Mrs. Turner's telephone number was 3463, and the number of the cinema in town was 3464. People often made mistakes and telephoned her when they actually wanted the cinema.

    One evening the telephone bell rang and Mrs. Turner answered it. A tired man's voice came over the telephone, “At what time does your last film begin?” “I'm sorry,” said Mrs. Turner, “but you have the wrong number. This is not the cinema.” “Oh, it began twenty minutes ago? ” said the man. “I'm sorry about that. Well, goodbye.” Mrs. Turner was very surprised, so she told her husband. He laughed and said, “No, that wasn't a mistake. The man's wife wanted to go to the cinema, but he was feeling tired, so he telephoned the cinema. His wife heard him, but she didn't hear you. Now they will stay at home this evening, and the husband will be happy!”

    How do the world's only flying mammals communicate? Researchers have observed young bats adopting new “dialects” simply by hearing them repeatedly, making them one of the few animals known to have a capacity for vocal (声音的) learning. “These bats may help us clarify the evolution of speech acquisition (习得) skills,” says Yosef Prat, a PhD at Tel Aviv University (TAU).

    For one year, researchers raised 14 Egyptian fruit bat pups with their mothers in controlled area, exposing each young bat to two different vocalizations: the natural call of its mother and a separate recording that varied in pitch (音高) or frequency. They found that the pups in each group developed a dialect like the recording. “The general assumption in this field is that most animals develop their born vocalizations regardless of what they hear, and that human vocal learning abilities have developed during evolution,” says Mr Prat. “The finding that bats learn the common dialect in their rest place was unusual.”

    Scientists know little about the origin of spoken language, which is believed to have appeared in humans within the past 500,000 years. Dozens of theories attempt to explain the complexity of this skill, but none have done so conclusively.

    “Studying vocal communication and vocal learning in animal models is a very useful way to approach the problem,” says Olga Feher, an assistant professor at the University of Warwick in England.

    But animal vocalizations and human speech are very different things, says Jamin Pelkey, a professor at Ryerson University. “All species communicate. Unlike other animals, though, human beings are able to use sound patterns for functions that are far stranger—functions that are imaginative, theoretical, and critical. When speech is involved in these stranger functions, that is what we mean by spoken ‘language'.”

    Jealousy is such a powerful emotion that at least one study has characterized it as the third leading cause of non-accidental homicide(杀人) in all cultures. In a recently published study, researchers experimented with dogs to see whether they, like humans, have the nature of jealousy.

In an experiment, the authors took 36 dogs—along with their owners—and observed the dogs' behavior as their masters interacted with three non-living objects. One object was a children's book, which they read aloud; another object was a plastic pumpkin lantern; and the third was a mechanical stuffed dog that gave out a bark when the owner pressed a button.

    Former studies concluded that babies were probably capable of jealousy. In the experiment, their mothers showed attention to a life-like doll instead of their child, and other objects. The babies were reportedly more likely to respond with “negative” behavior if their mother turned to pay her attention to the doll.

    In the dog experiment, authors instructed the dog owners to push the bark button on the stuffed dog's head, and then speak to it sweetly, while ignoring their own dog. After that, they showed attention to the pumpkin lantern, and read the children's book, while also ignoring their dog.

    It is interesting to see the dogs were far more likely to act aggressively when their owners spoke to the stuffed dog than when they paid attention to the other objects. One-fourth of the dogs snapped at the stuffed dog, while only one dog snapped at the lantern or the book. The dogs were also more likely to push or touch their owners as they interacted with the mechanical dogs, and tried to get in between the owner and the stuffed dog more frequently than the other objects.

    “One possibility is that jealousy developed in species of many young relying on the parents, the young compete for parental resources such as food, attention, care, and affection,” the authors wrote.

    Rosa Parks became famous in 1955 when she refused to give up her seat on a bus to a white passenger in Montgomery, Alabama. She was important in the movement for civil rights（民权） in the American South during the 1950s and 60s. At the time, blacks in the South were forced to sit in the back of public buses and to give up their seats to white people.

    Parks moved to Detroit, Michigan, in 1957 to escape death threats. She continued living in Detroit until her death in 2005, at age 92. But the house in Detroit where Parks lived for many years was abandoned and scheduled to be torn down. Her niece, Rhea McCauley, bought it for $500 to stop it from being destroyed. She then gave it to American artist, Ryan Mendoza.

    Mendoza and others took it apart and then sent it across the Atlantic Ocean to the German capital of Berlin. There, he led efforts to rebuild the house. It now is behind his own house in Berlin. It gets daily visitors, although it is difficult to find, Mendoza said.

    But less than a year after the house was rebuilt in Berlin, Mendoza decided it should be returned to the United States. He made the decision after deadly violence took place at a recent white nationalist event in Charlottesville, Virginia. That incident increased calls for removing statues of Confederate（美国南部联邦的） leaders from the Civil War in the U.S.

    Mendoza said there are not enough civil rights monuments "to balance things out" with the Confederate statues. He said the Rosa Parks house belongs back in America "Imagine if the house were on a public setting in a prominent city in the U.S.," Mendoza said. "That's an education tool that shouldn't be denied by the American people. They have to know their past."

    The house would be welcomed back in Detroit. Detroit has failed to protect historical homes in the past. Such houses include the former home of Ralph Bunche, the first African-American to win the Nobel Peace Prize. Detroit's failure to protect history also is shown by the loss of the Rosa Parks house, Hammer said.

    It was only -28℃ when we landed in Siberia. That was cold enough to make breathing difficult. Five minutes later, I asked for a second pair of gloves and pulled my scarf tight over my nose and mouth. Clearly, I was a complete beginner to this. At the bus station, Mikhail laughed when we asked him why he wasn't freezing. He had spent the whole day outside only with his fur hat and a sheepskin coat for warmth. It was mid-afternoon and icicles（冰柱）were hanging from his beard.

    In Siberia, there's a belief that enough vodka（伏特加酒）will save you from the cold. However, it's wrong. The local hospital is crowded. Even here, icicles are hanging down on the inside of the windows, though the heating is at full power. The doctors are too busy to talk to us.

    The winter here is cruel —and this one is especially so. After her work as a teacher, Natasha Fillipova comes home. It is a freezing house. She shows us the bedroom — where ice has built up on the inside walls. One night, Natasha washed her hair before going to bed. When she woke up, it was frozen hard to the wall. Now the children are doing their homework in the bathroom — the only room warm enough to sit in. Natasha doesn't want to complain. But she is angry with the government and the architects for building terrible houses.

    The houses here are supposed to stand up to -40℃, but they don't. And her children are ill with coughs and colds. Of course, Natasha's anger is brief, and she seems embarrassed about it. According to her, Siberians are used to the cold weather. People here prefer to depend on themselves and the knowledge that spring will come in the end.

    Kang Sung-il buys Sancho, his Pomeranian, a toy every business trip and this lunar New Year holiday will dress him up in s new $50 suit to visit 'grandma', Kang's mother. Kang and his wife say children are too expensive and bring too much pressure. Instead they have chosen to shower Sancho with love and gifts.

    They are not alone. South Korea's pet industry is booming, fuelled by the same factors that have made the country's birth rate, at 1.05 births per woman, the lowest in the world: the high cost of education and housing as well as extremely long working days.

    "Social pressures in South Korea are such that parents are required to provider resources for decades from private schooling to art classes," said Kang a 39 year old manager of a pet funeral home.

    On top of education expenses, an average and household must budget roughly 12.8 years of income to buy a mid-range home, compared to 8.8 years in 2014, data from KB Kookmin Bank shows. Adding to their stress, south Koreans work the third most hours per year among OECD (经合组织) nations, next only to Mexico and costa Rica.

    Pet-owning households have rose to 28 percent of all South Korean households in 2018, compared with 18 percent in 2012, government data shows.

    That in turn has resulted in a prosperous pet care industry whose offerings include tailored pet diets and high-priced photo shoots. Pet-related startup s are also popular with venture capitalists. The south Korean pet-related industry was worth 2.7 trillion won ($2.4 billion) last year, and that could more than double in size by 2027, according to the Korean Rural Economic Institute.