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    Yao Beina was not only a popular singer but also an energetic and warm-hearted angel. She donated her corneas(眼角膜) to two men after her death.

    Yao was born in a music family in September 1981 in Wuhan. She started to learn music at the age of 4, and she sang her first song on the stage when she was 9. Yao did quite well in singing, so she took part in the 13th Youth Singing Competition and won the first prize.

    She became well-known to the public after making some songs for the hit TV drama The Legend of Zhenhuan(《甄嬛传》), and the mandarin version(中文版本) of Let It Gofrom Disney's Frozen(《冰雪奇缘》). In July 2013, she competed in The Voice of China II and finally got the second place in Na Ying's team. She had won many music prizes.

Yao Beina was unlucky to be diagnosed(诊断) with breast cancer(乳腺癌). She had a successful operation(手术) in 2011. She has fought against the illness for about four years while keeping singing, but sadly she failed. Although she's gone, her fans will remember her beautiful voice and kindness forever.

    Pablo Casals was a great cello（大提琴） player and music writer. He was born in Catalonia, Spain. He first heard the cello played when he was 11.Generally, he felling love with the instrument. So, he went to school at the Escuela Municipal de Musica. He focused on his studies and got high grades. When he finished school, he played the cello in the queen's palace. He became more and more famous. Soon, he began to play for audiences worldwide.

    After the events of the Spanish Civil War, Casals left Spain. He refused to go back. He went to live in Puerto Roco. He continued his work as a teacher. Healso recorded many albums（相册）. At the age of 80 he married his third and final wife, Marta Montanez.

    Casals died in 1973.The king of Spain had enjoyed Casals' music very much. He ordered a postage stamp to be made. It showed a picture of the cellist.

    Like many high school graduates, Maggie Doyne didn't go straight to college. She decided to travel and arrived in western Nepal in 2006. A war had just ended there and left many children living on the streets. They were often forced to work at hard physical jobs for little money.

One day, while walking down a country road, Doyne saw a little girl breaking up rocks. She soon learned that 7-year-old Hima sold the rocks to support her family. With deep sadness, she decided to pay Hima's tuition(学费) for school. Encouraged by the changes in the child, Doyne thought, "If we can help one child, why not 10？"

    Doyne felt that the street children's greatest need was a home. She found a piece of land for sale and bought it with $5,000 she saved from years of babysitting (当临时保姆). In 2008 the Kopila Valley Children's Home was set up. With the help from the community, another goal was reached in 2010—the Kopila Valley School. Over 350 children now attend the school and over 50 live in the home.

    Today, Doyne lives in the home and is "mum" to the kids.

    Mick Polly, an owner of a toy store, lives with his teenage daughter Carolina in Kentucky. He is known as the Bike Man. Over the past five years, Mick has built hundreds of bikes for needy kids.

    One day in 2012, a 13-year-old boy with a broken bike walked by Mick's house. "I was working in my garage(车库); and he asked if I could fix it," says Mick, now 53.

    The boy's bike had a broken wheel. Mick sent a post(帖子) on Facebook, asking his friends if they had the needed part. One friend saw the post and gave away two used bikes. Mick took parts from each to build a new set of wheels for the boy.

    Soon after, Mick repaired a bike for the boy's brother and fixed one for his sister. Word spread, and during the year, he had fixed up lots of bikes for local kids whose parents were not able to afford new ones.

    "People are throwing away bikes day and night," says Mick.

    Mick puts the bikes and bike parts in his garage. "I take off the good tires or the handlebars or the seats and use them," he says.

    Up to now, the bike man has repaired hundreds of bikes and given away nearly 700 newly repaired bikes. They're free, but the kids must agree on two things: They have to learn how to put waste things to good use and they have to try their best to study in school.

    If a kid's grades are low, Mick requires a teacher's note "saying that you're doing your best". Mick also hopes the bikes will get kids off the sofa. "When I was growing up, we all rode our bikes," he says. "Hopefully these kids can get some exercise."