【推荐1】Nervous suspects locked up in Britain's newest police station may feel relieved by a pleasant yellow color on the door. If they are close to confessing a crime, the blue on the wall might tip the balance.

Gwent Police have abandoned colors such as grays and browns of the 20th-century police cell and have used color psychology to decorate them.

Ystrad Mynach station, which recently opened at a cost of E5 million，has four cells with glass doors for prisoners who suffer from claustrophobia（幽闭恐怖症）. Designers have painted the frames yellow, which researchers say is a calming color. Other cells contain a royal blue line because psychologists believe that the color is likely to encourage truthfulness.

The station has 31 cells, including 12 with a “live scan” system for drunken or disturbed prisoners which detects the rise and fall of their chest. An alarm alerts officers if a prisoner's breathing stops and carries on ringing until the door is opened.

Designers and psychologists have worked for years on color. Blue is said to suggest trust, efficiency, duty, logic, coolness, thinking and calm. It also suggests coldness and unfriendliness. It is thought that strong blues will stimulate clear thought and lighter, soft colors will calm the mind and aid concentration.

Yellow is linked with confidence, self-respect and friendliness. Get the color wrong and it could cause fear, depression and anxiety, but the right yellow can lift spirits and self-respect.

Ingrid Collins, a psychologist who specializes in the effects of color，said that color was an “energy force”,. She said: “Blue does enhance communication but I am not sure it would enhance truthful communication.”

Yellow, she said, affected the mind. Red, on the other hand, should never be considered because it could increase aggression. Mrs. Collins praised the designers for using colors in the cells. Gwent is notthe first British force to experiment with color to calm down or persuade prisoners to co-operate. In the 1990s Strathclyde Police used pink in cells based on research carried out by the US Navy.

【推荐2】Over the last several years, Japanese and Korean beauty services have moved over to the North American market, which may partly explain why we’re now seeing activated charcoal (活性炭) in so many products - it has long been used in those countries as a cleaning ingredient (原料). But there’s another reason for its recent popularity: marketers know we are suckers for anything novel. “Activated charcoal is highly popular on the Internet,”says dietitian Abby Langer. The charcoal in activated charcoal is created by burning carbon-rich materials such as wood and bamboo, turning them into a concentrated black material. Then the charcoal is”activated”by steaming it at high temperatures, which opens up its carbon structure and makes it full of very small holes that can join together dirt, oil, and bacteria on its surface.

However, does it really improve beauty and other products? Here’s the thing: despite some stories of clear skin from nutritionists, personal trainers and movie stars, there is no clinical evidence for the effectiveness of activated charcoal as a beauty quality. Likewise, there is no good evidence showing that using charcoal products for health in the mouth will make your breath fresher or teeth whiter. In a CBC story last year, the Canadian Dental Association wouldn’t recommend using charcoal products because they have no proven health benefits, and they may even damage your enamel(the hard white outer layer of your teeth).

Activated charcoal also enjoys a high status in the food industry, being used by restaurants and food brands to turn a long list of food and drinks a deep black color. So before you shell out extra cash for a lemonade with activated charcoal, remember that you’re paying for the look - there’s no scientific evidence for the”detox(排毒)” action it promises.

There are some proven uses for this stuff, though. In the emergency room. doctors sometimes feed some activated charcoal to patients who have been poisoned. If it’s done quickly - ideally within minutes but up to an hour after being poisoned, while the poisonous substance is still in the stomach - it prevents the body from absorbing it. So yes, activated charcoal might save your life. However, everyday users should know that it doesn’t combine with alcohol, so it won’t magical erase the effects of late-night drinking. Also, be aware that it doesn’t tell the difference between the bad and the good: it will mix with blood pressure medication pills and get them through your system, too.

【推荐1】Rather than continue living a comfortable urban life, this British family has sold their London home in favor of launching the world’s smallest nature reserve to save a nation’s coral reef system. Karolina and Barry Seath—along with their two young daughters—are preparing to move to an island in the Seychelles (非洲塞舌尔群岛)measuring just 1,300 feet long by 980 feet wide (400 by 300 meters).

They’ve launched a charity and teamed up with(与……合作)local biologists in an effort to bring the coral reefs back to life in the smallest African country, which have been almost wiped out by rising sea temperatures. Their land-based coral farm will be only the second of its kind in the world, the other being on Australia’s Great Barrier Reef, to specialize in regrowing coral to restore the reefs.

47-year-old Barry, who is a former policeman, said, “We are just a normal husband, wife and two kids, living the sort of life that most others do, but we felt the need to make a positive change for ourselves, our children, and the world we had largely taken for granted.”

Over the course of several vacations to the Seychelles, the Seaths witnessed the gradual deterioration(恶化)of the reefs. “Every time we visited, we noticed the coral was getting worse and worse,” said Barry. “All the tourists say the same thing. They love the beaches but are really disappointed with the coral.”

Barry felt it was time to make a change and show his daughters an alternative way of eco-friendly living. He then teamed up with experts at the Marine Conservation Society Seychelles in order to develop the facility. Once it is complete, it will be the first large-scale, land-based coral farm in the Indian Ocean. The eco-warriors hope to use the facility to grow around 10,000 corals per year. Barry said, “Our long-term goal is to show everyone that—with just a relatively small investment—you can have a big positive influence on the marine environment.”

【推荐3】Every Sunday at 2 p.m., Marisela Godinez, the owner of El Mesón Tequilería, a Mexican restaurant in Austin, Texas, used to fill a 12-gallon bucket, plus another half-bucket, with leftover food from the restaurant’s all-you-can-eat brunch buffet. “We threw out a lot of food,” she said.

But a few months ago Ms. Godinez signed up to use an app called Too Good To Go. Now, 10 customers pick up “surprise bags” of her leftovers for $5.99 each, and she sends far fewer leftovers to the landfill.

Too Good To Go has tried to gamify (游戏化) buying leftover food. In the United States, customers in 12 cities can browse restaurants and stores, then reserve “surprise bags” that typically cost about $4 to $6 and contain food that would have been originally priced at roughly three times that amount. The bags can be picked up at a certain time window.

Around the country, apps that connect customers to businesses with leftover food have begun to spread. The concept is simple: Restaurants and grocery stores throw away huge amounts of food every day. Rather than trash it, apps like Too Good To Go and Flashfood help businesses sell it at a reduced price. They claim that the businesses and buyers are helping the environment because the food would otherwise become food waste, a big contributor to climate change.

Food production itself is a major contributor to greenhouse gas emissions, accounting for between a quarter and a third of global emissions. Each step of the process — growing, harvesting, moving, processing, packaging, storing and preparing food — releases carbon dioxide, methane(甲烷) and other planet-warming gases. When the food is wasted, so are all those emissions. In addition, once unused food reaches landfills, it breaks down and releases more methane.

According to interviews with several companies selling on Too Good To Go, at least a few items for sale there aren’t necessarily what buyers might think of as “food waste.” A beverage (饮料) company owner George White said he not only used the app to sell discontinued products, but also sold new flavors there in hopes of attracting new customers.

【推荐1】Plastic waste is a huge problem in Indonesia, and this has led the country's second-largest city to come up with a novel approach to encourage residents to recycle—free bus rides in exchange for used plastic bottles and cups. The city of Surabaya launched the initiative back in April—the first Indonesian city to put it into practice, and citizens can ride city buses by either dropping off the plastic bottles and cups at terminals(终点站) or using the plastic items to pay their fare directly.

Under the new recycling initiative, a two-hour bus ticket costs up to five plastic bottles or 10 plastic cups, depending on the size. The city hopes this scheme will help it meet its target of becoming free of plastic waste by 2020.

''Garbage, like plastic bottles, piles up in my neighborhood, so I brought it here, so the environment is not only cleaner but also to help ease the workload of garbage collectors,'' said Linda, a resident of Surabaya.

According to Reuters, data show that 15 percent (nearly 400 tons) of the city's daily waste is plastic. The data also show that one bus can collect up to 550 pounds of plastic each day, totaling about 7.5 tons each month. After collecting the plastic waste, workers remove labels and bottle caps before the plastic is sold to recycling companies. This money then goes toward bus operations and to fund urban green spaces.

【推荐2】Mars on Earth

Devon Island has always been a cold and uninhabited(无人居住的) place in the Canadian Arctic. Day after day there are high winds and the temperature is below freezing. But for the first time, despite the terrible weather conditions, Devon Island is the new home for a group of explorers from NASA. They are living here for a few months in order to train and learn how to live and work on Mars. The group’s members come from various backgrounds and nationalities, but they all have the same purpose: to find out how people can live on Mars in the future.

They have chosen Devon Island because the environment and landscape is similar in many ways to Mars. The surface is freezing cold and the ground is rough. However, there are some differences on Mars, where the atmosphere is poisonous to breathe. Devon Island is easier to travel to and it has its own dangers that you won’t find on Mars. For example, you might meet a hungry polar bear on Devon Island!

One thing the team wants to develop is suitable clothing for Mars. This includes a space suit. The suit they are testing at the moment is strong enough but it’s too difficult to put on and take off. It’s very big and bulky, which means that just walking around is very difficult and tiring. In addition, people will need to do experiments on Mars while wearing the suit so they have to be able to move around easily. One team member, Andy Overbeeke, specializes in space suit engineering. He explains, “You have to think about what they’re really going to operate in.”

Another part of daily life on Mars will be meals and food. Creating a new home on Mars requires a lot of food. So the big question is: can you grow plants in order to survive? Scientists believe that growing plants on Mars might be possible. Mars and Earth have many similarities. They both have about the same amount of dry land and a 24-hour day. However, the atmosphere on Mars is totally different, so Canadian scientist Alain Berinstain is attempting to grow plants in a special greenhouse that you could also build on Mars. The greenhouse needs to run 365 days a year, so it uses a combination of solar energy and wind power.

People living on Mars will also want their own transportation. For this, the team on Devon Island have built the “Martian Rover”. It’s a huge heavy vehicle that can travel over rocks and rough terrain. This kind of testing takes many days but so far the work has been valuable and effective. As a result, the whole team now believes their work is crucial and that it’s possible for humans to land on the planet Mars and create a home there. Addy Overbeeke adds: “We know that it’s man’s destiny to go out and do space exploration. It’s always time to think about what you want to do in the future.”

【推荐3】Physical education, or gym class, isn’t required for all high school students. In some schools, it isn’t offered for some different reasons. But should high school students have physical education? The answer is certainly “yes”.

Today many people don’t do sports. But as is known to all, doing sports is very important for an adult. Teaching teens the importance of a healthy lifestyle and making fitness plans now can help teens put exercise in the first place as an adult.

High school isn’t that easy. Many students are under a lot of stress. Stress can be harmful to a student’s studies and life. Doing sports can help them deal with stress better, helping them live a happier life at school.

The American Heart Association says that 10 million kids and teens suffer from obesity (肥胖症). Teens should get 60 minutes of physical activity per day to control their weight and to help their bones get stronger. However, some activities such as video games and computer activities, don’t get teens to move around. The increase in such activities means that many teens don’t get their required exercise. Physical education classes act as a public health measure to encourage activity and help teens have healthy weights.

Inactivity increases teens’ risk of developing many diseases. An active lifestyle offers a good way of protection from these health problems. As much as 75 percent of health-care spending goes toward treating medical conditions that can be hindered by lifestyle changes, according to the American College of Sports Medicine.

According to the President’s Council on Fitness, Sports and Nutrition (PCFSN), students who performed five hours of physical activity each week improved their academic (学业的) performance. Students from programs with no physical activity, who used the extra time for classroom study, did not perform better on tests than those who gave up some study time in support of physical education.