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CaliforniaCondor's Shocking Recovery

      California condors are North America's largest birds, with wing-length of up to 3 meters. In the 1980s, electrical lines and lead poisoning(铅中毒) nearly drove them to dying out. Now, electric shock training and medical treatment are helping to rescue these big birds.

      In the late 1980s, the last few condors were taken from the wild, and there are now more than 150 flying over California and nearby Arizona, Utah and Baja in Mexico.

Electrical lines have been killing them off. “As they go in to rest for the night, they just don't see the power lines,” says Bruce Rideout of San Diego Zoo. Their wings can bridge the gap between lines, resulting in electrocution(电死) if they touch two lines at once.

So scientists have come up with a shocking idea. Tall poles, placed in large training areas, teach the birds to stay clear of electrical lines by giving them a painful but undeadly electric shock. Before the training was introduced, 66% of set-freed condors died of electrocution. This has now dropped to 18%.

Lead poisonous has proved more difficult to deal with. When condors eat dead bodies of other animals containing lead, they absorb large quantities of lead. This affects their nervous systems and ability to produce baby birds, and can lead to kidney(肾) failures and death. So condors with high levels of lead are sent to Los Angeles Zoo, where they are treated with calcium EDTA, a chemical that removes lead from the blood over several days. This work is starting to pay off. The annual death rate for adult condors has dropped from 38% in 2000 to 5.4% in 2011.

Rideout's team thinks that the California condors' average survival time in the wild is now just under eight years. “Although these measures are not effective forever, they are vital for now,” he says. “They are truly good birds that are worth every effort we put into recovering them.”

    When we say older people shrink,we don't mean they become tiny enough to fit in your pocket!We just mean that it's common for older people to become a little shorter over time.This kind of shrinking can't be stopped, although people can slow this process.But why does shrinking happen at all?

    Because of gravity,cushions between the bones in the spine（脊骨）get compressed（压缩）,which makes a person lose a little height and become shorter.

    Another reason why some older people shrink is because of osteoporosis（骨质疏松）.Osteoporosis occurs when bone is broken down and not enough new bone material is made.Over time,bone is said to be lost.Bones become smaller and weaker and can easily break if someone with osteoporosis is injured.

    Older people—especially women,who generally have smaller and lighter bones to begin with—are more likely to develop osteoporosis.As years go by,a person with osteoporosis can get small breaks in bones that are called compression fractures.These breaks cause collapse of the spine and over time the person with osteoporosis can become hunched over（驼背）.

    Did you know that every day you shrink a little,too?You aren't as tall at the end of the day as you are at the beginning.That's because as the day goes on,water in the disks of the spine gets compressed due to gravity,making you just a tiny bit shorter.Don't worry,though.Once you get a good night's rest,your body recovers,and the next morning,you're standing tall again!

    Smoking and drinking alcohol can make this problem worse.Want to do something right now to build strong bones?I believe what I say will help you.

    I've seen a couple of the other Fast Furious films but this one is definitely best. Dominic Toretto (played by Vin Diesel), Brian O' Conner (Paul Walker) and Mia Toretto (Jordana Brewster) are planning to steal $100 million from businessman Hernan Reyes (Joaquim de Almeida). At the same time, agent (联邦特工) Luke Hobbs (Dwayne Johnson) is chasing after them. The story's pretty fast-moving and the car chase at the end is amazing.

—Derek

    Well, if I'd known it was an action film, I wouldn't have gone to see it. I mean, I can't stand action films. And I'll tell you another thing – I can't stand Vin Diesel. I mean he can't act to save his life. The film would have been much better with someone like Mau Damon or George Clooney. The only good thing about it was the soundtrack (电影配乐) which was pretty good. And I won't be going to see any other Fast & Furious movies either!

—Zoe

    Well it started off all right, but the romance between Mia and Brian was a bit inadequate (不足的) and the whole thing lost its way. It was as if the director couldn't decide whether he was making a thriller, an action movie or a romantic comedy (喜剧), so he ended up making none of them.

—Mario

    It was amazing! I can't believe it was really over two hours long. It just flashed by. The direction was superb； Justin did a really good job. And the acting was great. I know Vin Diesel isn't going to win an Oscar or anything like that but he's good at what he does. And the plot! I laughed out loud quite a few times. The funny thing is, I wouldn^'t have bothered seeing it if my friend hadn't suggested going.

—Megan

    North America tours

    Tour North America and discover how the New World became the culturally diverse civilization it is today: the world's greatest melting pot is in your own backyard.

Boston: Colonial History

    Days: 4

    Get your walking shoes ready to follow the footsteps of the American Founding Fathers in Boston. Journey through the landmarks of the American Revolution in this historical city by walking down the Freedom Trail with a Colonial tour guide. Get out of the city with detours to Salem. Lexington, Concord and Plymouth, where you will see where the first shots of the American Revolution were fired.

Civil Rights in the South

    Days: 5

    Journey back to a time of revolution and brotherhood in the heart of the Civil Rights Movement. Follow the path of the marches through Atlanta, Montgomery and Birmingham, as well as the town of Selma, where a peace l protest erupted into what is now called" Bloody Sunday. "Pay respect to the key contributors to civil rights by visiting the Rosa Parks Museum and the home and church of the most famous civil rights activist of them all. Dr Martin Luther King, Jr.

    IL MUNC in Philadelphia

    Days: 4

    The Ivy League Model UN Conference (ILMUNC) is known as a unique educational experience for its focus on international affairs and networking. Students from across the continent will come together to debate and discuss pressing global issues as UN delegates. You can also explore some of downtown Philadelphia's finest attractions including the Philadelphia Museum of Art, the Liberty Bell. Independence Hall before or after the conference.

    Quebec City &Montreal Four Day Spring Tour

    Days: 4

    Montreal and Quebec City are two of the most diverse, beautiful and exciting travel destinations in Canada. Your tour through Quebec's Upper Town includes the beautifully lit National Assembly, Dufferin Terrace, and Chateau Frontenac. Walk along the 17^th-century cobblestone streets of Lower Town, then continue on to Montreal for a visit to Mont Royal, which boasts breathtaking views from the highest point in the cit.

    Mr.Bean is an internationally recognized comedy character on TV and in films. He constantly gets into awkward and absurd situations, which greatly amuses audiences regardless of their nationalities or culture. The humor is always made clear through a series of simple and funny acts that rely purely on body language, which is universal.

    One of the remarkable shows is that Mr.Bean has a meal in a fancy restaurant. After being seated at his table, Mr.Bean takes out a card, writes a few words on it, seals(密封) it in an envelope and places it on the table. After a moment, he looks back at the envelope but this time he looks surprised, as if he did not know it was there. He opens it to find a birthday card and delightedly puts it on the table for everyone to see.

    When he looks at the menu, an astonished look swiftly appears on his face. He takes all the money out of his wallet, counts it and puts it in a saucer(茶托)．He then looks from the menu to the money with concern until he finds one thing that makes him smile. Then he orders a dish called "steak tartare". When the dish arrives, he is shocked to discover that "steak tartare" is actually raw hamburger. He makes an attempt to eat it, but it is clear from the look on his face that he finds the taste truly disgusting. He cannot hide his feelings, except when the waiter asks if everything is all right. When this happens, he smiles and nods, indicating that everything is fine. When the waiter is not looking, however, he busies himself hiding the raw meat anywhere he can reach-the sugar bowl, the tiny flower vase, inside a bun(小圆面包) and under a plate. He becomes so desperate in the end that he even hides some inside the purse of a woman sitting near him and throws some down the trousers of the restaurant's violinist!

    Apple announced its new iPhones last week, but competitors' mobile phones can do many of the same things for less money.

    The new iPhone 8 and X have wireless charging, edge-to-edge glass screen and double cameras. But all of these features are already available in smart phones from China's Huawei and Oppo, and Korea's Samsung. While Apple asks buyers to pay $1,000 for its high-end model, some Asian phone makers can offer similar features for less.

    At one time, Chinese manufacturers copied features and designs from others to produce low-cost phones. But they have now added high-end features to their phones and they control nearly half the global mobile phone market.

    Media MarktSaturn is Europe's biggest electronics seller. A spokesperson for the store told Reuters that,“Huawei is seen as a relevant competitor to Apple and Samsung by covering all major price points and placing big investments in marketing and sales. '' She also said that the Chinese companies Huawei, ZTE, Lenovo and TCL were among the top-10 best-selling smart phones in its stores.

    Chinese manufacturers' fast growth has been fueled by strong sales in China. But they now export 40 percent of their smart phones. That is almost double the number from just three years ago, according to the Hong Kong investment company CLSA.

    Huawei is currently the world's third largest phone maker behind Samsung and Apple. According to research company Canalys, the Chinese company is getting closer to second-place Apple and might overtake it later this year.The Chinese company even made fun of Apple's new facial recognition feature with a Facebook video called "Real AI phone." Huawei plans to show its top-of-the-line Mate 10 phone on Oct. 16. The phone will have artificial intelligence features such as instant translation and image recognition and will cost less than $1,000.    Other Chinese companies are looking to enter the high-end smart phone market.