On Monday, the Centers for Disease Control and Prevention predicted that 42% of Americans could be overweight by 2030. Our expanding waistlines lead to not only a medical problem, but according to a recent article In The New York Times, it could also endanger personal safety in some situations—in an airplane crash, for example.

    The New York Times' Christen Negroni reports that engineers and scientists are questioning whether airplane seats are adequately constructed to protect overweight travelers. Government standards for airplane seat strength（强度）— first set moe than 60 years ago — require that the seats be made for a passenger weighing 170 pounds (77kg). Today, the average American man weighs nearly 194 pounds (88kg) and the average woman 165 pounds (75kg). Negroni reports:

    “If a heavier person completely fills seat, the seat is not likely to behave as intended during a crash,” said Robert Salazar, the leading scientist at the Center for Applied Biomechanics at the University of Virginia. “The energy absorption that is built into the aircraft seat is likely to be overpowered and the passengers will not be protected properly.”

    “Nor would the injury be limited to that passenger only,” Dr. Salzar said. “If a seat or a seat belt fails,” he said, “those people who are seated nearby could be endangered from 'the uncontrolled movements of the passenger'.”

    Most complaints about airplane seats focus on their lack of comfort and high ticket price, and whether overweight passengers should be made to buy two seats. But The New York Times' article brings up another reason to feel anxious about flying. Investigators of the issue got in touch with the airplane seat and seat belt makers, but they refused to comment on the problem. Experts agreed that crash testing should be done with overweight dummies （人体模型）. Both airplane seats and seat belts should be tested, they said.

    Fortunately, however, according to Nora Marshall, a senior adviser at the National Transportation Safety Board, the board's investigators have never seen an accident involving a commercial plane in which the weight of a passenger was a problem.

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    Are you carrying too much on your back at school? You're not alone. Back experts (专家) in the USA are worried about that young students are having back and neck problems because they are carrying too much in their backpacks .

    “It hurts my back when I run,” said Ebelin Reyes, a student in Virginia. “It's hard to get up the stairs with my backpack because it's too heavy.” Students have to carry heavy backpacks on their backs for a whole week's study. Ebelin is one of them. They have regular (固定的) backpacks with two straps (带子) to carry them, but a number of students with heavy loads (负担) have switched to rolling backpacks. The backpacks have wheels and can roll on the ground. Shirley Park's backpack weighs 10 kilos, and she said, “I'll change to a rolling backpack because I am starting to have back pain.”

    How much is too much? Experts say that students should carry no more than 10% to 15% of their own body weight. A few students have had a good idea to lighten (减轻) the load: less homework.

Doctor's suggestions:

⑴Lighten the load. Take home only the books the students need that day.

⑵Wide straps are better. They can send out weight over your shoulders (肩) and be sure to wear backpacks with two straps.

⑶The heaviest things should be packed closest to the back.

⑷Bend (弯曲) both knees when you pick up the pack, don't just bend over the waist (腰).

    Eve was waiting in the corridor outside her class. She was feeling sick. She had two exams that day and physics was first. She really hated physics. It was her worst subject. Lisa looked back at her, and then looked away quickly. Eve thought she looked guilty. She didn't have a problem with physics. She didn't have a problem with anything... Miss Perfect!

    "Hi, Eve! So what's wrong with you and Lisa?" asked Tina, "I thought you were friends." "Yes, so did I," said Eve. "But she hasn't spoken to me for two weeks now. She promised to help me review for the physics exam too, but then she's ignored all my calls and texts."

    While in the exam, Eve found Lisa was holding her phone on her knee under the table and reading from it. Eve couldn't believe it! Is that how Lisa always got such good grades? She thought about telling the teacher, but she hesitated. The next exam was history. That was Eve's favorite subject but she couldn't concentrate. She didn't know what to do about Lisa. Just then, Mr. Reed, their teacher, walked past. "Mr. Reed…"

    Lisa was called to the teachers' office and there waited Mr. Reed…

    The history test was over. Eve was walking towards the school gate when she heard footsteps behind her. It was Lisa. Eve could see that she had been crying. "Listen," said Lisa. "I'm really sorry I haven't answered your calls, but my dad had a heart attack two weeks ago and he's in hospital. He had a big heart operation today and I was very worried about him. So I was reading texts from my mum, but Mr. Reed caught me. He thought I was cheating. He believes me now, but I have to take the exam again. I'm sorry I didn't tell you what was happening. Will you forgive me?"

    Life is a process. It is said that it doesn't come the same again; it is glad that the same doesn't have to come back again.

    In this life, what did you miss?

    The wife asked the husband when she was 25. Worried, the husband replied, "I missed a new job opportunity."

    When she was 35, the husband angrily told her that he had just missed the bus.

    At 45, the husband sadly said, "I missed the opportunity seeing my close relative before his last breath."

    At 55, the husband said disappointedly, "I missed a good chance to retire."

    At 65, the husband hurriedly replied, "I missed an appointment with the dentist."

    At 75, the wife did not ask the husband anymore, the husband was kneeling in front of the very sick wife. Remembering the question the wife used to ask him, this time he asked the wife the same question. The wife, with a smile and peaceful look, replied, "In this life, I did not miss having you!"

    The husband was full of tears. He always thought that they could be together forever. He was always busy with work and something unimportant. So much had he never been thoughtful to his wife. The husband hugged the wife tightly and said, "Over 50 years, how I had allowed myself to miss your deep love for me."

    In the busy city life, there are many people who are always busy with work. These people are busy with their jobs, and sacrifice all their time and health to meet the social expectations. They are unwilling to spend time on health care. They miss the opportunity to be with their children in their growing up. They neglect the loved ones who care for them, and also their health.

    Nobody knows what is going to happen one year from now. Life is not permanent, so always live in the now.

    Environmentalists said our planet was bound to die. Now one man says they are wrong. “Everyone knows the planet is in bad shape,” thundered a magazine article last year. “Species are being driven to die out at record rates, and the rivers are so poisonous that fish are floating on the surface, dead.”

    But there's growing belief that what everyone takes for granted is wrong: Things are actually getting better. A new book is about to overturn our most basic assumptions about the world's environment. Rivers, seas, rain and the atmosphere are all getting better.

    The total amount of forests in the world is not declining. The Skeptical Environmentalist by Bjorn Lomborg, professor of statistics at the University of Aarhus in Denmark, is an attack on the misleading claims of environmental groups, and the “bad news” culture that makes people believe everything is getting worse.

    Now the attacks are increasingly coming from left-wing environmentalists such as Lomborg, a former member of Greenpeace. The accusation is that, although the environment is improving, green groups — with profits of hundreds of millions of pounds a year — are using scare tactics (战术) to gain donations. Lomborg's book doesn't deny global warming — probably the biggest environmental threat — but destroys almost every other environmental claim with many official statistics.

    The Worldwatch Institute claims that deforestation(采伐森林) has been speeding over the last 30 years. Buy Lomborg says that is simply rubbish. Since the dawn of agriculture the world has lost about 20% of its forest cover, but in recent decades the forest area's depleting has come to a stop. According to UN figures, the area of forests has remained almost steady, at about 30% of total land area, since 1940s. Forests in countries such as the US, UK and Canada have actually been expanding over the past 40 years. Despite all the warnings the Amazon rainforest has only shrunk by about 15%.

    Nor are all our species dying out. Some campaigners claim that 50% of all species will have died out within 50 years. But other studies show only 0.08% of species are dying out each year. Conservation efforts have been successful. Whales are no longer threatened and the bald eagle is off the endangered list.

    Environmental groups claim that many of the improvements are the results of their campaigns. Stephen Tindale, director of Greenpeace UK, said, “There are important examples, such as acid rain and ozone, where things weren't as bad as predicted, and that's because our behavior changed.”

    A week ago at Compton Elementary School, Georgia, something wonderful happened. Band students from Hillgrove High School arrived to hang out with and talk to the little guys. They wanted to make sure the school's youngest had food in their homes that week.

    The thing that thrilled people was that this generous idea came from 17-year-old Nathan Jones, not an adult. Jones is a good trumpet (小号) player with the Hillgrove Hawks band. The idea, he said, came to him two years ago during a discussion about community service in a freshman leadership class. Serving the community was nothing new to Jones. For years, he and his family, who recently moved from Orlando, Florida, had been active community volunteers.

    Last year, Jones thought it was a good idea to get the school band involved in community service, only for the young kids in the school. Band director Patrick

    Erwin agreed but decided they had neither the time nor the resources to do it. "It got put on the back burner," Jones said. "This year, I decided to try again." This time, Erwin encouraged Jones to take charge and he did.

    Back in August, Jones challenged the band to raise $5, 000 to help with the cost of packing the meals. Within two weeks, they'd collected $6, 000 in donations, enough to provide 2,500 family meals, including bags of rice, soy protein, vitamins and vegetables. By the end of the month, when poor families are struggling, a bag of food can mean the difference between a full stomach and an empty one for many of those students.

    But HiHgrove's effort isn't just about feeding the body. It's about feeding souls, too.

    Early on, the band's goal was to direct students' focus from getting "likes" on social media to building relationships with the people around them. So the band decided on the message, "What the world needs now is love, not likes" for its half-time show.

    "That means actually going into the community and actually showing love," Jones said. "We're going out and doing what we're telling people to do."