1 . Facial recognition software has found an unlikely new application: scanning the faces of thousands of British children in school canteens.

Nine schools in North Ayrshire will today start taking lunch payments by scanning the faces of pupils, claiming that the new system speeds up queues and is more secure than the card payments and fingerprint scanners they used previously. “It’s the fastest way of recognising someone at the till,” said David Swanston, the managing director of CRB Cunninghams, the company that installed the systems. “In a secondary school you have around a 25-minute period to serve potentially 1,000 pupils. So we need fast productivity at the point of sale.” He said the average transaction time was cut to five seconds per pupil.

However, privacy campaigners say there is little need to spread out facial recognition technology, which has been criticized for often operating without gaining approvals from the owners. Swanston argued that CRB Cunningham’s system, which uses cameras to check against coded face-print modes stored on servers at the schools, was different from live facial recognition systems that scan through crowds to identify faces. Live facial recognition has previously caused debate after being used by schools for security or to monitor attendance.

North Ayrshire committee said that 97 percent of children or their parents had given agreement for the new system. “Pupils often forget their PINs and unfortunately some have also been the victim of PIN cheating, so they are supportive of the planned developments and appreciate the benefits to them,” the council said.

But some parents said they were unsure whether their children had been given enough information to make their decision, and suggested that peer pressure had also played a role.

2 . A new technology project in southern Greece is helping visitors experience the ancient birthplace of the Olympic Games.

The project used Augmented Reality (AR) to recreate temples and competition areas in the ancient city of Olympia. It was recently launched in the city, one of the world’s major archaeological sites. Augmented Reality is a technology that can project computer-created imagery onto special eyeglasses. Through the eyeglasses, the images appear along with other physical objects in the environment.

The project is a partnership between American software maker Microsoft and Greece’s Ministry of Culture and Sport. The ministry helped Microsoft map and build virtual representations of Olympia. The city was used for nearly a thousand years to host the games in ancient Greece that served as the model for the modern Olympics. The experience provides users the chance to virtually walk through the ruins of Olympia. At the Olympic Museum in Athens, people can also use Microsoft’s AR headsets for a similar experience.

Greek Prime Minister Kyriakos Mitsotakis joined a group of schoolchildren who were using the app for the first time. “I’m absolutely thrilled that we’re able to present to the world a completely new cultural experience utilizing technology to recreate the ancient world of Olympia, ” Mitsotakis told the media.

Students from a local middle school looked at statues and structures that were brought to life on their phones. One of the children, Panagiotis Christopoulos, called the project “impressive”. “I think it can help with teaching in schools, ” the student said. They were able to virtually visit inside and outside settings to explore where ancient Olympians had competed in different sports.

The project began 18 months ago with a series of imaging flights to help map areas across Olympia. Microsoft is to build several data centers in and near Athens as part of a $ 1 billion investment agreement with the Greek government.

3 . Here are four destinations that have to be included in any trip to the northeastern city Harbin.

At Harbin Ice-Snow World, you can not only see the world-famous ice architecture, but also have great fun! You can have hotpot at igloo restaurants, enjoying the product of both ice and fire, and go down the world’s longest ice slide.

The Sun Island Snow Expo is the world’s largest snow sculpture(雕塑)art show. You can play in the snow as well as admire the art made from it. Tourists from the south might be surprised by the bright sunshine reflected in the snow, so don’t forget the sunscreen. This is a good place to toss water into the air and watch it turn into ice immediately. Find a safe place with no one nearby, and enjoy the unique phenomenon.

One place you shouldn’t miss when visiting Harbin is Yabuli Ski Resort, where you can ski down snow-covered mountains. Yabuli Sun Mountain Resort is surrounded by mountains and forests. The snow is thick and moderately hard. There are junior, middle and senior ski runs. Professional staff are available to improve your skiing ability and give you an experience of a lifetime.

It might not be part of an ordinary tourist plan, but it is worth an extra night in Harbin! The winter is cold and the night is long, so why not go to the theatre? Northerners consider it a romantic thing to do in winter. Harbin was listed by the United Nations as a music city in 2010. Harbin Grand Theater is where artistic souls defrost a little to share their love of art.

4 . Technology is likely to play a big part in reaching its climate goals in the future.

Fusion is the process that fires the sun. But some experts say it could someday power our homes. Fusion happens when the nuclei (核) of two atoms are subjected to extreme heat. This leads to the formation of a new larger atom and large amounts of energy. One problem is the process itself requires a large amount of energy. Developers of the technology haven’t yet performed a fusion reaction that releases more energy than it requires. In addition, running an electric power plant of fusion would require the resulting heat to be contained in an economical way.

Advanced nuclear plants would be smaller than today’s massive nuclear reactors. Experts say they could be used in rural areas and could take over for wind and solar power when the sun goes down or the wind dies. But advanced nuclear reactors are difficult and costly to build. Critics say they would also create more waste. And they would run on uranium (铀), which could make some advanced reactors more appealing to militants (激进分子) seeking materials to make weapons.

Currently, there are 15 direct air capture plants operating worldwide, getting CO directly from the air and puts the gas underground. The costs are currently high. But supporters say those costs will fall as the technology improves. They also say tax breaks for businesses could help the technology. But critics say offering large credits could actually lead to more plants continuing to burn fossil fuels.

Hydrogen (氢) can be mixed with natural gas to make a cleaner-burning fuel. This could power a fuel cell vehicle. Such a vehicle would release environmentally friendly water vapors.

So-called clean hydrogen can be produced using energy methods such as wind and solar. But those methods are more costly than “grey hydrogen”, which is made with fossil fuels. Geothermal power plants capture heat up to 370 degrees Celsius far below the earth’s surface. The heat creates steam that can turn turbines (涡轮机) to produce electricity. But the technology would need to greatly expand to become a major alternative to fossil fuels.

5 . New England holds some special museums. They are devoted largely or entirely to the work of just one person. And they are the artists’ birthplaces or onetime homes. Here are four examples of such museums.

Cyrus E. Dallin Art Museum

The name Cyrus E. Dallin (1861-1944) might not be familiar, but several of the artist’s sculptures (雕塑) are, especially those related to Native Americans. A good example is his “Appeal to the Great Spirit” standing in front of the Museum of Fine Arts. Born in Utah, he lived in Arlington for the final four decades of his life. The museum is in the Jefferson Cutter House, an 1830 Greek styled building.

Norman Rockwell Museum

Rockwell (1894-1978) was America’s well-known artist. The museum, founded in 1969, moved into its present location, Robert A.M. Stern-designed building in 1993. Its 998 paintings and drawings are the largest single collection of Rockwell's artworks.

Kids 16 and under: free; adults: $20; the old: at a 10% discount (折扣)

Edward Gorey House

Edward Gorey (1925-2000) was an artist, but he was also an author and clothes designer. Gorey bought this 18th-century house in 1979 and lived there for the rest of his life. Edward Gorey House is also known as the Elephant House. Gorey had respect for animals. The activities of the house, from art education to exhibits, show Gorey's support of animal well-being.

Gibert Stuart Birthplace and Museum

Gilbert Stuart (1755-1828) is responsible for what may well be the most familiar work of any American artist, His drawing of George is the basis of the first president’s portrait (画像) on the dollar. Stuart painted more than a thousand portraits throughout his life.

7 . At the table sat my new mentees（学员）: six eager undergraduates who signed to work on a project 1 designed. "Starting today. I get to learn what it's like to be an adviser." I thought to myself excitedly. But a few minutes later, the students broke the news: They didn't have any training related to the project. I couldn't help sighing. How would this ever work?

My inspiration to engage undergraduates in my research came after two years of working as a teaching assistant. Many of my undergraduate students had voiced the same frustrations I once had: They were expected to absorb facts and use them in exams, without any real critical thinking or chance to apply what they had learned. I believe I could fill that gap by creating a project related to my own work and employing undergraduates as the researchers.

My Ph.D. adviser was supportive, knowing it would be a good experience for undergraduates. My department purchased the fish we would study, and a government research lab offered space. Everything was in place—except for the students' training. I was worried. But backing out was not an option.

I reminded myself how green I had been on my first day in the lab. After 3 hours there, I had to throw everything out and start over the experiment, because I mistook the concentrations of chemicals. But my mentor said nothing and he let me learn from the scene.

His example inspired me. On the first day in my lab. I walked new mentees through the facilities. However, I noticed that some forgot my instructions. My instinct（本能）was to jump in and save the day. But I resisted the urge to intervene（介入）and watched proudly as the students identified the mistakes and learned from them.

Six months later, in a reflection meeting, the students thanked me for letting them find their own way to grow as scientists.

8 . Despite the successful creation of young by cloning various species, researchers still have limited understanding of the technique. Although the overall efficiency and safety of cloning in animals has significantly increased over the past fifteen years, it is not yet a safe process. For example, the rate of dead births and developmental abnormalities remains high. Another source of concern is the risk of premature ageing because of shortened telomeres（端粒酶）. Telomeres get shorter as an animal gets older. When the telomeres of a cell get so short that they disappear, the cell dies. The concern is that cloned animals may get the shortened telomeres, with possibly premature aging and a shortened lifespan as a result.

For many, the fact that cloning is unsafe provides a good reason not to pursue it. It has been argued that it would simply be wrong to put such significant health risks on humans. The strongest version of this argument states that it would be wrong now to produce a child by cloning because it would be a case of illegal birth. Against this, it has been argued that even if cloning is unsafe, it may still be permissible if there are no safer means to bring that very same child into existence.

With the actual rate of advancement in cloning, one cannot deny a future in which the safety and efficiency of cloning will be equal or superior to that of test-tube baby. A remaining question is, then, whether those who condemn（谴责）cloning because of its experimental nature should continue to condemn it morally and legally. Some authors have reasoned that if, in the future, cloning becomes safer than sexual reproduction, we should even make it our reproductive method of choice.

9 . The remains of a gold mask were found at an archaeological site in China's Sichuan province in March 2021. Weighing about 280 grams and estimated to be made from 84% gold, the mask was one of over 500 items unearthed from six newly discovered sacrificial pits（坑）, according to the country's National Cultural Heritage Administration.

The finds were made at Sanxingdui, a 4.6-square-mile area outside the provincial capital of Chengdu. Some experts say the items may shine further light on the ancient Shu state, a kingdom that ruled in the western Sichuan basin until it was conquered in 316 BC.

In addition to the gold mask, archaeologists uncovered golds and artifacts（手工艺品）made from ivory and bone. The six pits, of which the largest has a footprint of 19 square meters, also yielded an as-yet-unopened wooden box.

More than 50,000 ancient artifacts have been found at Sanxingdui since the 1920s, when a local farmer accidentally came upon a number of relics at the site. A major breakthrough occurred in 1986, with the discovery of two pits containing over 1,000 items.

A third pit was then found in late 2019, which led to the discovery of a further five last year. Experts believe the pits were used for sacrificial purposes, explaining why many of the items contained were burned as they were dropped in and buried.

Sanxingdui is believed to have sat at the heart of the Shu state, which historians know relatively little about due to a shortage of written records. The site has revolutionized experts' understanding of how civilization developed in ancient China. In particular, evidence of a unique Shu culture suggests that the kingdom developed independently of neighboring societies in the Yellow River Valley, which was traditionally considered to be the cradle（摇篮）of Chinese civilization.

10 . Scientists at the Massachusetts Institute of Technology (麻省理工学院) have turned spider webs into music——creating an strange soundtrack that could help them better understand how the spiders output their complex creations and even how they communicate.

The MIT team worked with Berlin-based artist Tomas Saraceno to take 2D (two- dimensional) laser (激光) scans of a spider web, which were linked together and made into a mathematical model that could recreate the web in 3D in VR (virtual reality). They also worked with MIT’s music department to create the virtual instrument.

“Even though the web looks really random (随机)，there actually are a lot of inside structures and you can visualize (可视化) them and you can look at them, but it’s really hard to grasp for the human imagination or human brain to understand all these structural details,” said MIT engineering professor Markus Buehler, who presented the work on Monday at a virtual meeting of the American Chemical Society.

Listening to the music while moving through the VR spider web lets you see and hear these structural changes and gives a better idea of how spiders see the world, he told CNN. “Spiders use vibrations (振动) as a way to locate themselves, to communicate with other spiders and so the idea of thinking really like a spider would experience the world was something that was very important to us as spider material scientists,” Buehler said.

Spiders are able to build their webs without shelves or supports, so having a better idea of how they work could lead to the development of advanced new 3D printing techniques. “The reason why I did that is I wanted to be able to get information really from the spider world, which is very weird and mysterious,” Buehler explained. In addition to the scientific value, Buehler said the webs are musically interesting and that you can hear the sounds the spider creates during construction. “It’s unusual and eerie and scary, but finally beautiful.” he described.