on his one-year paid leave. The rent was rather reasonable. I mentioned the poet’s offer to James Kennedy, and the next day he sent a check covering our entire rent for eight months.

Throughout this painful experience, the kindness of strangers has done much to bring back my faith in humanity. It’s almost worth losing your worldly possessions to be reminded that people are really nice when given half a chance.

6 . Rainbow-coloured rubbish is the colourful waste created by a Swedish city with an unusual recycling(回收利用） system. Like many cities in Sweden , Eskilstuna has an excellent recycling record . It met the EU's 2020 target of recycling 50% of waste many years ago.

Almost everyone who lives here follows strict recycling rules at home. People are expected to sort their household waste into seven separate categories, including food, textiles, cartons and metal. But what really makes the system stand out is the bright colour code.

The reason for this becomes clear at the city's recycling plant. The bags arrive all mixed up because they're collected altogether, once two weeks from outside people's houses. But thanks to those bright colours, scanners can choose the bags and separate them without difficulty. The food waste in green bags is processed on site into mud to make biogas, which powers the city's buses. One of the benefits of this method of recycling is that there is less cross-pollution,so more of the recycled waste can actually be used to make new things.

Like the rest of Sweden, Eskilstuna is devoted to sending zero waste from its citizens to landfill. Waste that cannot be recycled is burnt at a local plant to generate electricity. This reduces dependence on fossil fuels like coal and oil , but does create greenhouse gases .

As countries around the world try to improve their recycling systems, some may look to Eskilstuna as an example to follow-as long as they think they can persuade their citizens to get busy sorting rubbish at home .

8 . In the 12th century, physician Ibn Zuhr conducted some animal research to assess the surgical procedures that could be applied to humans. Since then, animal testing has been considered the most efficient way to develop new drugs. New medical treatments and drugs are tested on animals first to determine their effectiveness or safety levels before they are finally tested on humans. However, it remains controversial whether it is morally right or wrong to use animals for experiments.

The use of animals for medical purposes is seen to be necessary by many scientists. Researchers usually begin their trials using rats. If the tests are successful, further tests are done on monkeys before using human beings. For testing, such tiered(分层的) rounds are important because they reduce the level of error and negative side effects. Some argue that animal testing has contributed to many life-saving cures and treatments and there is no adequate alternative to testing on a living, whole-body system. Moreover, there are regulations for animal testing that limit the misuse of animals during research. They serve as evidence that animals are well taken care of and treated well instead of being intentionally harmed.

However, some other experts and animal welfare groups have opposed such practice, considering it as inhumane(不人道的) and claiming it should be banned. According to Humane Society International, animals used in experiments are commonly subjected to force-feeding, radiation exposure, operations to deliberately cause damage and frightening situations to create depression and anxiety. They also hold the view that animals are very different from human beings and therefore are poor test subjects. Drugs that pass animal tests are not necessarily safe. Animal tests on the arthritis (关节炎) drug Vioxx showed it would have a protective effect on the hearts of mice, yet the drug went on to cause about 27,000 heart attacks before being pulled back from the market.

It’s safe to say that using animals for tests will continue to be debated in many years to come. Despite the benefits of animal testing, some of the concerns need to be addressed with adequate regulations to ensure that animals are treated humanely.