Ecotourism(生态旅游): A Different Way to Travel

    Are you attracted to obscure(偏远的)places? Do you prefer to vacation away from other tourists? Are you careful to take only memories and to leave only footprints? If you answered yes to more than one of these questions, you just might be an ecotourist.

    Ecotourists are people who want to experience the unspoiled natural world and leave it that way when they return home. This trend started in the 1990s and ecotourism is now growing three times faster than the tourism industry at large. The Ecuador's remote Amazon Basin(盆地) is contributing to that expansion, and it gives a snapshot of what ecotourism looks like.

    At the Ecolodge, a small group of cabins(小屋) sits Kapawi Ecolodge in the middle of the Achuar people's reserve(保护区) and is only reached by air. From here, visitors can explore parts of the Amazon rainforest seen by few outsiders. As they do local Achuar guides explain how the forest is like their supermarket, where they find food, clothing, medicine and tools. As a result, tourists learn to appreciate the local culture as well as the natural environment.

    The owners of Kapawi pay monthly rent to the Achuar people, but they also train the community to run and manage the lodge. They have agreed on a plan to turn the operation over to the Achuar completely by 2011.The owners are working to make ecotourism benefit and empower the local people.

    You probably won't start your own ecolodge, but you can be an ecotourist if you follow these guidelines: Protect the environment; Support local businesses; Respect the local customs and traditions.

    The world is full of fascinating places to visit. As an ecotourist, you can enjoy them yourself and make sure that they remain beautiful for future generations as well.

    When asked to point out one or two things that are most important to themselves, many put friends ahead of homes, jobs, clothes and cars.

    A true friendship carries a long history of experience that determines who we are and keeps us connected. It is a treasure we should protect. Unfortunately, the better friends you are, the more probably you'll have disagreements. And the result can be what you don't want — an end to the relationship.

    The good news is that most troubled friendships can be mended. First, don't let your pride get in your way. Most of us can forgive each other when differences are brought out in the open. Second, apologize when you're wrong — even if you've been wronged. Over the course of a friendship, even the best people make mistakes. Sometimes, it may be best if the wronged person takes the lead and apologizes. When you apologize, give your friend a chance to admit(承认) that he has been wrong. Third, see things from your friend's point of view. And finally, accept that friendships change as our needs and lifestyle change. Making friends can sometimes seem easy. The hard part is keeping the connections strong during the natural ups and downs that have an effect on all relationships. My suggestion: consider friendship as an honor and a gift, and worth the effort to treasure and nurture(培养).

    Field Trip Day

    On Friday, May 16, our class will take a field trip to North Park Zoo. The zoo has lions, elephants, and other interesting animals. Many of the animals we have been studying will be there for us to closely examine.

    Our class will be divided into six teams. Each team will have five students and one leader. The leaders are listed in the table.

    What You Need to Know

    The cost is $1.00 for students to enter the zoo. We will leave the school at 9:00 a.m. and return at 2:30 p.m.

    On the morning of the trip, the students will be divided into teams. One student from each team will receive a camera. The cameraman will take pictures of the team, the animals, and other fun sights at the zoo.

    All members should wear blue shirts. Be sure to wear comfortable shoes because we will be walking all day. Please bring a bag lunch and a drink. We will have a picnic at the park inside the zoo. Bring a healthy snack, such as a piece of fruit and a drink, for later in the day.

    When we are at the zoo, always remain with your team. Do not leave the team without asking permission from the team leader.

    Feeding the Animals

    The ONLY animals that students are allowed to feed are those in the children's Zoo. Special food can be bought at the zoo for 25 cents and given to these animals. Do not feed your lunch to them. It is not food for the animals.

    Explorers had been landing in America for some time before English settlers arrived in what is now Jamestown, Virginia, in 1607. But it was in that spot on the James River that English colonization(殖民化) began, and with it, the history of America.

    James I was the king of England at that time, and he had granted approval for a group of businessmen who were part of the Virginia Company to settle in this new land. In all, 214 people set sail for America. They reached it on May 14, 1607. Very soon after they landed, the English found themselves under attack from Algonquins, a native American tribe(部落) who had been living in that area for some time. The English managed to drive off the attackers and stay there.

Under the leadership of Captain John Smith, the English built a fort(城堡)and other buildings designed to protect their new colony. They also found friendly native Americans, like Powhatan, who was willing to trade with them.

    There was a terrible winter in 1609 and only 60 of the 214 settlers survived, which was also hard on Powhatan's tribe and other neighboring native Americans.

    One of the main crops grown by the English settlers was tobacco, which they sold to native Americans and to people back in England, beginning in 1612. Tobacco became a very popular crop because it was easy to grow and because it brought in so much money.

    Once the money started flowing in regularly, the Jamestown colony grew, as did other settlements in Virginia and in other states along the eastern coastline.

    America's first elected assembly (议会), the House of Burgesses, met in Jamestown for the first time on July 30, 1619. The year 1619 also saw another significant development: the first arrival of black workers on boats from Africa. These men and women were originally servants, who worked a small piece of land for a few years and then got to keep the land as owners. Jamestown was also the capital of Virginia and remained so until 1698.

Earth's geologic ages—time periods defined by evidence in rock layers—typically last more than three million years. We're barely 11,500 years into the current age, the Holocene. But a new paper argues that we've already entered a new one—the Anthropocene, or “new man”, age.

    The name isn't brand-new. Nobel Prize winner Paul Crutzen, a co-author of the paper, coined it in 2002 to reflect the changes since the industrial revolution. The paper, however, is part of new push to formalize the Anthropocene age.

    Recent human impacts have been so great that they'll result in an obvious boundary (界限 ) in Earth's rock layer, the author's say. “We are so skilled at using energy and exploiting the environment that we are now a defining force in the geological process on the surface of the Earth,” said co-author Jan Zala, a geologist with the University of Leicester in the UK. Even so, it could take years or even decades for the International Union of Geological Science to formalize the new age.

If the concept of the Anthropocene age is to be formalized, scientists will first have to identify and define a boundary line ,or marker, that's set in stone. “The key thing is thinking about how—thousands of years in the future—geologist might come back and actually recognize in the deposit in the UK.” It's not as straightforward as you might think. The market has to be very precise, and it has to be recognized in many different parts of the world,” said Haywood, who wasn't involved in the new study.

One candidate for the market is the distinctive radioactive signature left by atom bomb tests, which began in 1945. “The fallout (沉降 ) is basically across the world,” Haywood said. In a similar way, scientists used traces of the element iridium (铱) left by shooting star strikes to help define the boundary between the Cretaceous and Tertiary periods—the time of the great dinosaur extinctions.

    The push for a formal declaration of the Anthropocene age is about more than just scientific curiosity. The move the scientists write in the last issue of the journal Environmental Science & Technology, “might be used as encouragement to slow carbon emissions and biodiversity(生物多样性)loss” or “ as evidence on protection measures” Just as Haywood said, by underlining how much we're changing the environment, the formalization would be "a very powerful statement”.

    Chocolate could soon be a thing of the past, after scientists warned that the cacao plant, from which chocolate is made, could be extinct within 32 years.

    Over half of the world's chocolate comes from just two countries in West Africa­Cote d'Ivoire and Ghana­where the temperature, rain, and humidity provide the perfect conditions for cacao to grow. But the threat of rising temperatures over the next three decades caused by climate change, is expected to result in a loss of water from the ground, which scientists say could upset this balance.

    According to the related data, a temperature rise of just 2.1℃ could spell an end for the chocolate industry worldwide by 2050. Farmers in the region are already considering moving cacao production areas thousands of feet uphill into mountainous area­much of which is currently preserved for wildlife. But a move of this scale could destroy ecosystems that are already under threat from illegal farming and deforestation.

    Part of the problem, according to Doug Hawkins, is that cacao farming methods have not changed for hundreds of years. "Unlike other tree crops that have benefited from the development of modern, high yielding strains and crop management techniques to realize their genetic potential, more than 90% of the global cocoa crop is produced by small farms with unimproved planting material," he said. "It means that we could be facing a chocolate decrease of 100,000 tons a year in the next few years."

    Now scientists at the University of California at Berkeley have teamed up with American candy company Mars to keep chocolate on the menu. Using the controversial(有争议的) gene-editing technology known as CRISPR they are trying to develop a type of the cacao plant capable of surviving in dryer, warmer climates. If the team's work on the cacao plant is successful, it could remove the need for farmers in West Africa to relocate to higher ground, and perhaps even allow cacao to be grown elsewhere in the world.