IQ scores have been measured (测量)since 1916, when Alfred Binet developed his intelligence list as follows:

    Some very famous people are known for their high IQ level. Jill St. John who has the highest score on this list was a major American film actress during the 1960's and 1970's. Jill was chosen to the University of California at the age of 14.

    Scientists have estimated (估算)the IQ scores that some famous historical people might have got. This was done by looking at their work and their ideas and the way they put them together Leonardo da Vinci gets that high score not only for his art but also for his idea of the helicopter (直升飞机). Without modern scientific tools, he created a lot of design drawings and patterns, which was ahead of his time.

    As more information comes out about 10-year-old Cindy Smith's death(死亡), worries about amusement park safety(游乐场安全性) grow.

Cindy is not the first child who died on an amusement park ride. 25 years ago, the mother of a 14-year-old girl waited to pick up her daughter outside Worlds of Fun. Laura Barry never saw her daughter Rosie alive again.

"My heart goes out to the Smith family more than they can ever possibly know," said Barry. She is one of the few people who truly know the hurt that family is feeling.

In 1995, Rosie's mom said that something went wrong on the Timber Wolf the night Rosie died. Police found no evidence(证据). Two men told the police that they saw Rosie standing before she fell out of the car.

"I couldn't believe that such a thing could happen still and again," said Barry. She believes Rosie's death should have been a wakeup call for amusement park safety.

She finds that not much has changed in the past years. Amusement parks race to build bigger, taller, faster rides. In her opinion, amusement parks just try to bring in visitors and give them the idea that riding is good, safe and fun. She believes that parks should have put safety first.

There is no exact number of amusement park deaths each year. It is quite low according to some websites. But Barry doesn't accept that. "My daughter was the only person that had ever been killed at Worlds of Fun in all of the years, among all of the thousands and thousands of people that went there. The number doesn't mean anything, you know, because when your child is the one, that's one too many," she said.

Recently, a short video showing a member of the cleaning staff at the Summer Palace in Beijing explaining Buddhist tourist sites(佛教景点) drew wide attention online.

In the video, Zhang Xu explains the tourist sites to several visitors who are doing research. What makes it special is that he expertly names a list of hard-to-pronounce Buddhist sites. He speaks so easily and confidently that it seems he is doing a tongue twister(绕口令). {#blank#}1{#/blank#}  But he is wearing the uniform worn by the cleaning staff and holding a broom(扫帚). After the explanation, Zhang smiles and returns to his work as though nothing has happened.

{#blank#}2{#/blank#} It quickly became a hot topic. People were surprised at how such a cleaner could become an expert in certain areas.

Zhang said he never thought of becoming famous online, as he only wanted to help the visitors who seemed puzzled(困惑的; 茫然的). He added, "I've been interested in architecture(建筑) since I was a child. {#blank#}3{#/blank#}"

Zhang became a member of the cleaning staff at the palace in late 2021. He is required to walk about 40,000 steps inside the palace every day. So he knows a lot about it. "The traditional architecture of the palace is not just a number of bricks(砖块). {#blank#}4{#/blank#} They know how to speak to people who understand them," Zhang said. "They show the beauty of traditional Chinese architecture."

For two centuries, the famous University of Cambridge debating society has hosted many prominent figures from world leaders to scientists to comedians.

On Nov 21, the Cambridge Union hosted another extraordinary guest—a non-human debater called Project Debater. Designed by IBM, Project Debater is a machine that uses Artificial Intelligence (AI) to form a spoken argument. It can even listen and answer to opposite statements, much like a real person.

In the Cambridge test debate, it argued the topic: AI will ultimately（最终）do more harm than good. Before the debate, more than 1,100 arguments for the positives and negatives of AI were submitted（递交）to the IBM website. The machine then analyzed these sources and formed the basis of its arguments in minutes. Project Debater then showed off its AI by arguing for both sides of the debate.

Over a four-minute speech, it argued first that, "AI can only make decisions that it has been programmed to solve while humans can be programmed for all situations."

In support of AI, it then argued that AI would create new jobs and "bring a lot more efficiency" to the workplace.

This isn't the first test for Project Debater. In June 2018, the machine went back-and-forth for 20 minutes against champion debater Harish Natarajan. 

According to New Scientist, on both occasions, Project Debater repeated points and didn't always sufficiently support them.

Speaking to Cambridge Independent, Noam Slonim, the project's lead engineer, said, "The AI is not perfect, but it's going in the right direction." The team hopes to improve the AI by researching why humans find certain arguments more persuasive than others. They also hope the test might provide well-informed viewpoints for society, governments and private companies. 

In Northwest China's Gansu Province, there are camel traffic lights at Mingsha Mountain and Yueya Spring, a scenic spot (景点) surrounded by sand dunes (沙丘). A red camel shows "stop" and a green camel shows "go". The special traffic lights, first designed to reduce the traffic jam in the desert, got much media attention in 2023 and have become a popular tourist attraction. 

According to a report, more than 3. 7 million tourists visited the spot in 2023, with 42 percent choosing camel rides. 

The quick increase in tourists needs more local camel herders (牧民). Zhao, 42, is an experienced camel owner from the Yueya Spring Village, who owns 21 camels. The rapid development of tourism has brought hope for the villagers. And they began to do the camel walking business at the scenic spot. 

In the busy season in summer, the scenic area is home to about 2, 000 camels. Each camel undertakes three trips a day. 

"Our village used to be poor, but now we are rich because of the camel walking business. They are like family members to us. In summer, we give them nice food and help them cool down. We also take them to the vet for annual check-ups in winter. " Zhao said.