The Healthy Habits Survey shows that only about one third of American seniors have correct habits. Here are some findings and expert advice.

    In many American schools the holiday celebrating Dr. Martin Luther King Jr.'s birthday is used as an opportunity to teach children about his life and legacy. But in too many of those same schools, Black children's extraordinary talents are still being wasted today. Nearly three-quarters of Black fourth and eighth grade public school students cannot read or compute at grade level. Black students made up only 18 percent of students in public schools in 2009-2010 but were 40 percent of students who received one or more out-of-school suspensions (暂被停学). A Black public school student is suspended every four seconds. Black students are more than twice as likely to drop out of school as White students. Each school day 763 Black high school students drop out.

    So I applaud the U.S. Departments of Education and Justice for their recent action to address harmful school discipline policies that push so many thousands of black children out of school each year and into the juvenile (青少年) justice and adult prison pipeline. If the education system is to do its part in replacing it with a cradle to college, career and success pipeline, we must end the current practice where children in the greatest need are suspended from school mostly for nonviolent offenses.

    These resources, officially known as "guidance," will help schools and districts meet their legal responsibility to protect students from discrimination (歧视) on the basis of race, color or national origin as required under Title VI of the Civil Rights Act of 1964. As we recognize the 50^th anniversary of the Civil Rights Act of 1964 and so many other important hard-won victories in the Civil Rights Movement this year, we must remember those victories could be lost without meaningful enforcement of the laws advocates fought so hard to win half a century ago.

    While the guidance does not prohibit (禁止) schools or districts from using any particular nondiscriminatory policy, it does call into question some policies that have historically excluded Black students and are of questionable educational value including "zero tolerance" discipline policies which require mandatory (强制的) consequences for certain infractions (违反), and policies that prevent students from returning to school after completion of a court sentence.

    Information of the new guidance recommendations is available at this government website for almost every school and district in the country. Check your own school district now to see whether the discipline policy is focused on creating a positive school climate and preventing misbehavior, whether consequences are clear, appropriate and consistent, and whether there is a commitment to fairness in the application of discipline.

    Trees are useful to man in three important ways: they give him wood and other useful things, they give him cool places, and they help to stop drought and flood.

    Unluckily, in many parts of the world, man has not found that the third of these points is the most important. Man wants to make money from trees, so he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And also, he is usually too careless to plant and look after new trees. So the forests slowly disappear.

    This does not only mean that man will have fewer trees. The results are even worse: for where there are trees, their roots break up soil-make the rain in-and also bind the soil, thus stopping it from being washed away easily; but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing is left but useless desert.

    For thousands of years, people have known that the best way to understand a concept is to explain it to someone else. "While we teach, we learn," said Roman philosopher Seneca. Now scientists are bringing this ancient wisdom up to date. They're documenting why teaching is such a fruitful w ay to learn, and designing creative ways for young people to take part in instruction.

    Researchers have found that students who sign up to tutor others work harder to understand the material, recall it more accurately and apply it more effectively. Student teachers score higher on tests than pupils who're learning only for their own sake. But how can children, still learning themselves, teach others? One answer: They can tutor younger kids. Some studies have found that first-born children are more intelligent than their later-born siblings(兄弟姐妹). This suggests their higher IQs result from the time they spend teaching their siblings. Now educators are experimenting with ways to apply this model to academic subjects. They arrange college undergraduates to teach computer science to high school students, who in turn instruct middle school students on the topic.

    But the most cutting-edge tool under development is the "teachable agent" — a computerized character who learns, tries, makes mistakes and asks questions just like a real-world pupil.

    Computer scientists have created an animated(动画的)figure called Betty's Brain, who has been "taught" about environmental science by hundreds of middle school students. Student teachers are inspired to help Betty master certain materials. While preparing to teach, they organize their know ledge and improve their own understanding. And as they explain the information to it, they identify problems in their own thinking.

    Feedback from the teachable agents further improves the tutors' learning. The agents' questions forces student tutors to think and explain the materials in different ways, and watching the agent solve problems allow s them to see their know ledge put into action.

    Above all, it's the emotions one experiences in teaching that improve learning. Student tutors feel upset when their teachable agents fail, but happy when these virtual pupils succeed as they develop pride and satisfaction from someone else's accomplishment.

How Do People Plan Their Life?

    The story of King Midas is not true. No man could really touch the things around him and make them turn to gold. It could be wonderful if we could turn things into gold as in the story. But the "magic touch" the life without work is seldom part of life in an everyday world.

    It costs money to do the things you want to do and to buy the things you want to buy. In order to give a present for a birthday you must first earn the money before you have any to spend. Your home your food and your clothes are basic needs. Everyone needs these three things. Many other things we want are really luxuries. Basic needs and luxuries together form our standard(标准)of living. Many of the things we feel we "need" in our homes would be regarded as luxuries to other people in other parts of the world.

    Have you ever helped plan a family budget(预算)?If you know you have to balance the whole money the family have earned you should pay for gas electricity water and your house. You should also plan for holidays and other special uses. At the same time you should have some of your money to be saved.

    How people earn their money and how they spend their money is an important aspect of the study of economics.

The summer reading season is here. Some people will opt for paperbacks because they' re easy to borrow and share. Others will go for e- readers. But which is the more environmentally sustainable option?

According to 2023 data from the literary industry research group Words Rated, when it comes to pulp(纸浆) and paper, print book publishing is the world's third- largest industrial greenhouse gas producer, and32 million trees are cut down each year in the United States to make paper for books. 

So many publishers are switching to on- demand printing. For example, Chronicle Books, are reducing their initial print runs to see how well the titles sell before they print more. " We felt that it was better to have a higher cost and have less waste, " said Chronic le Books president, Tyrrell Mahoney. 

Publishers are also rethinking book design. It might be a surprise, but certain fonts(字体) can be more climate- friendly by using less ink and less paper. 

Digital reading seems to have a considerable eco- advantage over print because it is paperless, so it saves trees, pulping and shipping. Moreover, tech companies that make e- readers such as Amazon, which sells the market- leading Kindle e- reader, offer recycling programs for old devices. 

" By choosing e- books as an alternative to print, Kindle readers helped save an estimated 2.3 million metric tons of carbon emissions over a two- year period, " said Corey Badcock, head of Kindle product and marketing. 

But digital devices also come with a substantial carbon footprint, mainly at the producing stage. Their cases are made with fossil- fuel- derived plastics and the minerals in their batteries require resource- heavy mining. 

Berners- Lee, the author of The Carbon Footprint of Everything , said the average e- reader has a carbon footprint of around 80 pounds. " This means that I've got to read about 36 small paperback books- worth on it before you break even, " he said. 

" If you buy an e- reader and you read loads and loads of books on it, then it's the lowest carbon thing to do, " Berners- Lee said. " But if I buy it, read a couple of books, and decide that I prefer paperback books, then it's the worst of all worlds. "