A mother's love

    I'm a New York City firefighter. Every day, I see terror— sometimes even death. But the day I found Scarlett was different. That day I saw life. And love.

    We were responding to a call about a burning garage. Outside, I heard the sound of cats crying. I couldn't stop — I would have to look for the cats after the fire was put out.

    It took a long time to finally bring the big fire under control, but we did it. No one inside was hurt.

    At that point I was free to investigate the cat noises. There was still a lot of smoke and heat coming from the building. I followed the meowing(猫叫) to a spot on the sidewalk near the front of the garage. There, crying and huddled(挤作一团) together, were five terrified kittens. They must have been inside the building, as their fur was badly singed(烫烧).

    I left the five kittens in a box on a neighbor's porch(门廊).

    I wanted to find the mother. It was obvious that she had gone into the burning garage and carried out all of her babies, one by one —unbelievable.

    We finally found her. She was badly burnt: her eyes were blistered (起水泡), her paws(爪子) were blackened, and her fur was singed all over. You could even see her reddened skin beneath the burned fur. She could barely move. I picked her up, and she relaxed in my arms as much as her pain would allow. Sensing her trust, I shed a tear. I was determined to save this brave little cat and her family.

    The vet told me they would observe the kittens and their mother overnight, but they weren't optimistic about the mother's changes.

    About a week later, I found out she was going to live. One of the technicians suggested we name her Scarlett, because of her reddened skin.

    Knowing what Scarlett endured(忍受) for her kittens, it melted my heart to see her reunited with them. She touched each of them again, nose to nose, to make sure they were all safe. She had risked her life five separate times — and it had paid off. All of her babies had survived.

    As a firefighter, I see heroism(英雄事迹) every day. But what Scarlett showed me that day was the kind of bravery that can only come from a mother's love.

    Experts generally consider BMI for kids to be a good measure of body fat, at least among heavier children. But in some cases it might be misleading. Athletic kids, in particular, may fall into the overweight category when they are actually muscular.

    Your child's BMI is important, but it is only a piece of the picture. If a BMI percentile (体重指数) indicates that your child is not within the healthy range, she needs a complete weight and lifestyle evaluation with a doctor.

    Experts recommend that kids of all ages and all weight categories follow these healthy guidelines to keep weight in control. It's easy to remember them as “5 — 2 — 1 — 0” every day.

    5 > Everyone in your family needs five servings of vegetables and fruit. Keep serving them even if kids don't eat them. If they see a food over and over, they're more likely to try it in the end.

    2 > Limit TV-watching to no more than 2 hours a day. Family members who use other “screens”—video games or computers, for instance, get less TV time. And kick the TV out of all bedrooms.

    1 > Get 1 hour of physical activity. Add up the minutes each family member is moving —it should be 60 minutes or more for each person. Start small and keep adding if necessary.

    0 > That's how many sugar-sweetened beverages you should have a day. Juice drinks such as lemonade and fruit punch, sodas, tea, and coffee can all have added sugar. Stick to water and reduced-fat milk instead.

    Do you love Beats headphones, True Religion jeans, and UGG shoes? These are some of the most popular brands(品牌) around. They are also expensive. But some experts say they are not much better than cheaper brands.

    For example, Jim Wilcox works for Consumer Reports. He tested all kinds of headphones. He says that $80 Koss Pro headphones provide basically the same quality and comfort as Beats. So why do people pay twice or even 10 times as much for the hottest brands?

    Experts say because it's fashionable, and expensive brands send a message. Brands say "I belong" or "I can afford it."

    Some people think that expensive brand names are worth the price. They say that some designer clothes are really of top quality and that they last longer than cheaper brands. Some teenagers choose to wear popular brands because these brands make them feel good about themselves.

    Alexandra Allam, 17, likes to buy brand-name products. "I'd rather spend the extra money getting something I know I'll be satisfied with." she says. Her friend Emmy Swan agrees, saying "As long as you can afford it, it seems reasonable to buy what you want." But not all teenagers agree. "Spending hundreds of dollars for designer is stupid and unreasonable," says Daniel Steinbrecher, 16. "It's fake（假的）happiness."

    People who are against wearing expensive brand names say that many designer brands aren't any better. "It's wasteful to buy things just because they are popular." says Edmund Williams, 15. "You'll feel better if you buy things because you like them. If you have extra money to spend, it would be better to give it to people in need."

    Today, I felt upset, I decided to take a walk even though I didn't know where I would go. The most extraordinary thing happened when I was out on this walk. I saw an old man sitting on a chair. He was a seller of second-hand shoes. He seemed so tired and nobody was buying his shoes.

    I wanted to give him something but I had not brought anything with me. Then, a little girl came toward him. I heard the child say, ''Grandfather, may I polish your shoes?" That old man took pity on her, smiled and he gave her a shoe to polish. The girl said, I polish the shoe because I need money to buy my brother a new school uniform. The old man answered, "Oh, little girl. Just stop doing this. Come with me and I will buy you a uniform.”

    Then they walked to a market (I followed behind) and he bought her a uniform. The girl was so happy. She said, Thank you so much for doing this." Then she left, leaving the old man smiling. He walked away from the market, but I stopped him.

    I whispered in his ear, "You are a hero! Thank you for your kindness!” As I walked away, I glanced back and I could see him still smiling. I was blown away by the kindness I had just seen. Someone who had so little himself was able to show such incredible generosity! Amazing!

    My own sadness had completely disappeared, chased away by the light of this kind act. I began realizing that I have a lot to be thankful for.

At Englands University of Plymouth, Professor Eduardo Miranda has been programming pairs of robots to compose music. Miranda's robots have simple " vocal cords" (声带)and are programmed to sing and to listen to each other. The robots' unique warbling sounds (颤音) do not perfectly match the human voice, but each machine is exactly sharing music with the other in a new and unique way.

Each robot is equipped with speakers, software that mimics the human voice, a mouth that opens as it "sings," a microphone for ears, and a camera for eyes. The robots also move. Miranda hopes that by studying his robot vocalists, he can discover something about how and why humans create, perform, and listen to music.

When the robots sing, first one robot makes six random sounds. Its partner responds with more sounds. The first robot analyzes the sounds to see if their sequences (序列)) are similar. If they are, it nods its head and commits the sounds to memory, and the second robot notices and "memorizes" the musical sequence, too. If the first robot thinks the sounds are too different, it shakes its head and both robots ignore the sounds. Then the process continues.

Miranda set up an experiment in which he left the two robots alone in his study for two weeks. When he returned, his little warblers had, by imitating each other, not only shared notes but combined them. The product of their cooperation was far from symphonic, but the robots had begun to combine the notes into their own self-developed "songs".

With the help of his warbling robots, one of Miranda's goals is to create music that no human would ever compose. Miranda believes the robots are ideal for this purpose because they would not be influenced by any existing musical styles or rules.