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Humans have sailed the oceans' surfaces for millennia, but their depths remain effectively uncharted. Only about a quarter of the seafloor has been mapped at high resolution. Maps of most regions display only approximate depths and often miss entire underwater mountains or canyons(峡谷).

So researchers have introduced some deep-diving experts: Elephant Seals. Scientists have been placing trackers on them around Antarctica for years, gathering data on ocean temperature. For a new study, the researchers compared these dives' location and depth data with some of the less detailed seafloor maps. They spotted places where the seals dove deeper than should have been possible according to the maps meaning the existing depth estimates were inaccurate.

In eastern Antarctica's Vincennes Bay, the diving seals helped the scientists find a large, hidden underwater canyon of more than a mile in depth. An Australian research ship called the RSV Nuyina later measured the canyon's exact depth using sonar (纳),and the researchers have proposed naming their find the Mirounga-Nuyina Canyon —honoring both the ship and the involved Elephant Seals, genus Mirounga.

But seals can't chart the entire ocean floor. The trackers used in the study could pinpoint a seal's geographical location only within about 1.5 miles, which allows for useful but not exactly high-resolution data. Plus, because the seals don't always dive to the bottom of the ocean, they can reveal only where the bottom is deeper than in existing maps- not shallower. Deep-sea research experts suggest improving on these data by using more precise GPS trackers and analyzing the seals' diving patterns to determine whether they have reached the seafloor or simply stopped going down.

The potential use of the current seal-dive data is to gather information about the deep ocean around Antarctica, specifically regarding the location and depth of sea-floor canyons. This data can be valuable for predicting how Antarctica's ice will melt. By understanding the presence and characteristics of these canyons, scientists can better assess how warmer water from the deep ocean flows towards the ice along the continent's coast, This knowledge is crucial for accurately modeling and predicting the future behavior of Antarctica's ice sheets and their contribution to sea-level rise.

Scientists have found a way to decode (解码) a stream of words in the brain using MRI scans and artificial intelligence. The system reconstructs the main point of what a person hears or imagines, rather than trying to copy each word, a team reports. "It's getting at the ideas behind the words, the meaning, says Alexander Huth, an author of the study.

Previous efforts to decode language have relied on sensors placed directly on the surface of the brain. The sensors detect signals in areas involved in expressing words. But the Texas team's approach is an attempt to "decode more freeform thought," says Marcel Just, a professor of psychology at Carnegie Mellon University.

The new study came about as part of an effort to understand how the brain processes language. Researchers had three people spend up to 16 hours each in a functional MRI scanner, which detects signs of activity across the brain. Participants wore headphones that streamed audio from the Internet. Those streams of words produced activity all over the brain, not just in areas associated with speech and language. After participants listened to hours of stories in the scanner, the MRI data was sent to a computer. It learned to match specific patterns of brain activity with certain streams of words. Then came a paraphrased version of what a participant heard. 

The MRI approach is currently slower and less accurate than an experimental communication system being developed for paralyzed people, where people get a sheet of electrical sensors implanted directly on the surface of the brain. With an MRI-based system, no one has to get surgery. 

But future versions of MRI scans could raise moral questions. "What if you can read out the word that somebody is just thinking in their head? That's potentially a harmful thing." Huth says. This technology can't really read minds uncontrollably, though. It only works when a participant is actively cooperating with scientists. Still, systems that decode language could someday support people who are unable to speak because of a brain injury or disease. They are also assisting scientists in understanding how the brain processes words and thoughts.

Sugar, protein and fat: if you're good at scanning those nutrition facts on food and drinks packages, it's thanks in large part to Burkey Belser, who is a well-known American graphic designer(平面设计师). But his work extended far beyond groceries. If you've noticed the Drug Facts box on over-the-counter medicines seems to be like the food label, that's because Belser designed it, as well. He also created the yellow Energy Guide box for home appliances.

Belser's passion for design started at a young age. He studied at the School of the Art Institute of Chicago and began a journey to become a graphic designer. His exceptional talent and skill quickly gained recognition, earning him numerous awards and accolades.

Belser's work is seen on billions of products. The nutrition fact box has been copied around the world. Creating the official food information box was a complicated process, with input from business groups and health advocates, along with Food and Drug Administration( FDA) experts. The design team worked through 35 versions before the product came out, and it was a huge success. " That is a masterpiece of information architecture, and quite a victory for social responsibility, " commented one Italian designer.

The nutrition label reflects Americans' evolving (演变) relationship with food shifting from an emphasis on vitamins and minerals to addressing obesity (肥胖) and related conditions. Belser's work not only made an impact within the industry but also played a crucial role in effectively communicating important messages to the public.

Speaking of his success, Belser said that luck had probably played a big role. But he added, " I'd say the willingness to work hard sets the stage to take advantage of whatever luck comes your way."

For high schoolers, a career goal can help them choose a major and college. They may find a career that fits for the first try. Therefore, do encourage the career exploration below. It describes a few new ones that will be available when your teen reaches adulthood. 

Next-generation psychological help

Unfortunately, psychological health issues are unlikely to decrease soon. The existing research is far from a cure-all. Psychological help will likely be an ever more interesting and in-demand profession. 

Intermediate health care provider

The U. S. is facing an overburdened health care system. So, an ever-higher percentage of health care will be provided by intermediate-care providers such as physician assistant, dental assistant, etc. The good news for career-seekers is that the training is much shorter. 

Software developers and engineers

Experts in database architecture, artificial intelligence, and machine learning will stay in demand. New applications may include AI-assisted diagnosis (诊断) and treatment recommendations, individualized education, and advanced embryo (胚胎) selection to ensure absence of genetically influenced diseases and so on. 

Precision medicine

In your teen's lifetime, major diseases will likely be prevented and/or treated with molecules custom-matched (定制) to the very specific disease. Your math-centric teen who can picture getting a PhD could help make that happen.

Tips

It's great when teens are able to explore careers on their own. You might want to sit alongside, but let your teen sit in the driver's seat. Only help as much as needed.

注意：1. 词数100左右；2. 可以适当增加细节，以使行文连贯。

UN Chinese Language Day is observed annually on April 20, celebrating the language's contribution to the world and (encourage) more people to learn it.

April 20 marks the Guyu, Grain Rain in Chinese. The Guyu is the (six) of the 24 solar terms in the traditional lunar calendar, the day when farmers start sowing. Each year they will celebrate Guyu in memory of the person: Cang Jie, was believed to create Chinese characters.

Chinese (allow) to be an official language of the United Nations in 1946. However, in the early years, Chinese was not (common) used in the work of the United Nations. The situation improved the restoration (恢复) of the lawful rights of the PRC in the United Nations in 1971. And in 1973, the General Assembly (联合国大会) included Chinese as working language. Then more and more UN offices and work members work with the Chinese language.

This year's celebrations included lectures on Chinese culture, film screenings, panel discussions on education and art (exhibition). The event also provided an opportunity (practise) Chinese calligraphy, draw in the Chinese style, and play classical Chinese musical instruments.

Today, more and more diplomats and UN staff (learn) Chinese and familiarizing themselves with the Chinese culture.

I had suddenly run out of oil paints just when I needed them. So I made a long 1 to the only store around here that sells them. It was the 2 time to shop. The store was full of people and the checkout line was long. I could see the 3 faces of ton the face of the people around me. It was no better in the 4 and I found myself in the middle of a longline of cars waiting to pull out of it.

As my car was moving forward, I 5 a middle-aged, thin black woman in an old coat. She was holding up a piece of paper that said, " 6 my job. Kids to feed!" I 7 as car after car drove past her while their drivers turned their eyes away. 8 I came closer, I took out my 9 and pulled out the little cash I had left. I 10 next to her, rolled down(摇下) my window, and 11 put it in her hand. She 12 and said "Thank you" before the car behind me 13 me to drive on.

I drove away and 14 that I had helped her even a little. Was my small act of kindness 15 to her? I don't know. Did it change the attitude of the driver behind me? Probably not. But it has been a wonderful experience for me.

By now, most people know they should be eating more vegetables. But are there ways to get more from the vegetables you already eat? A research shows that when it comes to vegetables, it's not only how much we eat, but also how we eat them. It is important because it decides the vitamins (维他命) and other nutrients (营养物质) that enter our body.

Many studies show that people who eat lots of vegetables have less heart disease, and eye problems and even cancer. But raw (生的) vegetables are not always best. The researchers found that 198 Germans who eat raw food were short of lycopene (番茄红素), the matter found in tomatoes and other red vegetables. "There is an idea that raw foods are always going to be better," says Steven K. Clinton, a professor at Ohio State University. "For fruits and vegetables, sometimes a little bit of cooking can be helpful. "

A number of factors (因素) decide how the vegetables do good to people's health before they reach the table, including where and how they were grown and stored before being bought. No single cooking way is best. Some nutrients are easily lost in cooking if they are cooked in different ways.

What cooked with the vegetables can also be important! When the vegetables were cooked with fat, the diners can get more nutrients. Fat can also make the taste of vegetables better, meaning that people will eat more of them.

Many years ago, my dad was facing a serious heart condition. He was unable to do a steady job. He fell suddenly ill and had to be admitted to the hospital.

He wanted to do something to keep himself busy, so he decided to volunteer at the local children's hospital. My dad loved kids. It was the perfect job for him. He ended up working with the seriously ill children. He would talk, play, and do arts with them.

One of his kids was a girl with a rare disease that paralyzed (瘫痪) her from the neck down. She couldn't do anything, and she was very depressed. My dad decided to try to help her. He started visiting her in her room, bringing paints, brushes and paper. He stood the paper up, put the paintbrush in his mouth and began to paint. He didn't use his hands at all. All the while he would tell her, "See, you can do anything you set your mind to. "At the end of the day, she began to paint using her mouth, and she and my dad became friends. Soon after, the little girl was sent home because the doctors felt there was nothing else they could do for her. My dad also left the children's hospital for a little while because he became ill. Some time later after my dad had recovered and returned to work, in came the little girl who had been paralyzed and only this time she was walking. She ran straight over to my dad and hugged him really tight. She gave him a picture she had done using her hands. At the bottom it read: "Thank you for helping me walk. "

My dad would cry every time he told us this story and so would we. He would say sometimes love is more powerful than doctor, and my dad—who died just a few months after the little girl gave the picture—loved every single child in that hospital.

Explore Central Park, one of the largest city parks in the world and one of the most famous symbols of New York. Let's have a look at its main sights.

Central Park is New York's largest city park and one of the biggest in the world, with an area of 843 acres (about 3. 4km2). This park is home to man-made lakes, waterfalls, grass and wooded areas. You will also find the Central Park Zoo, among other attractions in this greenspace of New York.

Besides being the city's primary green lungs, Central Park is also a favorite spot for many New Yorkers. It is perfect for sunbathing, going for walks, or doing any outdoor sports. Something that we found curious is seeing so many people running with their babies in prams (婴儿车).

On Foot or by Bicycle

To get to know some of the wildest parts of Central Park we suggest walking. However, to get a general feel for the whole park, the best thing to do is hire a bicycle and enjoy the scenery.

If you decide to hire a bike, you will find lots of bike rental stores around Central Park that are not very expensive.

Open Time

From 7 a. m. to 10 p. m. on weekends. From 6 a. m. to 8:30 p. m. on weekdays.

Price

Entry to the Park is free. But if you visit some parts like Central Park Zoo, you need to buy a ticket.

Transport

Subway: Line 5, 6, 7, A, B, C and D． Bus: Line M1, M2, M3, M4 and M10.