【推荐2】The Importance of Getting Kids to Be Active

Everyone knows that kids should be physically active and need to exercise regularly to be physically fit.     1    , regular physical activity is considered by most experts to be an important part of a healthy lifestyle. However, that doesn’t mean every child needs to spend four or five hours a day exercising.

How Much Exercise Do Kids Need?

It is recommended that kids should be physically active for at least 60 minutes per day.     2    . For example, if your eight-year-old played soccer for 20 minutes during PE at school and then played basketball with his friends for 40 minutes after school, he would meet the recommendation of 60 minutes of physical activity for that day.

Exercise and Calories

    3    . It can help them build self-respect, sleep better, have more energy, and reduce depression. And as most people know, along with a healthy diet, regular exercise is the best way to lose weight and prevent childhood obesity (肥胖). Since your child is not likely to get his exercise using exercise equipment, it can be hard to always tell how many calories he is burning while exercising.     4    , as long as your child is getting his 60 minutes or more of physical activity each day and maintaining a healthy diet.

Youth Exercise and Fitness

Remember that kids, even teens, don’t usually stick with exercise programs.     5    . Instead, kids do better with lifestyle exercise programs, such as active free play and organized team sports.

【推荐1】A lot of health care are connected with being around trees.     1     According to one 2015 study, a walk in the woods can make you feel seven years younger.

They also do a great deal of good for the environment by reducing air pollution and taking in carbon dioxide from the atmosphere.     2     A new study by researchers at University College London found that the trees in the London Borough (自治市) of Camden store as much carbon per hectare (公顷) as rainforests.

A tree’s ability to take in carbon dioxide is especially useful when the tree.is in cities or towns, where there are too many industrial activities. For the study, the researchers used laser scanning methods to take their own carbon readings of trees from the ground as well as the air.     3     They were able to know there are about 85,000 trees in Camden, where the university is based.

They determined that Camden had a median carton density (浓度) of around 55 tons of carbon per hectare (t/ha). Greener areas of the borough, like Highgate Cemetery, had a carbon density of 380 t/ha — levels that are typically seen in rainforests.     4    

So what exactly does this mean? Trees could help cool the atmosphere by removing carbon dioxide from the air. However, some climate scientists argue that it’s more complicated (复杂的) than that.     5     Still, with all of the other benefits trees offer, planting a seed or two couldn’t hurt.

【推荐2】The increased use of light-emitting diodes (LED) and other forms of lighting are now brightening the night sky at a dramatic rate. Research has revealed that light pollution is now causing the night sky to brighten at a rate of around 10% a year, an increase that threatens to ruin the sight of all but the most brilliant stars in a generation. A child born where 250 stars are visible at night today would only be able to see about 100 by the time they reach 18.

Physicist Christopher Kyba, of the German Centre for Geosciences told the Observer. “A couple of generations ago, people would have regularly encountered this glittering (闪耀) vision of the universe—but what was formerly universal is now extremely rare.” Nevertheless, the introduction of only a modest number of changes to lighting could make a considerable improvement, Kyba argued. These moves would include ensuring outdoor lights are carefully capped, point downwards, have limits placed on their brightness, and are not predominantly blue-white but have red and orange components.

The problem is that light pollution is still not perceived by the public to be a threat. As Professor Oscar Corcho, of Universidad Politécnica de Madrid, has put it: “The negative consequences of light pollution are as unknown by the population as those of smoking in the 80s.”

Yet action is now urgently needed. Apart from its astronomical impact, light pollution is harming human health. “When reddish light shines on our bodies, it stimulates mechanisms including those that break down high levels of sugar in the blood. Since the introduction of LEDs, that part of the spectrum (光谱) has been removed from artificial light and it is playing a part in the waves of obesity (肥胖) and rises in diabetes cases we see today,” said Prof Fosbury from University College London (UCL),

UCL researchers are preparing to install additional infrared (红外线) lamps in hospitals and intensive care units (ICU) to see if they have an effect on the recovery of patients who would otherwise be starved of light from this part of the spectrum.

【推荐2】Born in an unknown village in Huarong county, Hunan province, Yi had few opportunities to play instruments when he was young.

At the age of 6, when most performers have already begun studying the piano at music academies, Yi learned the traditional stringed instrument the erhu from a group of people lodging at his home. It was not until much later that he first saw a piano when he visited his cousin’s house in Huarong.

“My family was too poor to buy a piano for me, so I often used to visit my cousin, even though it took about an hour to travel the 20 kilometers to his home over rocky roads just for the opportunity to sit at the keyboard,” Yi said.

Yi first arrived in Shenzhen 19 years ago and worked in factories, on construction sites and in kitchens. He had not played a piano for nearly 30 years.

The public pianos in Huaqiangbei offered him a fresh start. On a hot summer’s day, while   taking a break from work at a nearby construction site, Yi and his son passed one of the instruments. Encouraged by his son, Yi decided to give it a try.

He rubbed his hands nervously on his clothes, but the moment he placed his fingers on the keys, he felt more comfortable and his confidence returned. Although his masterly performance at the piano keyboard quickly made him an online sensation in China and overseas, Yi is not the only one to benefit from the pianos in Huaqiangbei.

Inspired by the British artist Luke Jerram, who has placed more than 2,000 street pianos in over 70 cities worldwide since 2008 with the words “Play Me, I’m Yours” printed on their sides, the public piano project in Huaqiangbei was launched by the local government in 2018.

Zhang Chen, deputy director of the Huaqiangbei subdistrict office, said: “Huaqiangbei is located in the commercial district in the center of Shenzhen. We have been trying to provide diverse facilities to bring high-quality public cultural services to the area. We are surprised that the public piano project has attracted so many people to play the instruments, and others to watch them perform.”