【推荐3】As people all over the world struggled with higher levels of stress, depression and anxiety this past year, many turned to their favorite comfort foods: ice cream, pizza, hamburgers. But studies in recent years suggest that the high-sugar and high-fat foods when we are stressed or depressed, as comforting as they may seem, are the least likely to be good for our mental (精神上的) health. Instead, whole foods such as vegetables, fruit, fish, eggs, nuts may be a better bet.

Historically, nutrition research has paid much attention to how the foods we eat influence our physical (身体上的) health, rather than our mental health, though. Over the years, large population studies have found that people who are asked to follow a Mediterranean diet for three months had greater reductions in symptoms of depression after three months compared to a control group. Public health professors around the world have started encouraging people to take and use lifestyle behaviors like exercise, sound sleep, a heart-healthy diet and avoiding smoking that may reduce inflammation (发炎) and have advantages for the brain. Individual clinicians (临床医师) are already including nutrition into their work with patients. Dr. Drew Ramsey, a clinical professor at the Columbia University, begins his meetings with new patients by exploring their diet. He asks what they eat, learns their favorite foods, and finds out if foods that he considers important for the connection are missing from their diets, such as plants, seafood.

Dr. Ramsey said he didn’t want people to think that the only factor involved in brain health is food. “Lots of people get their food exactly right, live very active lives, and still have many troubles with their mental health,” he said. But he also teaches people that food can be empowering. “We can’t control our genes,” he said. “But we can control how we eat, and that gives people actionable things that they can do to take care of their brain health on a daily basis.”

【推荐1】On Feb. 15, a new video model called Sora promises to create a video up to a minute long from a short text description. Just tell Sora your idea, and watch it make a video right before your eyes. Sora is described as “eye-popping”, “world-changing”, and “breathtaking, yet scaring.”

The videos from OpenAI’s Sora are full of details. One video of a Tokyo street scene shows that Sora has learned how objects fit together in 3-D: the camera goes into the scene to follow a couple as they walk past a row of shops. Sora knows how things should look in real life.

Sora looks at many videos and learns from them by breaking them into very small bits. It uses these bits to make a new video. The new video is grey at first and very messy. Then, Sora fixes the video until it looks good and smooth. Sora also gets help from ChatGPT, which turns the user’s short sentences into clear instructions. This helps Sora make the video just as you asked.

Sora may find “busy” pictures hard to understand. For example, when a person moves, things around them change. In one video created by Sora, a grandma blows the candle on a birthday cake, but the flame (火焰) doesn’t move. Sora may not be able to tell “left” from “right”.

OpenAI also says that Sora deals with occlusion well. But one problem is that they fail to follow objects when they are out of sight. For example, if a truck passes in front of a street sign, the sign might not reappear afterward.

In a video of a papercraft underwater scene, Sora has added what looks like cuts between different pieces of footage (镜头), and the model has kept the same style between them. But it’s not perfect. In the Tokyo video, cars to the left look smaller than the people walking beside them. They also pop (突然出现) in and out between the trees. “There’s some work to be done,” says Brooks. “For example, if someone goes out of view for a long time, they won’t come back.”

“Sora seems like a very important leap forward,” says Sam Gregory, a human rights organization that specializes in the use and misuse of video technology. “But there are two sides of the coin,” he says. “The meaningful abilities help many more people to be storytellers using video. And there are also possibilities for misuse.”

OpenAI has also realized the risks that come with a video model. The OpenAI team plans to draw on the safety testing. “We’ll need to get more feedback (反馈) and learn more about the types of risks that need to be solved with video before it would make sense for us to put Sora into use,” says Ramesh.

【推荐1】Today, the world is highly competitive. Governments, companies and individuals（个人）are all competing to be the best in the society. It is true that competition leads to better products and services; many people, especially parents, believe that being competitive is helpful for children because it prepares them for the modern world. However, is competition the first thing that our society needs?

Schools teach students to compete for better grades, while in businesses, people are better paid for their competitive performances. However, none of them realizes the adverse effects competition has on the society. For two companies in a competition, one will surely lose then disappear, while the other remains stronger in the market. If this is popular in a country, the number of companies may drop, and then the economy（经济）gets worse. Besides, competition may result in distrust in society.

Cooperation（合作）presents a different picture. Competition breaks relationships, while cooperation strengthens relationships. When we cooperate with others, we meet new people, we get to know new things, we share thoughts, we help each other and we succeed together. Cooperation focuses on the growth and development of everyone, as many people work together toward a common goal. This way, everyone is equally（相同地）developed.

The processes of cooperation have played an important role in shaping the history. Let’s discuss the example of UN（United Nations）.The UN’s calling is to keep world peace and create harmony（和谐）.All nations have cooperated and will keep cooperating with one another to fight for a better future for the whole world.

Sports also provide us with a best example of cooperation. Think about how all members of the team forget who they themselves are and work only for the benefit of the team. Although sports are competitive by nature, when there is cooperation between the members, they encourage and support each other, and they get a greater chance of winning.

The development of both society and individual today depends on not just healthy competition but cooperation. Unfortunately, people are not taught cooperative skills at an early age, and this has encouraged a culture of competition in today’s society. The skills of cooperation should be included in the educational system for children in their early ages. This way, children grow up into adults who value and welcome cooperation, which brings out the best in us.

【推荐3】Men’s tennis has welcomed its new king—Daniil Medvedev. The 26-year-old became the 27th player to reach No.1 in the Association of Tennis Professionals（ATP）rankings（排名）on Feb 28.

Medvedev is the first player outside the Big Four—Novak Diokovic, Roger Federer, Rafael Nadal and Andy Murray—to hold the top spot（位置）in 18 years. At 198 centimeters, he is also the tallest player to ever reach the spot.

“When you are young, you think that it’s impossible, so that’s why you dream about it,” Medvedev said. “When it becomes closer to you, you dream less about it and do more to achieve（达成）it. It’s not even a dream anymore. It’s a goal.”

Medvedev reached the goal with his special playing style—a great combination（结合）of strength and skill. He has the “blink-and-you-missed-it” service（发球）, as the ATP noted.

Reaching the goal was not easy. If he wants to stay there, he may need to work even harder.