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The researchers used some clever techniques to analyze van Gogh's brushstrokes. They treated the varying brightness of the paint colors as a stand-in for the energy of physical movement in the atmosphere. What they found was astonishing. The patterns in The Starry Night correspond to two important principles in fluid dynamics: Kolmogorov's law and Batchelor's scaling. Don't worry if these terms sound abstruse — let's break them down.

Kolmogorov's law describes how energy moves from larger to smaller scales in turbulent flows. Imagine a big swirl breaking down into smaller and smaller ones. This is what happens in the atmosphere, oceans… and amazingly, it's what van Gogh's work seems to represent. Batchelor's scaling, on the other hand, deals with how small-scale turbulence behaves. The researchers found that the fine details in van Gogh's brushstrokes match this principle, which describes how substances like heat or pollutants spread in a turbulent fluid.

Finding both of these patterns in one system is rare, which makes this discovery even more exciting. "It reveals a deep and intuitive understanding of natural phenomena. Van Gogh's precise representation of turbulence might be from studying the movement of clouds and the atmosphere or an inborn sense of how to capture the dynamism of the sky," says Yongxiang Huang, the study's lead author. The fact that an artist in the 19th century could capture these complex dynamics so accurately is mind-blowing. This research opens up exciting possibilities for the intersection of art and science. It shows that beauty and scientific accuracy aren't mutually exclusive — they might be more closely linked than we realize.

So, the next time you look at The Starry Night, remember that you're not just seeing a beautiful painting. You're witnessing a snapshot of the swirling, turbulent dance of the atmosphere.

To gain a better understanding of skin's properties, Guy German and his colleagues hired a group of volunteers ranging in age between 16 and 91. They then used a low-force device to stretch small tissue samples of their skin to simulate everyday forces applied to the body's largest organ. The results clearly showed that as skin stretches one way, it also contracts (收缩) in the other direction. These contractions grow larger with age, forming wrinkles in the process.

German compared the dynamics to a popular, flexible children's toy. "If you stretch SillyPutty, for instance, it stretches horizontally, but it also shrinks in the other direction — it gets thinner. That's what skin does as well," he said. "As you get older, that contraction gets bigger. And if your skin is contracted too much, it folds. That's how wrinkles form." There is a bit more to it than just Silly Putty. According to German, your skin's mechanical properties get somewhat "unstable" as you age and "things degrade a bit".

So people with more physically active careers such as construction workers are likely to have more aged, wrinkled skin than office employees. But German stressed although different careers may lead to different skin conditions, taking proper skin-care measures is crucial for everyone.

While mechanical stress may be the biggest influence on how wrinkles initially develop, protection against major issues like sun damage and hormonal (激素的) imbalances will keep your skin healthy. Even if your skin is smooth, it doesn't mean it is immune to UV radiation. So be sure to continue applying suncream to yourself. Wrinkled or not, your body will be better off for it.

I learned that he was a recent West African immigrant with a few young children, working hard to provide for his family. I could relate: I am the daughter of two Ethiopian immigrants who made their share of sacrifices to ensure my success. I told him I was on a college break and headed home to visit my parents. That's how he found out I go to Harvard. An approving eye glinted at me in the rearview window (后视镜), and quickly, we crossed the boundaries of rider and driver. I became his daughter, all grown up — the product of his sacrifice.

And then came the fateful question: "What do you study?" I answered "history and literature" and the pride in his voice faded, as I knew it might. I didn't even get to add "and African-American studies" before he cut in, his voice thick with disappointment, "All that work to get into Harvard, and you study history?"

Here I was, his daughter, squandering the biggest opportunity of her life. He went on to deliver the age-old lecture that all immigrant kids know. We are to become doctors (or lawyers, if our parents are being generous) — to make money and send money back home. The unspoken demand, made across generations which my Uber driver laid out plainly, is simple: Fulfill your role in the narrative of upward mobility so your children can do the same.

I used to feel anxious and backed into a corner by the questioning, but now as a junior in college, I'm grateful for their support more than anything. This holiday season, I've promised myself I won't huff and get annoyed at their inquiries. I won't defensively respond with "but I plan to go to law school" when I get unrequested advice. I'll just smile and nod, and enjoy the warmth of the occasion.

Use the Healthy Eating Plate as a guide for creating healthy, balanced meals-whether served at the table or packed in a lunch box.

Building a Healthy and Balanced Diet

The Healthy Eating Plate presents a simple visual guide to building a healthy meal. By showing different food groups on one plate, it stresses balance, choice, and everyday eating habits.

These guidelines highlight what matters most in healthy eating:

• The type of carbohydrate (碳水化合物) in the diet is more important than the amount of carbohydrate, because some sources — like vegetables (other than potatoes), fruits, whole grains, and beans — are healthier than others.

• It advises consumers to avoid sugary drinks, a major source of calories — usually with little nutritional value — in the American diet.

• It encourages consumers to use healthy oils, and it does not set a maximum on the percentage of calories people should get each day from healthy sources of fat. In this way, the Healthy Eating Plate recommends the opposite of the low-fat message promoted for decades by the United States Department of Agriculture (USDA).

Your Plate and the Planet

Just as different foods can have different impacts on human health, they also have different impacts on the environment. Food production is a major contributor to greenhouse gas emissions (排放), and it places an enormous demand upon our earth's natural resources.

（1）互评过程；

（2）个人体会。

注意：

（1）写作词数应为80个左右；

（2）请按如下格式在答题纸的相应位置作答。

Dear Chris,

How's everything? I'm writing to tell you about a new approach we're trying in English class — peer review!

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Yours,

Li Hua

November 5, 2025, Beijing — The 43rd session of the UNESCO General Conference (pass) a resolution (决议) to name March 21 International Taijiquan Day. The (establish) of the Taijiquan Day is an important decision, recognizing how Taijiquan significantly contributes to global health, cultural exchange, and even world peace.

Rooted in yin-yang balance, Taijiquan combines elements of traditional medicine, martial arts, and philosophical thought. Over several centuries, it (develop) into several major styles, such as Chen, Yang, Wu, Wu (Hao), and Sun, and is now practised by (million) of people around the world. In 2020, Taijiquan was added to UNESCO's intangible cultural heritage list.

The (choose) date March 21 is the vernal equinox, a day day and night are of equal length. This perfectly matches core idea of Taijiquan: harmony between humans and nature. Studies also find that (practise) Taijiquan is good for both physical and mental health in the long run. Therefore, it is (increasing) becoming part of global public health practices. its wide popularity, Taijiquan continues to promote peace and cross-cultural dialogue across the globe.

One day, high in the clouds, I hiked from camp to a plain to observe Tibetan antelopes, habitats had shrunk as roads and railways expanded. Watching them move slowly across the green grass, I was stricken not only by their beauty but also by the urgent need (protect) them.

The antelope population dropped by over 50% because they were hunted (legally) for their fur in the late 20th century. To save the species from extinction, the government placed it protection. Volunteers like Zhaxi, who believes that protecting wildlife means saving (we), kept watch day and night. Besides, bridges and gates (build) to enable their safe passage and protect them from traffic.

Thanks to these (effect) measures, the antelope population has since recovered, leading to its (remove) from the endangered list in 2015. Nevertheless, protection continues, as threats have not completely disappeared.

(reflect) on Zhaxi's words under a starlit sky, I realized that only when we learn to exist in harmony with nature can we stop being threat to wildlife and our planet.

On the big day of the show, looking from the2, she noticed a microphone on the stage ready for her solo—a3 she hadn't expected as their teacher had never taught its use.

Despite the uncertainty, Vaughan walked to the microphone when her teacher signaled her to go up in front of the stage. She started well, singing4. But on the last high note, with her5 too close to the microphone, the sound6 from the speakers, deafeningly loud. "Everyone jumped back7, jaws dropping wide open. I wanted to make a quick8!" she recalled.

The concert ended with half the school day left, so Vaughan had to return to her9. Walking along the hallway, head10, she came across a senior. She looked up, holding her breath for11 words. Instead, he smiled and said, "You have a very12 voice".

Over 40 years later, she still remembers those words. "They took me from13 singing to realizing I might actually have the power he heard," she said.14, Vaughan studied music and became a professional singer-songwriter. Sometimes, just a few words at the right moment can truly15 the path of someone's life.

First and foremost, beginning again builds your resilience (韧性). When you're a beginner, you make lots of mistakes. This can be frustrating, but each time you rise, retry, and advance slightly, you build resilience to meet challenges.

As an adult, you might get used to being the "expert" or the one who knows the answers. But stepping into a beginner's role can change this situation. Being a beginner forces you to accept that you don't know everything, which reminds you that learning is a continuous journey and that everyone, no matter their age or experience, can learn from others.

Moreover, starting as a beginner also sparks creativity. When learning something new, you often come across new problems and have to find different ways to solve them. This process of trying, failing, and trying again from different angles stimulates your brain, enhancing your problem-solving skills.

Finally, remember the feeling when you first successfully understood a complex idea in a new language? It boosts your confidence and reminds you of your own potential.

So the next time you feel a little uncomfortable about being a beginner, remember that it's not a sign of weakness, but an opportunity for growth. Embrace the awkwardness of being a beginner. You might discover a brand new version of yourself.

A. In doing so, it teaches you to think outside the box.

B. You might hit the wrong notes, or trip over your own feet.

C. Yet, what if this very discomfort holds hidden advantages?

D. You have to ask questions, listen to others, and accept help.

E. Additionally, being a beginner encourages open-mindedness.

F. This newly-learned language also introduces you to a new culture.

G. That feeling of achieving something new is extremely worthwhile.

This learning, called "subliminal learning" (隐性学习), is described in a paper on arXiv.org. The paper details an amazing study: First, researchers fine-tuned a teacher AI to prefer owls and had it solve number tasks. Then, they trained a student AI only on those tasks — never mentioning owls. Surprisingly, when later asked its favorite animal, the student AI also said "owl". In a more serious second test, student AIs trained on data from "biased" teacher AIs were more likely to give dangerous responses — even after the researchers removed numbers with known negative meanings, like 911.

Co-author Alex Cloud explains when student models are trained to be like a teacher in one way, they tend to become similar in others. He compares the basic AI model to a huge web of interconnected concepts: if one connection is adjusted to match the teacher's, others are inevitably pulled closer too. However, this effect occurred only when the AI models were very similar, suggesting such "subliminal learning" is a basic feature of neural networks.

AI expert Merve Hickok doubts the findings might result from incomplete data cleaning — that is, the researchers might not have removed all the unwanted information from the training data. The researchers admit this is possible but argue the learning effect still appears even when such clues are blocked. Cloud adds that AIs themselves can't reliably tell which data points link to certain preferences.

Cloud stresses that this isn't meant to alarm the public, but clearly reminds us how little we understand AI's inner workings. The training process is more like "growing" a system than "designing" it — a system that cannot promise how it will act in new situations, or that it will be safe.

Actually, a road diet is a redesign of a roadway that reduces the number of car lanes (车道). Typically, this means changing a four-lane road into three lanes — two for through traffic and one center lane for shared left turns. The space saved is then repurposed for other uses, such as bike lanes, wider sidewalks, bus-only lanes or green space.

The idea isn't new. The first road diet in the United States was introduced in 1979 in Billings, Montana. Since then, more cities have all adopted the model. But it's not just a design fashion — road diets are backed by powerful data and safety results. Consider the case of Ocean Park Boulevard in Santa Monica. After being changed from four lanes to three, with the addition of bike lanes, the city saw a 65% reduction in crashes and no major increase in traffic on nearby streets.

There's another bonus: a reduced carbon footprint. By reusing road space for cars and encouraging walking and biking, road diets reduce overall Vehicle Miles Traveled (车辆行驶里程). This directly cuts greenhouse gas output, helping cities meet their climate targets.

Despite the successes, road diets often face pushback. Residents worry about longer travel times, emergency vehicle delays, or reduced access to local businesses. But if we plan with data and work with the locals, many of these concerns can be solved. In fact, safer streets often support local businesses by attracting more foot traffic and cyclists. Emergency response times can remain unchanged if planners work with local services to ensure backup paths.

The road diet isn't about punishing drivers. It's about creating streets that work better for all — parents with strollers, teenagers on bikes, seniors walking to the store. It's not just about losing a lane, but about gaining a better future for city mobility.

Jalil is one of about 10 million Bangladeshis living on chars — moving islands formed from river mud. Climate change leads to extreme rainfall. This rainfall constantly wears away and reshapes the lands, making fixed hospitals impossible to establish. As a result, daily survival becomes a struggle for the residents — mostly poor farmers.

In response, the non-governmental organization FRIENDSHIP operates floating hospital ships that bring free medical care directly to the chars. Founded by Runa Khan, the project uses a three-level system: hospital ships provide operations and advanced care; mobile medical teams visit islands for check-ups; and local women are trained as community health workers to spread awareness and provide basic medicines. "You cannot have the same healthcare system in cities and these unreachable areas. You must adapt it to local realities," Khan explained.

It has been nearly two decades since Khan changed a donated oil tanker into the first floating hospital, but she still remembered how almost everyone around her at first thought the idea would fail. "I was told it's impossible, but I knew a normal hospital wouldn't help," she said. Today, the approach has been widely praised as a new model that could guide other nations facing climate threats.

Nevertheless, a lack of awareness on the chars hampers their efforts. "Many don't realize that simple operations could end their isolation," said a staff member. This unwillingness was clear in the case of 8-year-old Shariful, who broke his hand. And his father, fearing his son might lose the arm, hesitated for days before finally trusting the doctors. After a successful operation, his father reflected, "I realized the doctors were making sense. My son is much better now."