When other nine-year-old kids were playing games, she was working at a petrol station. When other teens were studying or going out, she fought to find a place to sleep on the street. But she beat these terrible setbacks（挫折） to win a highly competitive scholarship and gain entry （录入）into Harvard University. And her amazing story has inspired a movie, “Homeless to Harvard: The Liz Murray Story”.

    Liz Murray, a 22-year-old American girl, has been writing a real-life story of willpower and determination. Liz grew up with two drug-addicted parents. There was never enough food or warm clothes in the house. Liz was the only member of the family who had a job. Her mother had AIDS and died when Liz was just l5 years old. The effect of that loss became a turning point in her life. Connecting the environment in which she had grown up with how her mother had died. She decided to do something about it.

    Liz went back to school. She threw herself into her studies, never telling her teachers that she was homeless. At night, she lived on the streets. “What drove me to live on had something to do with understanding, and by understanding that there was a whole other way of being. I had only experienced a small part of the society,” she wrote in her book Breaking Night.

    She admitted that she used envy （妒忌）to drive herself on. She used the benefits that come easily to others, such as a safe living environment, to encourage herself that “next to nothing could hold me down”. She finished high school in just two years and won a full scholarship to study at Harvard University. But Liz decided to leave her top university a couple of months earlier this year in order to take care of her father, who has also developed AIDS. “I love my parents so much. They are drug addicts. But I never forget that they love me all the time. ”

    Liz wants moviegoers（常看电影的人） to come away with the idea that changing your life is “as simple as making a decision”.

    The world has lost one of its brightest stars. British physicist Stephen dies on March 14, at the age of 76.

    Hawking is probably the world's most famous scientists after Albert Einstein. He is an expert on black holes. He has devoted his whole life to digging into the beginning (and the end) of the universe. “My goal is simple,” Hawking once said. “It is to completely understand the universe, why it is as it is and why it is there at all.”

    Hawking's achievements are even greater if you think about his disability. When he was 21, Hawking caught a bad illness that slowly stopped him form moving or talking. For a period of time, he had no way to communicate except by blinking（眨眼）. Later he sat on a wheelchair with a computer by his side. To communicate, he moved two fingers to control the computer's mouse. He selected his words from the screen, which were then spoken by a voice synthesizer（音响合成器）.

    “I have had the disease for most of my life,” Hawking once said. “Yet it has not stopped me from being successful at my work.”

    Though Hawking was a disabled man, he made great achievements. He received many awards and prizes for his work during his lifetime. This included winning the Albert Einstein Award, which stands for the highest achievement in theoretical physics.

    Despite the fact that he's no longer with us, his legacy will surely live on. As Sajid Javid, a UK government minister, put it, “A brief history on Earth; an eternity in the stars.”

    Do you ever wonder why trees begin to bud (发芽) earlier in some cities? Scientists finally found the answer but it's not very pleasant. New science suggests a relationship between light pollution and the timing when trees produce buds, which signals the arrival of the spring season.

    Light pollution is defined by the Lighting Research Center as the unwanted consequence of outdoor lighting such as street lights. Excessive (过多的) man-made light at night results in disturbed natural cycles, and also prevents the observation of stars and planets at night. But its effect on the environment goes beyond that.

    By studying some trees, researchers found out that trees that are more exposed to artificial lighting at night bud up to 7.5 days earlier than those at the natural nighttime setting. And they found out that light had a more significant effect than temperature when the buds came out. The early budding may cause problems for insects, which feed on leaves, and the birds which then feed on them in turn. Professor Richard, who helped lead the research, explained that more than the budding of trees, the study implies the danger to the balance of the ecosystem. “At the moment, caterpillars (毛毛虫) are timed to hatch to make the most of the opportunities to feed on freshly budded leaves, and birds hatch in time to feed on the young caterpillar,” he said.

    Migratory (迁徙的) birds are also negatively affected by light pollution. The glare might confuse them and make them lose their flying sense. The phenomenon might explain why some birds accidentally knock into buildings.

    Such results stress the need to pursue studies that aim to measure the effect of light pollution. If the issue were left to continue, it is estimated that by 2100, spring would begin almost a full month earlier than it does today.

    With its snow-covered mountains and a variety of wildlife, Yellow Stone National Park is one of the scenic treasures of the United States. Located primarily in Wyoming, the park hosts millions of visitors every year. If you plan to travel within the park, keep in mind advice from the National Park Service.

    Seasonal Travel

    Travel varies vastly from season to season. Roads are generally open in the summer except for cases of rock or mud slides, wild fires, accidents or road construction. Early snows in the fall can cause some roads to close temporarily. In the winter almost all roads are closed to motor vehicles, but snowmobiles and other snow vehicles with tracks are allowed. Roads begin to open for the spring by the latter part of April but can close if snowfall continues.

    Driving Time

    Grand Loop is the main road through Yellowstone National Park; it passes by most of the major attractions. These include Old Faithful, Yellowstone Lake and the Grand Canyon of Yellowstone. The maximum speed limit on the Grand Loop is 45 miles per hour, but the speed limit drops during some of the winding and twisting sections of this narrow road. Allow yourself at least two days to fully travel the loop due to the size of the park and being sometimes stuck in heavy traffic.

    Safety Awareness

    Buffalo(水牛)often block the roads in the park as they move through the fields. If a group is traveling across the road you are on  you can either wait for them to pass or find an alternative route. If you get out of your vehicle, the National Park Service says to stay at least 25 yards from any buffalo (and 100 yards or more away from bears and wolves). Buffalo are particularly unpredictable and charge people at speeds up to 30 mph.

    You can take your bicycle on any public roads and routes designed for bikes, but bicycles are not allowed on the park roads which are narrow with few shoulders. Altitudes range from 5, 300 to 8, 860 feet. The National Park Service recommends cyclists wear helmets and noticeable clothing.

    Military training has long been considered a ritual (仪式) that freshmen must go through in order to officially start their college lives. While some question the necessity of such training. Many students see military training as a campus tradition that should be maintained.

    Early in February, the Ministry of Education issued a new regulation that colleges and universities should carry out a minimum of 14 days compulsory military training for freshmen.

    In a report by Beijing Evening News, Hou Zhengfang, a Beijing-based education PhD, questioned the benefits of military training. "The training routine does little to improve students' physical fitness over only two weeks' time. Maybe some disaster prevention training, such as earthquake survival or escaping from fires would be of greater benefit."

    Meng Yang, a 19-year-old freshman at Guangxi University, fainted during training. She said that many students, especially girls, are willing to train under direct sunshine. "For me, military training is physically challenging and even damages my health."

    According to Li Jian from the student affairs office of Guangzhou University, feeling dizzy happens frequently during military training and the school has received a lot of complaints from both students and parents: "But I still think military training is a good thing. Students are easier to manage after the military training. They became more positive about their new environment after the training."

    Although autumn is fast approaching Beijing, the noon heat burns 3300 freshmen on Tsinghua University's campus. Chu Jinjing, a freshman majoring in medicine, did feel some discomfort while training in sweaty clothes in the glaring heat, the 18-year-old still enjoyed being part of group going through strict exercises. "By going through this tough training, students bond faster and a sense of belonging to the school can be formed. I've made a lot of friends already."

    According to the Ministry of Education, the purpose of military training is to teach students discipline, the spirit of teamwork and endurance. But in reality, according to Xiong Bingqi, deputy director of the 21^stCentury Education Research Institute, the effect is not satisfying. "Such goals require long-term development. It is unrealistic to expect military training to make a difference in only 14 days." He thus suggests that it should be up to schools to conduct military training in a way that best suits their students.

    However, Wang Wenhui, an 18-year-old freshman from Xi'an Jiaotong University, sees military training as a tradition that reaches beyond character building. "From junior and senior high school to college, we join military training to start a new journey. I would feel a bit incomplete without it."

Painting is an ancient medium and even with the introduction of photography, film and digital technology, it still has remained a persistent mode of expression. So many paintings have come into being over the years but only a small percentage of them could be described as "timeless classics". The following are some of the most famous paintings of all time. 

Leonardo Da Vinci, Mona Lisa, 1503—1519

Painted between 1503 and 1519, Leonardo da Vinci's attractive portrait has been a subject of controversy since the day it was made, due to two questions: Who's the subject and why is she smiling? A number of theories for the former have been provided over the years: That she's the wife of the Florentine merchant Francesco di Bartolomeo del Giocondo and that she's Leonardo's mother, Caterina. As for that famous smile, its quality has driven people crazy for hundreds of years. 

James Abbott McNeill Whistler. Arrangement in Grey and Black No. 1. 1871

Whistler's Mother, or Arrangement in Grey and Black No. 1, as it's actually titled, speaks to the artist's ambition to pursue art for art's sake. James Abbott McNeill Whistler painted the work in his London studio in 1871. Whistler's mother Anna is pictured as one of several elements locked into an arrangement of right angles. Her severe expression fits in with the rigidity of the composition, and it's somewhat ironic to note that despite Whistler's formalist intentions, the painting became a symbol of motherhood. 

Jan van Eyck, The Arnolfini Portrait, 1434

As one of the most significant works produced during the Northern Renaissance, this composition is believed to be one of the first paintings finished in oils. It portrays an Italian merchant and a woman who may or may not be his bride. In 1934. the celebrated art historian Erwin Panofsky proposed that the painting is actually a wedding contract. What can be reliably said is that the piece used orthogonal perspective to create a sense of space. It feels like a painting you could step into.