Ireland，Japan，Chinascientists share the 2015 Nobel Prize for medicine．WilliamCampbell，Satoshi Omuraand Tu Youyou jointly won the prize for their work against diseases，theaward-giving body said on Monday．

Tu Youyou, a scientist at the China Academy of Chinese MedicalSciences, has no postgraduate degree. She has never studied or done researchabroad. She is neither a member of the Chi­nese Academy of Sciences nor theChinese Academy of Engineering. However, the 81-year-old phar­macologist hasbecome the first scientist on the Chinese mainland to win a Lasker Award, themedical prize of the Albert and Mary Lasker Foundation.

The Lasker Awards have existed since 1945. Tu was presented the2011 Lasker Clinical Medical Research Award on September 23. She discovered adrug called artemisinin . The drug is now widely used against malaria .

Tu and her colleagues joined a government project to find a newmalaria drug in the late 1960s during the "cultural revolution"(1966-76).  They made 380 herbal extractsfrom 200 potential recipes. The recipes came from traditional Chinese medicalbooks. The team then tested them on malaria-infected mice.  Finally Tu became interested in an extract ofthe plant qinghao, or sweet wormwood .

According to an ancient Chinese medicine book, qinghao was onceused to treat malaria. However, the extract they made in the lab didn't workwell. Maybe, thought Tu, the effective ingredient in qinghao was destroyed byhigh temperatures. Therefore, Tu tried to make the extract with an ether whichhas a much lower boiling point than water.

In 1971, after more than 190 failures, Tu finally got an extractthat was 100 percent effective against the malaria para­sites .The extract wascalled qinghaosu, later renamed artemisinin.

According to a statement on the Lasker Foundation website,during the past four decades, Tu's drug has saved millions of lives. It isespecially important for children in the poorest and least developed parts ofthe world. However, not many people knew of the scientist until she won theLasker Award this month.

Lasker Awards are known as "America's Nobels" for thereason that in the last two decades, 28 Lasker Prize winners have gone on toreceive the Nobel Prize, and 80 since 1945, according to Xinhua News Agency.

" The discovery of artemisinin is a gift to mankind fromtraditional Chinese medicine," Tu said when she received the a-ward."Continuous exploration and development of traditional medicine will,without doubt, bring more medicines to the world.

    The famous director of a big and expensive movie planned to film a beautiful sunset over the ocean, so that the audiences could see his hero and heroine in front of it at the end of the film as they said goodbye to each other forever. He sent his camera crew out one evening to film the sunset for him.

    The next morning he said to the men, “Have you provided me with that sunset?”

    “No, sir,” the men answered.

    The director was angry. “Why not?”  he asked.

    “Well, sir,” one of the men answered, “we're on the east coast here, and the sun sets in the west. We can get you a sunrise over the sea, if necessary, but not a sunset.”

    “But I want a sunset!” the director shouted. “Go to the airport, take the next flight to the west coast, and get one.”

    But then a young secretary had an idea. “Why don't you photograph a sunrise,” she suggested, “and then play it backwards? Then it'll look like a sunset.”

    “That's a very good idea!” the director said. Then he turned to the camera crew and said, “Tomorrow morning I want you to get me a beautiful sunrise over the sea.”

    The camera crew went out early the next morning and filmed a bright sunrise over the beach in the middle of a beautiful bay. Then at nine o'clock they took it to the director. “Here it is, sir,” they said, and gave it to him. He was very pleased.

    They all went into the studio. “All right,” the director explained, “now our hero and heroine are going to say goodbye. Run the film backwards so that we can see the ‘sunset' behind them.”

    The “sunset” began, but after a quarter of a minute, the director suddenly put his face in his hands and shouted to the camera crew to stop.

    The birds in the film were flying backwards, and the waves on the sea were going away from the beach.

    A fire broke out immediately after the quake.The fire started in a chemist's shop and spread quickly.Then the Fire Department in Napier came to help,but they were at a loss to control the fire as a result of losing their water supply.However,the water supply in Hastings,was still usable,allowing them to fight back against the fire.

    The force of the earthquake destroyed many of the city's famous landmarks（地标）.Chunks of the coastline were thrown into the sea.Napier's Bluff Hill,a popular tourist spot,was completely destroyed and thrown into the waters below.

    Most of the major buildings in the city were completely destroyed.Roads and communications across the whole area were cut.People were afraid to enter their homes for days and found shelters at the local Motor Camp or on the beach.There were about 150 aftershocks（余震）in the 24 hours after the main shock.Over the next 2 weeks,there would be 525 such aftershocks.

    La Tomatina, Spain

    Tomato juice flows through the streets of Bunol on the last Wednesday of August as the worlds largest tomato fight happens. Festivities begin in the town square where there is a huge pole covered in soap and with a leg of ham at the top. Participants try to climb up the pole to get the ham as watchers throw buckets of water to them. After a gun is fired to signal the beginning of the fight, people catch the tomatoes and throw each other in the streets until the gun sounds again, marking the end of the event.

    Holi, India

    This spring festival is celebrated throughout the country in late February or early March. The two-day event celebrates the legend of Prahlad, who escaped unharmed from the fire of the evil Holika Dahan. People mark the event by lighting fires and throwing colored powder on one another Children load colored water into toy pistols called pichkari and take aim at passers-by. Holi is known as a happy celebration of the victory of good over evil.

    Burning Man, Nevada

    This infamous festival began in 1986 with the burning of a large figure to mark the summer solstice (夏至). It's since grown into a week-long annual event that draws more than 48,000 people to the Black Rock Dessert. It is held during the week before Labor Day. Participants set up camp in the desert to celebrate art.

    Songkran, Thailand

    This festival marks the Thai New Year, which is celebrated in the second week of April. This is the hottest time of the year in Thailand, so it makes sense that the biggest Songkran tradition is to throw water on people. Thais of all ages join in water fights, using buckets, hoses (软管) and water guns to celebrate the event.

    I travel a lot, and I find out different “styles” of directions every time I ask “How can I get to the post office?”

    Foreign tourists are often confused in Japan because most streets there don't have names; in Japan, people use landmarks（地标）in their directions instead of street names. For example, the Japanese will say to travelers, “Go straight down to the corner. Turn left at the big hotel and go past a fruit market. The post office is across from the bus stop.”

    In the countryside of the American Midwest, there are not usually many landmarks. There are no mountains, so the land is very flat; in many places there are no towns or buildings within miles. Instead of landmarks, people will tell you directions and distances. In Kansas or Iowa, for example, people will say, “Go north two miles. Turn east, and then go another mile.”

    People in Los Angeles, California, have no idea of distance on the map; they measure distance in time, not miles. “How far away is the post office?” you ask. “Oh,” they answer, “it's about five minutes from here.” You say, “Yes, but how many miles away is it?” They don't know.

    It's true that a person doesn't know the answer to your question sometimes. What happens in such a situation? A New Yorker might say, “Sorry, I have no idea.” But in Yucatan, Mexico, no one answers “I don't know.” People in Yucatan believe that “I don't know” is impolite. They usually give an answer, often a wrong one. A tourist can get very, very lost in Yucatan!

For most of us, walking is something we do automatically. It doesn't require much effort, so many of us fail to remember the benefits of walking for health.

Physical activity doesn't need to be hard. Whether you're regularly active or not, even a quick ten-minute daily walk can deliver a host of health benefits. But what happens if we stop walking ahead and start challenging our brains and bodies by walking backwards? Not only does this change of direction demand more of our attention, but it may also bring additional health benefits.

One of the most well-studied benefits of walking backwards is improving stability and balance. Walking backwards can improve how a person walks and balance for healthy adults and those with knee problems. Walking backwards causes us to take shorter, more frequent steps, leading to improve the muscles of the lower legs. But the benefits of changing direction aren't just that- -an interest in backwards movement has led researchers to discover various other benefits. While normal walking can help us maintain a healthy weight, walking backwards may be even more effective. Energy expenditure when walking backwards is almost 40 percent higher than walking at the same speed forwards, with one study showing reductions in body fat for women who completed a six-week backwards walk.

Walking backwards is simple, but that doesn't mean it's easy. So, how can you add walking backwards into your exercise plan? When walking backwards, we're more likely to crash into something or fall over, so in the interest of safety, it's best to start indoors where you won't crash into someone or outside in a flat, open area. Look over your shoulder. Keep your head and chest upright while reaching back with your big toe for each step, rolling through the foot from toe to heel. Once you become more confident walking backwards, you can begin to speed things up.