3 . On February 13, 2023, Wu Yibing made history, beating John Isner in a thrilling three-set final at the Dallas Open to become the first man from China to win an ATP title（ATP巡回赛冠军）.

Brought to a tennis court for the first time at just five, initially encouraged by his parents as an exercise to lose weight, Wu soon had his talent discovered by his provincial junior team, kicking off a journey that would change the fate of men's tennis in China. In 2017,Wu Yibing shot to prominence after winning the US Open boys’ tournament at 18 to become the first Chinese to win a major junior title, raising high hopes for the “Wonder Boy” to change the fortune of Chinese men in a sport long dominated by women's success on the professional stage.

In 2018, Wu won his first ATP Challenger title in Shanghai. However, the highly competitive nature of men’s professional tennis hit the rising Wu with a tough reminder after multiple injuries-to his elbow, lower back, shoulder and wrist-forced him to be away from the ATP Tour for close to three years.

He made his return last year and won three ATP Challenger titles before qualifying for the US Open. “Looking back, I feel like I wouldn't have been here if not for the ups and downs over the past few years. I take all the setbacks and struggles as a lesson that helps me mature mentally now,” said Wu.   “Of course there were a lot of doubts because I had surgery and the recovery wasn’t going well. The championship today was a payoff for all the hard work and everyone who’s supported me along the way.”

4 . 4 STEM Competitions for High Schoolers

eCyberMission

You can participate(参加) in this competition without leaving the house. eCyberMission is   a web-based contest in which participants—working in teams of two to four students—use science, math, and technology to solve problems facing their communities. First-place winners receive $1,000.

Grades: 9th

Competition Type: Regional, state, and national

Toshiba/NSTA ExploraVision

Interested in what the future has to hold? Consider ExploraVision’s STEM competition. Working in teams of two to four, students will research a particular technology and discuss the ways in which it may impact lives moving forward. Participants are required to write a paper and draw web pages communicating their vision.

Grades: 7th- 9th and 10th- 12th

Competition Type: Regional and national

Spellman Clean Tech Competition

The Spellman Clean Tech Competition tests students’ ability to research and design—it requires participants to recognise a real-world issue, research the problem, and design a solution that uses clean technology. Participants gain a better understanding of STEM fields and may help make the earth a healthier place. In addition to the honor of winning a well-known STEM competition, there are some awards for top finishers—including a $7,000 first prize.

Grades: 9th- 12th

Competition Type: International

Regeneron Science Talent Search (STS)

The most promising young scientists in the nation compete in the Regeneron STS—one of the country’s oldest and most famous STEM competitions. The competition is open to high school seniors and challenges them to carry out an independent research project and submit(提交) their findings along with a paper and up to four recommendations(推荐信). Winners can take home awards of up to $250,000!

Grades: 12th

Competition Type: National

5 . The benefits of regular exercise are well documented but there’s a new bonus to add to the ever-growing list. New researchers found that middle-aged women who were physically fit could be nearly 90 percent less likely to develop dementia in later life, and as they did, it came on a decade later than less sporty women.

Lead researcher Dr. Helena Horder, of the University of Gothenburg in Sweden, said : "These findings are exciting because it’s possible that improving people's cardiovascular （心血管的）fitness in middle age could delay or even prevent them from developing dementia. "

For the study, 191 women with an average age of 50 took a bicycle exercise test until they were exhausted to measure their peak （最大值的） cardiovascular capacity. The average peak workload was measured at 103 watts.

A total of 40 women met the criteria for a high fitness level, or 120 watts or higher. A total of 92 women were in the medium fitness category; and 59 women were in the low fitness category, defined as a peak workload of 80 watts or less, or having their exercise tests stopped because of high blood pressure, chest pain or other cardiovascular problems.

These women were then tested for dementia six times over the following four decades. During that time, 44 of the women developed dementia. Five percent of the highly fit women developed dementia, compared to 25 percent of the women with medium fitness and 32 percent of the women with low fitness.

"However, this study does not show cause and effect between cardiovascular fitness and dementia, it only shows an association. More research is needed to see if improved fitness could have a positive effect on the risk of dementia and also to look at when during a lifetime a high fitness level is most important. " She also admitted that a relatively small number of women were studied, all of whom were form Sweden, so the results might not be applicable to other groups.