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.

    For those concerned about wrinkly old skin, it might be a creative solution: an elastic(有弹性的) “second skin” that can be smoothed on to make aged tissue look more youthful.

    The wearable film, developed at the Massachusetts Institute of Technology (MIT), has shown promise in a series of small experiments where it was applied to wrinkles, under-eye bags and areas of dry skin. When applied to the face or body, the thin, transparent layer sticks to the skin and supports the tissue, making it look and behave like younger skin, its producers claim.

    “What we've been able to do is create a cream that you can put on the skin, and then when it's on the skin it can actually form, essentially, an elastic second skin,” said Bob Langer, who led the research. Tests in the lab found that the polymer film (高分子膜), which is only 70 thousandths of a millimeter thick, reduced the appearance of wrinkles and under-eye bags, and helped keep moisture (水分) in areas of dry skin.

    The layer is designed to be applied in the morning, then peeled off at night, In previous studies, the second skin withstood normal daily wear, and the stresses and strains of exercise and swimming, without falling off or causing irritation. It also survived exposure to rain.

    “It's something you can wear for a whole day or longer, depending on the physical forces that get applied to the area where it is worn, "said Daniel Anderson, who helped develop the product at MIT. “You can't tell you're wearing it.”

    While normal cosmetics can mask imperfections on the skin, the new coating changes the way skin behaves by giving it the elasticity of young skin. It was developed with help from two companies.

    Before you were my teacher, I thought that teaching was the last thing I wanted to do. Why would someone want to come in every day and attempt to instruct students, many of whom couldn't care less, or to get paid very little compared with the work he or she put in?

    You may have thought that the only thing I was learning from you was the course, but that's not all l learned. From reference books to funny jokes, you made each class exciting. You always tried to make class charming so that we could be excited about learning. However, those days have gone by.

    Whenever I was confused and needed extra help, you were the exact one to turn to. I would walk into your room for help and there would be several kids. You ran from one student to the next helping each one through their confusion. You could have gone back home after the bell rang. Instead, you chose to Stay and care about what your students did.

    You didn't only care about my learning, but you also cared about other things I was involved in. At the beginning of the year, we wrote down our hobbies and interests. You remembered what we wrote, too. I had missed class for track meets (田径运动会)and when I came back the next day, you would ask me how it went. Many of the teachers never bothered to ask what I liked to do.

    These things showed me the value of teaching. They showed me how much of an influence a teacher can have on a student. I want to be the one that influences students and pushes them toward success. I want students to leave my classroom thinking that their time was worthwhile (值得的). I want to be the inspiration for them that you were for me. Whenever it gets hard for me to continue on this path, I'll remember you and what you did for me.

    On average, primary school children in England have at least three sugary snacks a day, Public Health England (PHE) found. This means that the sugar they consume is three times more than the recommended maximum.

    Children between the ages of 4 and 10 consume 51.2% of sugar from unhealthy snacks. PHE has launched a campaign, Change4Life, to encourage parents to look for healthier snacks of no more than 100 calories, and to limit them to two a day. The campaign advises parents to give their children a maximum of two snacks a day, with each containing no more than 100 calories. The campaign will also offer parents special suggestions on a range of healthier snacks—ones with 100 calories or fewer—at selected supermarkets, PHE said.

    PHE said it had also improved its app so that it could mark the content of sugar, salt and fat in food and drinks. Dr Alison Tedstone told the BBC she hoped the campaign would help parents to choose healthier snacks for their children. “If you wander through a supermarket, you can see much more goods being sold as snacks than ever before,” she said, “It's a common phenomenon that kids' lunchboxes are full of snacks, leading to a lot of calories for lunch. Our research shows that parents usually appreciate a rule of thumb (经验法则). However, they are surprised to know how much sugar their children are consuming in snacks now.”

    Justine Roberts, founder of Mumsnet, said, “The intake (摄入量) of sugar that kids are getting from snacks and sugary drinks alone is pretty astonishing, and it can often be difficult to distinguish which snacks are healthy and which are not. The rule of thumb from Change4Life can help parents make their decision correctly and wisely. ”

    New study shows that when teachers participate in a training program focused on prosocial (亲社会的) classroom behavior, their students are better able to control their emotions, and that children who can regulate emotions are more likely to be academically successful.

    For the study, which appears in Prevention Science, researchers looked at more than 100 teachers and 1,817 students from kindergarten to third grade to see if teachers could support students' emotional and behavioral growth through the Incredible Years Teacher Classroom Management (IYTCM) program.

    The program uses videos and training sessions, along with role-playing and coaching, to help teachers learn management skills such as using behavior-specific praise, building positive relationships with students, and considering how to reduce poor behavior. Teachers in the training group increased interactions with students by 64 percent compared with 53 percent for teachers in the control group without the training.

    "Emotional regulation is the ability to recognize what behavior is appropriate in the present situation," says Wendy Reinke, professor in the College of Education at the University of Missouri. "For example, a student might have difficulty controlling the feeling of anger if he or she becomes annoyed with another student. But under this program, the teacher encourages them to move to a different spot in the classroom, effectively teaching them that sometimes stepping away and taking a break is a good way to calm down and manage8ha8feeling."

    After one school year of using the program in classrooms, students improved their social ability and ability to regulate their emotions. These improvements resulted in an increase in the tests for students in Incredible Years classrooms vs. students in control classrooms. And this classroom management approach can help reduce the risk for struggling learners early on, which could help prevent more accumulative support needs in a child's future.

    In a room at Texas Children Cancer Center in Houston, eight-year-old Simran Jatar lay in bed with a drip(点滴)above her to fight her bone cancer. Over her bald(秃的)head, she wore a pink hat that matched her clothes. But the third grader's cheery dressing didn't mask her pain and weary eyes.

    Then a visitor showed up. "Do you want to write a song?" asked Anita Kruse, 49, rolling a cart equipped with an electronic keyboard, a microphone and speakers. Simran stared. "Have you ever written a poem?" Anita Kruse continued. "Well, yes," Simran said.

    Within minutes, Simran was reading her poem into the microphone. "Some bird soaring through the sky," she said softly. "Imagination in its head…" Anita Kruse added piano music, a few warbling (鸣,唱)birds, and finally the girl's voice. Thirty minutes later, she presented Simran with a CD of her first recorded song.

    That was the beginning of Anita Kruse's project, Purple Songs Can Fly, one that has helped more than 125 young patients write and record songs. As a composer and pianist who had performed at the hospital, Kruse said that the idea of how she could help "came in one flash".

    The effect on the kids has been great. One teenage girl, curling(蜷缩)in pain in her wheelchair, stood unaided to dance to a hip-hop song she had written. A 12-year-old boy with Hodgkin's disease who rarely spoke surprised his doctors with a song he called I Can Make It.

    "My time with the kids is heartbreaking because of the severity of their illnesses," says Anita Kruse. "But they also make you happy, when the children are smiling, excited to share their CD with their families."

    Simran is now an active sixth grader and cancer-free. From time to time, she and her mother listen to her song, Always Remembering, and they always remember the "really sweet and nice and loving" lady who gave them a shining moment in the dark hour.