When thinking about placing a human being in space, one of the most important questions was how to design special clothing needed to protect a person from the dangers of the space environment. The cold of space will freeze skin in a short time. The fierce heat of the sun can cause serious burns. The lack of atmosphere can cause gases in the body to expand(扩大) and even burst. With no oxygen to breathe, a human being will die in only a few moments. Radiation from the sun is another risk in space. So is damage from small pieces of rock and objects like meteoroids (陨石).

    In 1933, an American flyer, Wiley Post, designed one of the first successful devices to protect a pilot at extreme heights. It was a large device that looked like a can surrounded the pilot's head. Astronauts in the American space agency (NASA) flew the first American space flights in the early 1960s. The clothing was similar to that invented by Wiley Post.

    Today, astronauts wear very different protective clothing. It lets them move, do useful tasks, and stay outside their spacecraft in comfort and safety for several hours. The spacesuit is called the shuttle extravehicular mobility unit or EMU. It was designed to endure longer and to permit more movement than earlier spacesuits.

    The EMU has a number of parts that an astronaut can link together by using only one hand, which makes it possible for each astronaut to select the parts that fit correctly.

    Nowadays, NASA scientists are also considering the kind of spacesuits that would be needed for exploration on the planet Mars. Because of the gravity on Mars, spacesuits may have to be designed to be lighter than suits used in orbit or on the moon. The equipment may also have to protect astronauts from dust carried in the winds on Mars. And, they must be easy to repair and keep clean during a longer flight to and from the red planet.

    Kenyon Scudder once told me a story about his friend, Michael. Michael happened to be on a train sitting next to a young man who seemed worried. Finally the young man told the friend that he was a convict (罪犯) returning home from a prison for away. What he did had brought shame on his family, and they had neither visited him nor written to him. He hoped, however, that this was only because they were too poor to travel and too busy to write.

    When he was set free he had written to tell them he wanted to go home. To make matters easy for them, however, he had asked them to put up a signal (信号) for him when the train passed their little form. If the family had forgiven (原谅) him, they were to put up a white ribbon (丝带) in the big apple tree near the railway. If they didn't want him back, they were to do nothing, and he would stay on the train, and go far away.

    As the train neared his hometown, his suspense became so great that he was afraid to look out of the window. He asked Michael to watch for the big apple tree. They changed seats. In a minute, Michael put his hand on the young convict's shoulder. “There it is,” he said, his eyes filled with sudden tears. “It's all right. The whole tree is white with ribbons.”

    Traveling abroad is a great way for young adults to explore,learn about global citizenship,service learning and gain a better insight into the world and different cultures.Ready for the adventure of a lifetime?Visit our website for further details.

Global Vision International

    Experience everything a Latin American adventure should be,and more,when you join us in Costa Rica with a team of international under 18 volunteers.Assist with construction projects that will benefit poor children's development and education.Discover the area's amazing beaches,explore beautiful tropical jungles and immerse（沉浸）yourself in the friendly local culture.

    Cost: 2 weeks from $2,990

    Tel: 1-888-653-6028

    Email: info@gviworld.com

    Website: www.volunteerandadventureexperienceincostarica.com
Broadreach Summer Adventures

    Since 1993,Broadreach has taken over 12,000 students on their worldwide summer adventure volunteer programs for middle school and high school students.Their 75+ program offerings include sailing,medicine,culture, arts,community service and leadership adventures.Programs are located in 40+ countries including the Caribbean, Central and south America,Canada,Australia,China,India,South Africa,France,Thailand,the Solomon Islands and Fiji.

    Cost: Starting at $3,880

    Tel: 919-256-8200

    Email: info@gobroadreach.com

    Website: www.gobroadreach.com

    Cross-Cultural Solutions

    CCS teen summer service trips are for high school students ages 15-17.The High School Volunteer Abroad program offers you an awesome opportunity to volunteer side by side with local people and new friends on a teens—only group volunteering project in our Costa Rica,India,Peru,Ghana, and Guatemala High School Volunteer Abroad Home—Bases.You'll participate in tons of cultural activities and guided tours during the week and on weekends.

    Cost: Contact us for pricing and availability

    Tel: US toll flee: 1-800-380-4777

    Email: info@crossculturalsolutions.org

    Website: www.crossculturalsolutions.org

United Planet

    United Planet offers tailored volunteer abroad programs in five destinations for those under 18.Volunteers may work in orphanages,after-school centers,building homes or at environmental conservation projects.Destinations for 1-12 week Teen Quests include Romania,Peru,Ecuador and Chile.Candidates 16 years and older can apply,or travel with their family.

    Cost: Varies with duration of your stay

    Tel: 617-267-7763

    Email: quest@unitedptanet.org

    Website: www.unitedplanet.org

    Here are some recommendations for tourists to choose from.

    Banff, Canada

    Banff, located in the Rockies, has a view of tall mountains, deep valleys and lakes, making it the first town to become part of the country's national parks. Tourists can enjoy its beauty by hiking, horse riding and boat trips. Banff was founded in 1883 while a railroad was in construction. It was the water springs that drew the engineers' attention to the place as a settlement. With such a fantastic view, it's no surprise that Banff hosts a number of cultural festivals.

    Lisbon, Portugal

    Lisbon is the capital of Portugal, with the warmest winters of any major European city.

    Belem Tower and Jeronimos Monastery are listed as UNESCO World Heritage Sites. The former was built in the 16^th century as a symbol of Portugal's Extraordinary Age and the latter is one of the greatest examples of the Portuguese late-Gothic style of architecture. The Lisbon Oceanaium is among Europe's finest aquariums. The Museu Calouste Gulbenkian is among the best museums in Europe containing priceless artworks covering 4000 years from ancient Egyptian times to the late 20^th century.

    Portland, US

    Portland is frequently recognized as one of the world's most environmentally-friendly cities because of its well-built pavements, large community of cyclists and convenient public transportation. Its climate is ideal for growing roses and it's called the “City of Roses”. Besides, the seaport is also known as a city of beer: it has the largest number of beer breweries（啤酒厂）of any city in the world. Today's Portland is better known for its music. It's called “the capital of karaoke” and “one of the most exciting music scenes” in the US.

    Bordeaux, France

    Bordeaux attracts tourists with its rich cultural heritage, especially its wealth of architectural treasures. Besides the Cathedral of Saint Andrew dating back to 12^th century, the Basilica of Saint Michael is another one of the city's UNESCO World Heritage Sites. It took 200 years to build from 14^th to 16^th centuries. Other significant buildings include the Grand Theater built in 1780 in the new Classical style and the Stone Bridge built in 1821.

    Measles (麻疹) is only found in human beings. There is a highly effective and safe vaccine (疫苗) for the disease. So, in theory, measles could be destroyed.

    Yet the number of measles cases is on the rise.

    The World Health Organization (WHO) reports that, in the first three months of 2019, the number of cases is three times higher than it was last year. Africa alone has had a 700 percent increase compared to last year.

    The Democratic Republic of Congo reported 67,000 measles cases and 901 measles-related deaths in 2018. This year, WHO officials have noted more than 40, 000 suspected measles cases in the country. That number includes 284 measles-related deaths in the first weeks of 2019. Between September 2018 and February 2019, Madagascar reported over 67, 000 measles cases, including 828 deaths.

    Dr. Fauci, who directs the National Institute of Allergy and Infectious Disease in the USA, said that one in 10 children who get infected with measles will get an ear infection that could cause deafness. One in 20 would get pneumonia. One in a thousand would get brain swelling, and one to three per thousand would die. To say that measles is a slight disease is completely incorrect.

    Walter Orenstein is with the Emory University Vaccine Center in Atlanta, Georgia. He has spent his life working to end measles. Orenstein says possible effects of the disease are worse in poor countries. In those countries children are already at greater risk. They may be malnourished (营养不良的). They may have damaged immune systems. They may be underweight and may have no access to health care so measles is a big killer, he said.

    You have a 90 percent chance of getting measles if you have not been vaccinated and you come in contact with someone who has it. Dr. Rebecca Martin is the Director of the Center for Global Health at the U.S. Centers for Disease Control. She is working to remove measles from Africa completely. It is very infectious. It will find nearly everybody who is not protected against measles, Martin said.

    Health experts advise patients to get two treatments of the measles vaccine. U.S. health officials say educating parents about both the disease and the vaccine is an important step in stopping the spread. Equally important is making vaccination a top goal of health systems worldwide.

For a number of Indians who for over half a century have replayed a race again and again, Milkha Singh's 400 metres final run at the Rome Olympics should be among the greatest heartbreaks in global sporting history. In fact, they hoped it would throw up a different result.

However, continued praise for the man decades later is due to the effort by India's greatest track athlete on that September day in the Italian capital, though he still missed out on becoming India's first Olympic track medallist.

As he was growing up, he used to run barefoot daily on hot sand to school, which was situated 20 kilometres from his house. He thinks this was good training but knows it is not possible to ask children to do this today. However, he does feel that the early identification of talented athletes is also important for India's athletic teams to shine.

India has in the last few years judged success purely in terms of medals, but looking into the past reveals how a more generous generation saluted Milkha as a pioneer. Milkha is India's finest track athlete of all time. He remains the only Indian male to win an individual Commonwealth Games athletics gold—he won the 400 metres at Cardiff in 1958，the first athlete from independent India to do so.

Since retiring from athletics, the former champion athlete has set up the Milkha Singh Charitable Trust, which helps poorer families survive if an athlete in their family has died. A percentage of the profits from the film Bhaag Milkha Bhaag are going to his trust.

Finally, let's read a quote from Milkha himself: "There is no shortcut to success." A scene in the film shows Milkha Singh running with injured feet—this actually happened. "I haven't found an alternative to hard work. You need to be patient, dedicated and true to yourself and your work."