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Now 22, Maya has kept that promise. She is the founder of Ocean Guardians, a youth-led organization that organizes beach cleanups and educates people about plastic pollution. What started as a small group of friends cleaning up their local beach has grown into a global movement with over 50,000 members in 40 countries.

One of Ocean Guardians' most successful projects is the "Plastic Free School" program. The organization works with schools to eliminate single-use plastics from cafeterias and classrooms. So far, over 200 schools have joined the program, reducing their plastic waste by an average of 70%.

Maya's biggest achievement, however, came last year when she led a campaign to ban single-use plastics in her home state. She collected over 100,000 signatures and spoke at the state legislature. After months of debate, the ban was passed, making it the strictest plastic ban in the country.

Despite her success, Maya remains humble. "I'm just one person," she says. "The real heroes are the thousands of volunteers who show up every weekend to clean up beaches and the students who are changing their schools. Together, we can make a difference."

Maya's next goal is to expand the Plastic Free School program to 1,000 schools by 2027. She also plans to write a book for children about ocean conservation. "It's important to start educating kids young," she explains. "They are the future of our planet."

The Global Youth Climate Action Summit brings together young leaders from over 100 countries to share innovative solutions to climate change. This year's summit will be held from July 15-18 at the International Convention Center in Geneva, Switzerland.

Registration Details

∙ Early bird registration: $150 (closes May 31)

∙ Regular registration: $200 (June 1-July 1)

∙ Late registration: $250 (July 2-10)

∙ Note: Registration includes access to all sessions, materials, and daily meals. Accommodation is not included.

Featured Workshops

Important Dates

∙ Abstract submission deadline: June 15

∙ Notification of acceptance: June 25

∙ Final program release: July 1

∙ For more information, visit our website: www.gycas2026.org

That oak had a unique4. Her trunk (树干) bent slightly to the east, as if reaching for the morning sun, and her branches spread wide enough to cover the entire yard. Kids in the neighborhood loved climbing her thick limbs; birds built nests in her5, and fireflies danced in her leaves at dusk. She was more than a tree — she was part of our family.

But time took its toll (损失). We watched her6 weaken over the years. The leaves turned yellow earlier each autumn, and some branches dried up and broke off in storms. Even the squirrels (松鼠), who once stored acorns in her bark (树皮), started7. My grandfather sighed, "She's lived a good life, but it's getting8 to have her so close to the house." When a heavy branch crashed onto the fence last winter, we knew we had to call in experts to9 her.

I couldn't bear the thought of her10 completely. Friends11 me to carve her wood into souvenirs — wooden flutes (长笛), photo frames, or even a small bench. At first, I hesitated, but then I12 their suggestion.

Now, instead of looking up at her towering form, I can13 pieces of her in my hands. The photo frame holding my mother's childhood picture is14 to the touch, carrying the warmth of the sun she once soaked up. The wooden flute, when played, hums a soft tune (曲调) that feels like a15 of her rustling leaves. The old oak is gone, but her memory lives on — in our hearts and in the things she's become.

Scientists have long known that having a cheerful personality is good for your health. A positive outlook on life is linked to a healthier heart and longer life. Now, two new studies published this week have found specific healthy behaviors that explain the link.

Previous research has found that people who are optimistic, have a sense of purpose and are satisfied with their lives have a reduced risk of heart disease and stroke. These healthy habits in turn protect their hearts, according to studies involving nearly 5,000 people.

One study looked at how a sense of purpose affects our health. Having a reason to get up in the morning, such as work or caring for a loved one, is known to protect against heart attacks and stroke. The new research found that those with a higher sense of purpose were more likely to have lower levels of cortisol (皮质醇) and fewer inflammation (炎症) signs in their blood.

The second study, of 700 people, showed that optimistic people had significantly lower blood sugar and cholesterol (胆固醇) levels. These are two key risk factors for heart disease. Optimists also tended to be more physically active and less likely to smoke.

"These studies prove that happiness and life satisfaction influence our physical health," said Dr. Julia Boehm from Harvard University. Happier people have lower risk factors for heart disease.

But can miserable people learn to be happy? Experts believe yes. Simple techniques like recording good daily events or performing random kindness can boost happiness. So next time you feel down, remember: looking on the bright side could save your life.

A. Both of them are linked to a higher risk of heart disease.

B. Being unhappy can increase the levels of stress hormones.

C. This is probably because they take better care of themselves.

D. But how happiness protects the heart has long been a mystery.

E. Optimism is a quality that can be developed, not unchangeable.

F. They are more likely to eat well, exercise regularly and sleep better.

G. People with strong purpose seldom suffer from serious heart problems.

Nitrous oxide, largely released from farm fields due to nitrogen fertiliser (肥料) use, is a major climate concern. According to co-author Professor Lars Bakken of the Norwegian University of Life Sciences, the gas is 265 times more effective at warming the atmosphere than carbon dioxide and can remain in the air for over a century.

To develop the solution, researchers grew the bacteria using organic waste. Building on past work, they looked for a microorganism that would reduce nitrous oxide emissions without staying in the soil for so long that it harmed other life forms important for crop health. The bacteria reduced emissions after a second fertiliser treatment by about half two weeks later. After three months, the makeup of microbial (微生物的) life was unchanged, suggesting the bacteria would not harm the soil.

The bacteria, which are not genetically modified, occur naturally in anaerobic digesters — facilities that transform organic waste into biofuels. That might ease acceptance of their use, said Paul Carini of the University of Arizona, who was not involved in the research. Moreover, Bakken stated that this "opens up a number of new possibilities" for managing farmland. The bacteria could be added to fertilisers, offering a potential direct application for farmers. As Carini noted, using a waste product from one industrial process to benefit another is cost-effective.

However, significant challenges remain before widespread use. Professor Lori Hoagland of Purdue University, an expert in the field, noted that soils vary globally, requiring more field testing to ensure effectiveness. More critically, farmers currently get no financial motivation to adopt such methods. Bakken argued that authorities must create policies to make emission reductions profitable. If these limitations can be addressed, this bacterial treatment could have a major impact on reducing agriculture's contribution to climate change.

The first part of the book tells stories of ordinary people who dared to reshape their lives. Graham Keir, a musician, once believed he had "no brain for science" and today walks the halls of medical school. Or Ali, who once struggled with basic maths, only to later master coding (编程) and earn multiple promotions. These are not tales of sudden genius, but of imperfect practice through setbacks and slow progress. Oakley introduces a powerful concept — second-skilling. In today's fast-changing world, relying on just one area of expertise is risky. Developing a second skill can make you more adaptable.

If the first part helps us see what's possible, the second is a guide for making it happen. Oakley draws on interviews with dozens of career changers to show what strategies worked and what pitfalls to avoid. Beyond learning from others, the book's second part offers honest advice for quieting self-doubt and turning learning from a chore into a habit. One of the book's most valuable insights is that what matters is not "intense practice every day", but "practise every day, without fail". Even fifteen minutes daily sends steady signals that quietly reshape your brain.

That said, the book's perspective isn't universal. Rooted in a Western context, it draws largely on stable professionals — leaving quieter questions about those facing real hardship. And while it prioritises practice over passion, some may find this approach cool to the touch.

Yet perhaps that coolness is its strength: it doesn't sell miracles, but offers a solid framework. After reading, you may not have all the answers. But you might ask: "Could what I once thought impossible actually be within reach?"

Ultimately, Mindshift gives something better: a mind open and flexible, ready for change. And that, perhaps, is the truest mindshift of all.

Born in Guangzhou in 2001, Hong came from a family where neither parent had received higher education. She grew up like other kids, and showed no special talent until she started learning Olympiad mathematics in junior high school — this unlocked her potential and surprised everyone.

In high school, Hong was selected into Guangdong Provincial Olympiad Mathematics Team, and in 2018, she entered the Massachusetts Institute of Technology (MIT) with excellent results. She double-majored in Maths and Physics, completed over 20 advanced courses, and served as president of student organisations to help international students. Later, she won the Rhodes Scholarship to study Neuroscience at Oxford, then pursued two doctoral degrees at Stanford while offering legal aid to low-income people.

During this period, Hong focused on the combination of AI and mathematics. Noticing AI's big shortcomings in mathematical reasoning, she founded Axiom Math, whose core idea is to transform English mathematical content from textbooks, papers and journals into programmable knowledge. This allows AI to not only solve complex mathematical problems but also confirm solutions through strict validation (验证). Axiom Math's goal is to develop a real "AI Mathematician" with logical reasoning ability, and Hong even hopes that "AI mathematicians" will put forward brand-new mathematical conjectures (猜想) in the future. With her good academic reputation and clear technical goals, she attracted many top talents to Axiom Math. A famous mathematician even left his permanent teaching position to join the team, and they worked together to build a strict logical reasoning training system by adopting a new model.

Carina Hong's story is one of vision and commitment. Built on solid academic training and driven by a clear goal — to give AI true mathematical reasoning ability — she is leading Axiom Math toward a future where machines and mathematicians work side by side

1. 节日简介；2. 风俗习惯；3. 你的希望。

注意：（1）词数100左右；（2）可以适当增加细节，以使行文连贯。

开头和结尾已给出，不计入总词数。

Boys and Girls, Good morning!

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Edinburgh Castle stands on top of an ancient volcano, watching over the city of Edinburgh for centuries. As one of the most famous (building) in Europe, it offers a unique chat with the past. Visitors can access (it) rich history through guided tours and online resources.

The earliest data about the castle dates back to the 12th century. Over the years, it (serve) as a royal home, a military base, and a prison. Many battles took place here, and the walls have confirmed both victory and loss. Today, the castle is symbol of Scottish culture and a collection of stories (wait) to be explored.

Inside, the Great Hall still functions a place where events are held. Through interactive displays, visitors can connect with the past in a (person) way. One of the most popular sights is the Stone of Destiny, an ancient item connected to Scotland's kings.

Every year, the castle becomes the heart of the Royal Edinburgh Military Tattoo, a festival of music and dance. People from around the world join the (celebrate), enjoying the atmosphere and traditional performances. The custom of gathering here has continued for generations.

Whether you experience it in person stream a performance online, Edinburgh Castle offers a journey into a world of history and tradition. It reminds us that by understanding the past, we can better understand who we are. For many, the visit is not just a tour but a chance to value the traditions shape our identity.

After a fun night out with friends, Daisy couldn't find her wallet. She did everything she could think of and finally5, thinking someone had likely found it and stolen its6. Actually she would be blessed (赐福) by Paul's7!

Paul spent two days searching for Daisy when he ran into one of Daisy's friends. The friend8 messaged Daisy. "I am so happy and9 him. He is now living: in a hostel (临时收容所), yet took no money out of it," said Daisy. But then she read the10 Paul put in the wallet about wanting to do the right thing. All of a sudden Daisy knew what she11 to do in return. She started a Go-Fund-Me page explaining that Paul found her lost wallet and his current12 situation. She was determined to put a roof over his head. She was hoping to13 $1,500. To her great surprise, she received over $5,000 to help Paul get a(n)14.

It's easy to imagine the worst of people. But each one of us can make a difference, just like Paul did, by displaying15 in us.

Nowadays most people have bad eyesight. Don't take your eves for granted. Here are some tips on protecting your eyesight.

Eat for good vision.

Protecting your eyes starts with the food on your plate. Nutrients such as vitamin C and vitamin E may help avoid vision problems. You can choose green vegetables, eggs, beans and other non-meat protein sources.

Wear sunglasses for good vision.

Choose sunglasses that block 99% to 100% of both UVA and UVB rays. If you wear contact lenses, choose the ones that offer UV protection. It's still a good idea to wear sunglasses for more protection.

Quit smoking.

Smoking makes you more likely to get cataracts, optic nerve damage, and macular degeneration (黄斑退化). If you have tried to quit smoking before and started smoking again, keep trying. The more times you try to quit smoking, the more likely you are to succeed.

Staring at a computer screen can cause so many problems: dry eyes, headaches and neck, back and shoulder pain. To protect your eyes, you can position your computer so that your eyes are level with the top of the monitor. This allows you to look slightly down at the screen. Try to avoid glare on your computer from windows and lights. Use an anti-glare screen if needed. Every 20 minutes, rest your eyes by looking 20 feet away for 20 seconds.

Visit your eye doctor regularly.

Everyone, even young children, should get their eyes examined regularly. They can also find some eye diseases, such as glaucoma (青光眼). The earlier diseases are found, the easier they are to be treated.

A. Eye exams help you protect your sight and see your best.

B. Look away from the computer for good eye health.

C. Use safe sunglasses.

D. At least every two hours, get up and take a 15-minute break.

E. Wear glasses when examined under the guidance of your doctor.

F. Regularly eating nutritious foods can lead to good eye health.

G. It will cause your eyesight to fail.

Known as autonomous cars, they can make going anywhere much more convenient. The adults often spend more than 300 hours behind the wheel each year. Self-driving cars could give them that time back.

In addition, autonomous cars may possibly transform what a car is and how it works. Think about it. With no need for a driver, does there need a driver's seat or a steering wheel? Self-driving cars could have sofas, beds or even an entire kitchen. Passengers could sit and talk with one another face to face or go to sleep at the start of a drive and wake up in a new place. The inside of a car could also be an office, hair salon, or personal gym. Suddenly, cars are much more than just a way to get from one place to another.

But a future of cars driving themselves around city streets with no one inside is still years away. That's because the technology behind autonomous vehicles is still imperfect. The cameras and other systems that self-driving cars use to guide themselves have trouble "seeing" the road in bad weather or heavy traffic. They also have difficulty dealing with different kinds of roads. The road signs, and turns of a highway are very different from those of a neighborhood road. So, at least for a while, there will still need to be a human driver ready to take the wheel in self-driving cars.