If you are sitting, please stand up. Move your legs. Touch your toes if you can. Do anything but sit. New research shows that if you cut down on the time you spend sitting, you might live longer. Sitting less than three hours a day might extend your life by two years. Cutting television time to less than two hours a day can add one point four years to life.

    The human body is designed to move. The fact is just the opposite. Modern lifestyles and office jobs rarely give us the chance to move around. We sit while we're eating; we sit in the car; we sit while we are watching TV. And most of us sit for many hours at work. Sitting is something we do all the time. On average, Americans sit for four and a half to five hours a day. But that does not make sitting good for us.

    Though you may exercise often, that does not mean you can sit for the rest of your waking hours. We can't throw away physical activity. It is extremely important. Even if you exercise for 30 minutes a day, what goes on in the other 23 and a half hours a day is also very important.

    Changes are coming to some offices, especially in the design of desks. A “standing desk” lets people stand while they work. Another new design is called the “treadmill desk”. It is an exercise machine that lets you walk slowly in one place. Even some U.S. schools begin to experiment with desks that are part bicycle to keep children moving.

    Many companies may not buy a standing desk for everybody. However, they may get five standing desks or a treadmill desk for their employees and put them in a certain place where people can go for an hour a day to answer their emails or talk on the phone. Experts suggest some other activities: take a walk at lunchtime; walk to the offices and talk directly instead of emailing colleagues. All these activities may help you live longer.

    How would you like to have been born without any ability to feel pain? There are such people. One of them is being studied by doctors at a hospital in New York City. He is a 22-year-old clerk who really does not know the meaning of pain. But he wishes he did.

    Not long ago a packet of matches flared up(骤然烧起) in his hand. Luckily the burn was not serious. It caused large blisters(水泡) but still did not bother him. He said the burn felt like a fly crawling(在……上爬行) on his fingers. It has been the same story as far back as he can remember. He has never had headaches or sore(疼痛的) muscles. Bee stings, cuts and bruises(疼痛的) do not hurt.

    Being free from pain is not as wonderful as you may think. The young man has had to have rotted teeth pulled because he never felt toothache warnings. A sudden attack of appendicitis(阑尾炎) could be deadly. Life without pain is as risky as trying to run a cruise ship without fire alarms.

    20 years ago, a couple of ecologists, Daniel Janzen and Winnie Hallwachs, convinced Del Oro, a large orange juice producer, to donate part of their forestland to a national park in exchange for the right to dump (倾倒) massive amounts of orange peels on a 3-hectare piece of land within the national park, at no cost. Dealing with tons of waste peels usually involved burning them or paying to have them dumped at a landfill, so the proposal was very attractive.

    A year after the contract was signed, Del Oro dumped around 12,000 tons of sticky orange waste in the land. However, another juice company and rival of Del Oro challenged the deal in court, arguing that their competitor was “polluting the national park”. They ended up winning, and the deal between Del Oro and the national park fell through. The 3-hectare piece of land virtually covered with fruit waste was completely forgotten.

    Then, in 2013, Timothy Treuer, a scientist at Princeton University visited that piece of land 15 years earlier. What he found shocked him. “It was completely overgrown with trees and vines,” Timothy Treuer recently said, “the difference between fertilized and unfertilized areas was visually surprised us a lot! We needed to come up with some really good standards to evaluate exactly what was happening there.”

    To confirm that the fruit waste was responsible for the revival of plant life, Treuer and his team spent months picking up samples, analyzing and comparing them. They found “dramatic differences between the areas covered in orange peels and those that were not. The area fertilized by orange waste had richer soil, greater tree-species richness and greater forest coverage. In a sense, it's not just a win-win between the company and the local park—it's a win for everyone.”

    The effect the orange peels had on the land is probably not that surprising to people familiar with composting (堆肥), but what is shocking is that a judge actually called this particular example polluting the national park and stopped it from going forward. Now that Timothy Treuer's study has received worldwide attention, this type of polluting is being seriously considered as a way of bringing tropical forests back to life.

    Since Brandon was a kid, he has loved playing baseball. For him, baseball, was and still is his life and his impetus and drive for staying in school.

    But as Brandon got older, he started making bad choices. He cut classes, hung out with the wrong friends and got suspended(被停学)often. His grandmother took care of the family and his mom worked 12-hour shifts at a car lot, doing everything she could to provide for the family.

    Dr. Decmona Warren, a teacher of a Communities In Schools(CIS), saw the signs but when she tried to help, Brandon wouldn't take it. “When I heard her call my name, I would nearly run away. ”Brandon said later.

    His GPA(平均成绩)fell to a 1. 4 and Brandon was kicked out of the baseball team. He knew if he wanted to play baseball, he had to stop acting like that. Determined to become successful both on the field and in the classroom, Brandon decided to embrace the support from Communities In Schools. He turned to Dr. Warren, who welcomed him as a CIS student with open arms. From tutoring to parent-teacher conferences, he allowed Dr. Warren to become his“school mom”, and slowly, things started to turn around.

    “CIS of Atlanta has made a big difference in my life. This program has taught me to think before I act and make better choices in choosing friends. Before CIS it seemed like every week I was either out of school or in school suspension. Once when I was an honor student in middle school, I found myself failing miserably in almost all of my classes as a freshman in high school. But with the help of CIS I am now back on track, more focused and determined to do better in my academics and behavior. ”

    He's back on the team now playing in the Catcher position, with a 2. 8 GPA. He is already looking at colleges for baseball scholarships.

    Drive through any suburb in the U.S. today, and it's hard to miss the bins that have become companions to America's trash cans. Recycling has become commonplace, as people recognize the need to care for the environment. Yet most people's recycling consciousness extends only as far as paper, bottles, and cans. People seldom find themselves facing the growing problem of e-waste.

    E-waste rapidly increases as the techno-fashionable frequently upgrade to the most advanced device and the majority of them end up in landfills (垃圾填埋地). Some people who track such waste say that users throw away nearly 2 million tons of TVs, VCRs, computers, cell phones, and other electronics every day. Unless we can find a safe replacement, this e-waste may get into the ground and poison the water with dangerous toxins (毒素), such as lead, mercury, and arsenic. Burning the waste also dangerously contaminates the air.

    However, e-waste often contains reusable silver, gold, and other electrical materials. Recycling these materials reduces environmental problems by reducing both landfill waste and the need to look for such metals, which can destroy ecosystems.

    A growing number of states have adopted laws to ban dumping (倾倒) e-waste. Still, less than a quarter of this waste will reach lawful recycling programs. Some companies advertising safe disposal (处置) in fact merely ship the waste to some developing countries, where it still ends up in landfills. These organizations prevent progress by unsafely disposing of waste in an out-of-sight, out-of-mind location.

    However, the small but growing number of cities and corporations that do handle e-waste responsibly represents progress toward making the world a cleaner, better place for us all.

Today's world is not an easy adjustment for young adults. A key skill set for success is persistence(毅力), a characteristic that researchers say is heavily influenced by fathers. Researchers from Brigham Young University discovered that fathers are in a unique position to help their adolescent children learn persistence.

BYU professors Laura Padilla-Walker and Randal Day arrived at these findings after following 325 American families over several years. And over time, the persistence gained through fathers led to higher achievement in school.

"There are relatively few studies that stress the unique role of fathers," Padilla-Walker said. "This research also helps to prove that characteristics such as persistence—which can be taught—are key to a child's life success."

Researchers determined that dads need to practise an "authoritative" parenting style. Authoritative parenting is not authoritarian: rigid, demanding or controlling. Rather, an authoritative parenting style includes some of the following characteristics: children feel warmth and love from their father; responsibility and the reasons behind rules are stressed; children are given an appropriate level of autonomy(自主权).

In the study, about 52 percent of the dads exhibited above-average levels of authoritative parenting. A key finding is that over time, children raised by an authoritative father were significantly more likely to develop persistence, which leads to better outcomes in school.

This particular study examined 11 to 14-year-olds living in two-parent homes. Yet the researchers suggest that single parents still may play a role in teaching the benefits of persistence, which is an avenue of future research.