Darek Fidyka, a 38-year-old Bulgarian, had been paralyzed (瘫痪的) from the chest down for four years after a knife attack. Scientists from Britain and Poland took cells from his nose, transplanted (移植) them into his back and re-grew his spinal cord (脊髓). Now he can walk and even drive a car. The doctors were delighted but said it was the first step in a long journey.

    The breakthrough came after 40 years of research by Professor Geoff Raisman, who found that cells had the possibility to repair damage to nasal (鼻腔的) nerves, the only part of the nervous system that constantly re-grows. “The idea was to take something from an area where the nervous system can repair itself and put it into an area that doesn't repair itself,” Professor Raisman said.

    Polish doctors injected (注射) the nasal cells into Mr Fidyka's spinal cord above the injury and used some nerves from his ankle to form a bridge across the damaged tissue. The nasal cells appear to have caused the spinal nerves to repair themselves.

    Professor Raisman achieved this with rats in the late 1990's, but this is his greatest success. “I think the moment of discovery for me was Christmas in 1997 when I first saw a rat, which couldn't control its hand, put its hand out to me. That was an exciting moment, because I realized then that my belief that the nervous system could be repaired was true.”

    Doctors chose the easiest case for their first attempt—it might not work for others. But there is a real sense of hope that an idea once thought impossible has been realized.

    David Nicholls, who helped provide money for the breakthrough, said information about the breakthrough would be made available to researchers across the globe.

    “What you've got to understand is that for three million paralyzed people in the world today, the world looks a totally brighter place than it did yesterday,” he said.

    Australia's koalas could die out within 30 years unless immediate action is taken to stop the losing in population, according to researchers. They say development, climate change and bushfires have all combined to reduce the number of wild koalas sharply.

    The Australian Koala Foundation said a recent survey showed the population could have dropped by more than half in the past six years. The number of koalas was once estimated to be more than 100,000, but now is as few as 43,000.

    The foundation collected field data from 1,800 sites and 80,000 trees to calculate the numbers. In one area in northern Queensland estimated to have 20,000 koalas a decade ago, a team of eight people could not find a single animal in four days of searching.

    The foundation said besides problems caused by cutting down forests, hotter and drier conditions because of global warming had reduced the nutritional value of their main food, eucalyptus (桉树) leaves, leading to poor nutrition for them. Koalas, which live in the forests in Australia's east and south, are very picky about what types of the leaves they eat.

    Foundation chief Deborah Tabart said: “The koalas are missing everywhere we look. It's really no tree, no me. If you keep cutting down trees you don't have any koalas.”She is hoping the new figures will persuade the government's Threatened Species Steering Committee (TSSC) to list the koala as threatened. But committee chairman Bob Beeton said a decision was not likely recently and the koala's status as one of the country's favorite animals would not be a factor. “There's a number of species which are attractive and people have special feelings towards them. We don't consider that,” Mr Beeton said.

    Gold Coast family holidays are always great fun whether you are from Australia or from abroad. There are beautiful beaches, adventure parks, nature parks and so much more.

    There are so many sights to see here. It is a pity to drive in a car and you'll miss a great part of it. Australia is home to many animals and birds that can only be seen when moving slowly and going into the areas that they live.

    When you are on a bicycle, you have the advantage of being able to stop whenever you want to see an interesting animal or bird that you have never seen before. It is a quieter mode (方式) of transportation as well, so you might even be able to take a picture. When you are on the beach, you can breathe that clean air and view the beauty of the water and sand. It is a totally different experience from either simply sunbathing or passing it in a car.

    There are many choices of hiring a bicycle to experience the Gold Coast attractions. There are stores that will fit a bike perfectly to your size. These bikes for both adults and children are in many styles and colors to please any taste. If you have ever wanted to try a tandem bike (双人单车), now is your chance, because they have those too.

    A bicycle hire on Gold Coast is something that everyone should try at least once. This is a wonderful chance for anyone who likes to cycle and it is also a cheap way to travel with your family.

    Fitbit Charge

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    Energize your day with Charge—an advanced activity wristband that tracks your steps taken, distance traveled, calories burned, floors climbed and active minutes. Stay connected throughout the day with real-time fitness statistics and Caller ID on the OLED display. And when the day is done, it automatically monitors your sleep and sets a silent, shaking alarm. Whether you're at the office or on the go, Charge wirelessly syncs (同步) your statistics to your smartphone and computer to help you find the motivation you need to achieve your goals.

    DETAILED INFORMATION

    Size: Small fits 5.5"--6.5", Large fits 6.5"--7.7". Refer to this sizing guide to be sure you get the right fit.

    Activity Tracking -- Accurately track all-day statistics like steps taken, distance traveled, calories burned, stairs climbed, and active minutes.

    See daily statistics, time of day, and exercise mode with a bright OLED display.

    Auto Sleep + Silent Alarm — Monitor your sleep automatically and wake with a silent alarm.

    Caller ID — Get call notice right on your wrist when your smartphone is nearby.

    Access real-time run statistics like time, distance, and pace to stay on track.

    Sync statistics wirelessly and automatically to your computer and over 150 leading smartphones.

    See compatible (兼容的) iOS, Android, and Windows phones.

    FREQUENTLY ASKED QUESTIONS

    How do I reset my tracker?

    If your tracker is not responding, it may be fixed by restarting.

    1 Plug your charging cable into the USB port and insert your tracker into the charging cable.

    2 Insert a paperclip into the small pinhole on the back of the charger.

    3 Press on the pinhole for 3—4 seconds.

    Your tracker will now be reset. Take your tracker out of the charger and insert it back into the wristband.

    How do I charge my tracker?

    Your tracker battery lasts for about 5 days. To charge it, remove the tracker from the band and place it in the charger until all 5 lights are solid.

    If you have more questions, you may log in and post your questions here. We will solve your problems as soon as possible.

    He was a founder of modem Chinese literature. He was regarded as "an old man always telling the truth". Living across two centuries, he experienced many periods of danger and suffering but never lost his beliefs. His name was Ba Jin.

    As the 101-year-old legendary（传奇的）writer passed away in Shanghai after a six-year battle with disease, millions of Chinese were deeply sad. People in Shanghai and Chengdu gathered around his old house and literature museum to mourn for the great man.

    "My school held a series of ceremonies to express our deep sorrow,'' said Zuo Shang, a 17-year-old girl in Shanghai, who appreciates much of Ba's works. "He is a great writer who wrote so many masterpieces, but what I admire about him the most is his courage to tell the truth, 'Telling the truth, being an honest man.' That's what I learned from him," explained Zuo.

    Ba Jin was born in 1904 in Chengdu, Sichuan Province. A son of a wealthy family, Ba helped the poor ever since he was a child. It is they who taught him a strong yet down-to earth way of living.

    Ba finished his first novel, "Destruction", in 1929 during his travels to France. His later masterpieces, "Family" "Spring" and "Autumn", mirrored the struggles, tragedies and loves of the young in a feudal society. The books encouraged Chinese people not to give in to fate and to be their own masters.

    "Ba Jin told the true story of his country and his people. His great love and service to them meant he was thinking about what he could do for them," said Bing Xin, a well-known writer and also his good friend.

    Like other famous writers in China, Ba suffered in the "cultural revolution" during 1966—1976. But several years later, Ba examined his hard experience in strict introspection（自我反省）instead of hatred. His book, "Random Thoughts"， in 1979 displayed his real thoughts with painful sincerity and won him his reputation for honesty.

    "It really hurts to recall my past mistakes, but 1 have to," said the respectable man. "Always tell the truth. Say what you think in the bottom of your heart. That's my life motto."

    On a recent night, while I was busy thinking about important social issues, like what to do over the week﹣end and who to do it with, I overheard my parents talking about my future. My dad was upset not the usual stuff that he and Mom and, I guess, a lot of parents worry about like which college I' m going to, how far away it is from home. Instead, he was upset about the world his generation is turning over to mine, a world he fears has a dark and difficult future if it has a future at all.

    "There will be a disease that kills millions, a disastrous energy crisis, a horrible worldwide depression and a nuclear explosion set off in anger."

    As I lay on the living room couch, listening to their conversation, starting to worry about the future my father was describing, I found myself looking at some old family photos.  There was a picture of my grandfather who was a member of the class of 1942, the war class. Next to his picture were photos of my great﹣grandparents. Seeing those pictures made me feel a lot better. I believe tomorrow will be better than today — that the world my generation grows into is going to get better, not worse. Those pictures helped me understand why.

    I considered some of the awful things my grandparents and great﹣grandparents had seen in their lifetimes: two world wars, killer flu, segregation（隔离） , a nuclear bomb.  But they saw other things, too, better things: the end of two world wars, passage of the civil rights laws.

    I believe that my generation will see better things, too that we will witness the time when AIDS is cured and cancer is defeated. I will see things as incredible to me today as the internet to my father when he was 16.