Some 30,000 years ago, artists who lived in caves in Europe painted pictures of the animals around them: panthers, hyenas, rhinos, cave lions, mammoths and other creatures which have been extinct for a long time. The paintings were highly realistic. Some even showed movement.

The artwork, more than a thousand drawings, is considered the oldest group of human cave drawings which have ever been discovered. They were preserved because the cave was sealed—closed off--for more or less 23,000 years.

    Fast forward to December 18, 1994, a group of French cave scientists were exploring caves in southern France. Jean Marie Chauvet, who led the group then, describes the process of discovering the cave paintings. “At that time I was in the front, Eliette just walked behind me, Christian behind. Eliette said she saw two marks with red ochre and she said, ‘They came here.' And at this very moment everything began. The drawings and everything linked to the parietal art(壁画). That is where it is tarted.”

    Cave art expert Jean Clotttes reviewed the paintings. “I was amazed at the number of paintings there were and paintings of their quality and particularly in front of the panel of the horses.”

    Scientific analysis confirmed the prehistoric date of the artwork. Studies showed the drawings were created tens of thousands of years ago, before human history was written. The United Nations' cultural agency UNESCO lists the cave as a World Heritage Site. They say that the drawings form a remarkable expression of early human artistic creation of grand excellence and variety.

    The Chauvet Cave has been named after the explorer who first entered it. However, its environment and drawings are too fragile to be visited by human beings. So the cave is closed, and only people there for scientific purposes can go inside and see the artwork.

    However, French authorities asked experts to create an exact copy of the cave, called Pont d'Arc Cavern. The copy, which we also called replica, cost more than 59 million dollars to build. It opened at the end of April in France.

    Pascal Terrasse is the president of the cavern. He says everyone will be able to experience the thrill of looking at drawings made by the first humans in Europe. He says the place is magic because it is done so well. Authorities say they think as many as 400,000 people will be allowed to visit Pont d'Arc Cavern every year.

    Here's some good news for the foodies in the USA: One of China's most popular and fastest-growing restaurant chains is coming to the United States,and folks better watch out.This braised（炖，焖）chicken rice shop could upend a lot of competitors in the area.

    First opened in 2011,Yang's Braised Chicken Rice is definitely the new kid on the fast food block.However,the chain already has 5,000 locations globally,proving that they're perfect when it comes to speed,service,and flavor.

    They've even been compared to the most popular In-N-Out burger for their business model,swift output,and delicious food.Similar to the burger legend,Yang's specializes in just one item and does it right: Huang Men Braised Chicken Rice.The only customization you can make to this dish is the level of spiciness.Other than that,the base to every clay pot of this Shandong delicious food is the exact same.

    In fact,the recipe has barely changed over the past 80-plus years.That's because Yang's Huang Men chicken recipe is originally from the 1930s.Xiao Lu Yang,the founder of the new restaurant powerhouse,has inherited the recipe from his grandmother.He's made some slight changes,but otherwise it's the same chicken dish Yang's grandmother first sold in the 1930s.

    Yang first opened his namesake chain when he discovered the national popularity of Huang Men chicken served with rice,and it's still the only item sold in the chain's 5,000-plus locations.Many of those locations are in China,but some locations are in Melbourne,Singapore,and Japan as well.

    On September 10th,Yang's Braised Chicken Rice will open its first USA location in Tustin,California.Yang's sole menu offering,the Huang Men chicken with rice,sells for $9.99 per clay pot.Each pot comes with a generous helping of rice and chicken thighs（鸡腿肉）that braise with vegetables in Yang's secret sauce.The sauce is actually made in China and shipped to the US,meaning the flavor should almost perfectly replicate what Yang's sells in China.

    If you want to be one of the first people to taste the food in the US restaurant,make sure to reserve a spot for this September 10th grand opening.Otherwise,Yang's does plan to expand out to the rest of the country and beyond. Franchise offers have already come in from Chicago,Los Angeles,New York,and Canada.

    About aspirin:

    Aspirin is a commonly used drug which can be taken to relieve discomfort caused by numerous medical problems including headaches, toothache, inflammation and infections. It is also suitable to treat colds and flu-like symptoms, and to reduce a high temperature.

    Who can take aspirin?

    Adults and children over 16 years of age.

    Who should not take aspirin?

    Women who are pregnant, or plan to become pregnant. Aspirin may harm your unborn baby.

    Women who are breast-feeding. Aspirin can pass into your breast milk and may harm your baby.

    People who have any problems with the way the liver works or with the way the kidneys work.

How to take aspirin:

    Take aspirin after meals, with a full glass of water or milk.

    The recommended dose (剂量) ranges from two to three tablets at a time. Never take more than 4g 12 tablets) in any 24 -hour period.

    You must not take these tablets with any other medicine which contains any aspirin or painkiller.

    How to store aspirin:

    Keep all medicines out of the reach and sight of children.

    Store aspirin in a cool, dry place, away from direct heat and light.

    Do not put aspirin in the bathroom because the dampness there can cause it to lose its effectiveness.

    Throw away aspirin that smells strongly of vinegar.

    Possible side effects:

    Feeling sick, increased risk of bleeding, stomach pain, indigestion and heartburn are common. If these effects continue, contact your doctor.

    Ringing in the ears, difficulty breathing, dizziness, and mental confusion are rare. If these occur, stop taking the drug and contact your doctor for further advice.

    Chinese scientists recently have produced two monkeys with the same gene, Zhong Zhong and Hua Hua, using the same technique that gave us Dolly the sheep. These monkeys are not actually the first primates(灵长类)to be cloned. Another one named Tetra was produced in the late 1990s by embryo(胚胎)splitting, the division of an early-stage embryo into two or four separate cells to make clones. By contrast, they were each made by replacing an egg cell nucleus(原子核)with DNA from a differentiated body cell. This Dolly method, known as somatic cell nuclear transfer(SCNT), can create more clones and allows researchers greater control over the edits they make to the DNA.

    Success came from adopting several new techniques. These included a new type of microscopy to better view the cells during handling or using several materials that encourage cell reprogramming, which hadn't been tried before on primates. Still, the research process proved difficult, and many attempts by the team failed. Just two healthy baby monkeys born from more than 60 tested mothers. This leads to many researchers' pouring water on the idea that the team's results bring scientists closer to cloning humans. They thought this work is not a stepping stone to establishing methods for obtaining live born human clones. Instead, this clearly remains a very foolish thing to attempt, it would be far too inefficient, far too unsafe, and it is also pointless.

    But the scientists involved emphasize that this is not their goal. There is now no barrier for cloning primate species, thus cloning humans is closer to reality. However, their research purpose is entirely for producing non-human primate models for human diseases; they absolutely have no intention, and society will not permit this work to be extended to humans. Despite limitations, they treat this breakthrough a novel model system for scientists studying human biology and disease.

    Any foreigner who has tried to learn Chinese can tell how hard it is to master the tones required to speak and understand. And anyone who has tried to learn to play the violin or other instruments can report similar challenges.

    Now researchers have found that people with musical training have an easier time learning Chinese. Writing in the online edition of Nature Neuroscience，researchers from Northwestern University say that both skills draw on the same parts of the brain that help people discover changes in pitch(音调).

    One of the study's authors，Nina Kraus，said the findings suggested that studying music "actually tunes our sensory system" .This means that schools that want children to do well in languages should hesitate before cutting music programs，Dr. Kraus said. She said music training might also help children with language problems.

    Mandarin(普通话)speakers have been shown to have a more complex encoding(编码) of pitch patterns in their brains than English speakers do. This is because in Mandarin and other Asian languages，pitch plays a central role. A single­syllable word can have several meanings depending on how it is intoned.

    For this study，the researchers looked at 20 non­Chinese speaking volunteers，half with no musical background and half who have studied an instrument for at least six years.

    As they were shown a movie，the volunteers also heard an audio tape of the Mandarin word “mi” in three of its meanings: squint，bewilder and rice. The researchers recorded activities in their brain stems to see how well they were processing the sounds. Those with a music background showed much more brain activities in response to the Chinese sounds.

    The lead author of the study，Patrick C.M. Wong，said it might work both ways. It appears that native speakers of tonal languages may do better at learning instruments.

    In the space of just two years, the app Douyin, created by Beijing-based company ByteDance, has gathered more than half a billion users—around 40%of them outside China—who share short videos of themselves lip-syncing (假唱), cooking, dancing or just being silly. What sets ByteDance apart is its success in the social media category, which is controlled by Facebook, Twitter and Snap—all Western companies.

    ByteDance calls itself an artificial intelligence company. It uses machine learning and algorithms (算法) to figure out what people like most and give them more of what they want to see. On Douyin, people can edit and beautify 15-second videos before posting them online. The app has even made a phrase to describe people glued to their customized feeds: "shua Douyin" or "scrolling through Douyin". Last year, the company released TikTok, the overseas version of Douyin. ByteDance's growing video empire has made it the world's fifth biggest app maker. ByteDance says TikTok and Douyin together have more than 500 million monthly active users.

    Investors like ByteDance because its hundreds of millions of users attract a lot of advertising money. The video apps are lucrative because they attract a lot of users in their teens and 20s, who are more generous with the money. ByteDance also makes money through income sharing deals. People on TikTok, for example, can buy digital coins to give to other people on the app—like throwing money in a performer's tip jar. ByteDance takes a cut of those earnings.

    ByteDance's founder and CEO is Zhang Yiming, a 35-year-old former Microsoft employee. People who have worked with Zhang describe him as someone who thinks deeply about technology and spends much of his free time writing code.

    Like Facebook and Twitter, ByteDance is also battling fake news and inappropriate content. ByteDance promises to add thousands more employees to review content on Douyin.