For years,Hagelin has studied what role scents（气味）play in wild birds' behavior.In 2010,Hagelin heard Jan Straley,a marine biologist,talk about the behavior of whales.Straley mentioned that whales often leap into the air,but nobody knew why.

    The mystery interested Hagelin.So Hagelin asked Straley whether they might leap to smell the air—maybe to locate food or look for danger.Straley replied that it was an interesting idea but there wasn't much evidence that whales have a sense of smell.To investigate the idea further,the two scientists teamed up.

    In the summer of 2011,they set up a post on the coast of southern Alaska.The researchers spent hours monitoring the direction of the whales and of the wind.The whales headed into the wind half of the time.This didn't prove that whales leap to smell,but it suggested that it is possible.

    Meanwhile,other researchers in Alaska were studying a region of the brain called the olfactory bulb（嗅觉球）in whales.Olfaction means the ability to smell.Humans also process smells in the olfactory bulb.

    In identifying a scent,you might think the nose does all of the work.However,the major role of a nose is to draw chemicals on the air and pass them across sensing cells.As chemicals come into contact,they give signals that travel directly to the bulb and then in the brain for further interpretation.

    The researchers discovered that the bulb in a whale was more complex than the one in a human.In whales,this smell-processing center takes up a share of the brain six times larger than it does in humans.

    The brain research suggested that whales probably can smell just as well as people—and possibly better than humans can.It is supposed that a good sense of smell could help them find food more easily.

    However,Hagelin is not sure of that.Now he is planning a new study that will examine whether whales do use the sense of smell to find food.

    Parents may think they're smart about where they store medicines, but their kids are smarter. Nearly 60,000 young children are rushed to the hospital every year after getting into medicines not meant for them, according to a new report from Safe Kids Worldwide.

    The report finds little connection between what parents know about storing medicines safely and what they actually do. Nine out of 10 parents know that medicines should be stored up and away out of reach and sight, but 7 out of 10 of them admit not doing that. They leave medicines out on kitchen counters, sinks and sofas, believing babies and toddlers(学步的儿童)aren't tall enough or strong enough to reach them. Unfortunately, they probably can. Children as young as a month have ended up in an emergency department because they'd been poisoned by getting into a medicine that was left within reach.

Most poisonings related to medicines—particularly among babies and toddlers—occur within their home. Kids develop rapidly and they want to explore their environment. At certain ages they have a lot of hand-to-mouth activity, and so it's very common for them to explore their environment and then try to taste what they find.

    The new Safe Kids worldwide report includes a survey of 2,000 parents with children under age 6. While the number of children visiting an emergency department for accidental poisonings had declined since the 2010 maximum, the decline has slowed in recent years.

    Prescription and over-the-counter medicines cause the most severe poisonings, but vitamins and supplements(补充品)can also cause problems. There are steps families can take to lower the risk for an accidental medicine poisoning.

    We just love giving cards in Britain. If there's a special occasion coming up, there's no doubt that we'll be there, card in hand, to celebrate it. And this isn't just for birthdays; we also give cards when people are ill or when they have got a new job. And even if you forgot somebody's birthday, there are even "sorry it's late" cards. So you can pretty much find a card for any occasion.

    Before coming to Italy I had never even considered that our love for card giving might not be shared by other countries. In fact, my workmates told me that hardly anyone sends Christmas cards in Italy and that they actually don't really give birthday cards either! Unbelievable! In the UK, if a close friend or family member didn't get me a card I'd feel upset! However, the only place you can buy cards in Italy is in a shop which sells school things. In comparison, we have whole shops that sell them in the UK and we even have different types of card shops.

    Although cards can take up your time, from choosing the perfect one, to thinking up the personal message inside, I think it's a really nice gesture. And especially with Christmas cards, it adds to that festive feeling. When I sit down to write countless cards to friends and family, I get that little bit happier that it will be Christmas soon! Especially when I see my own Christmas cards, proudly sitting on my desk wishing me a very merry Christmas.

    Of course, the problem comes when they're no longer needed, when Christmas is over. It makes me sad just to throw them all away, so I try and hang on to my favorite ones.

    Golden Gate Bridge

    Located in San Francisco, the Golden Gate Bridge started in the year 1933 to connect the San Francisco Peninsula with Marin County. It was finally thrown open to public traffic in 1937. It cost $25.7 million in the construction. Till the year 1957, the Golden Gate Bridge, at a length of 2,737 meters, was the longest suspension bridge in the world.

    Brooklyn Bridge

    The Brooklyn Bridge is located in Brooklyn. It is one of the oldest suspension bridges in the United States, having been opened in the year 1883. The length of the bridge is 1,843 meters. The bridge has been featured in several Hollywood movies.

    George Washington Bridge

    Also known as the Hudson River Bridge and the Columbus Bridge, the George Washington Bridge which connects Fort Lee to Manhattan came into use in 1931 after a construction period of almost 4 years. It is a two level suspension bridge that cost about $52 million to build.

    Mackinac Bridge

    This is the third biggest suspension bridge in the world at a length of 8,038 meters. The architect of this bridge was Dr. David B. Steinman, who directed the construction of the bridge which started in the year 1954 and opened to the public in 1958. People using this bridge are charged a certain amount of money.

Navajo Bridge

    Located in Arizona, this bridge crosses the Colorado River and is almost 250 meters long. The construction of this bridge started in the year 1927, ending two years later, costing $390,000. In the 1990s, a second bridge was built which was opened to the public in 1994. The first bridge is now used only by pedestrians.

    I live in Mumbai, India, a big city, but I came from a remote Kerala village. When I was a boy, hardly anyone spoke English around me. So, at age nine, Dad sent me to Montfort, an exclusive boarding school. There, I had to speak English or be punished. My uniform was typical English public school: grey jacket，tie，and black leather shoes-so different from the clothes most people in my village wore. And our official school sport was cricket, something I'd never heard of, let alone played, before arriving.

    Montfort had been built for the children of the British officials who once ruled India, but by the time I arrived in 1961, nearly all the students were from powerful Indian families. Its English traditions, however, continued.

    When I returned home for the holidays still wearing my uniform, people stared at me like I was an alien. "Speak some English," they teased. Looking back, I unwittingly brought a bit of English culture to my village.

    But English and too much Western influence are precisely what many traditionalists and politicians fear. They ask: Will such influences finish off our own culture?

    Various leaders have tried to erase the British traditions, pulling down old British statues and replacing many British-rule city names with older native names. Some even suggest changing our weekly day of rest from the "Western" Sunday to the "Hindu" Tuesday.

    Extreme responses I say. You can't change history, and it's only natural for foreign influences to affect a nation's culture. So Indian culture, as it is today, is really a mixture derived from centuries of foreign invasions.

    Add to that the massive changes of the 20th century resulting from the television, jet-age travel, the Internet, etc.

    Everything from clothes and language to food keeps changing, yet we remain Indian. I believe that Asian cultures are too ancient and deep-rooted to be weakened by foreign influences.

    Allow me to illustrate my point. Some time ago, I took my visiting Singapore-born-and-raised cousin to a Chinese restaurant for dinner. Later, while driving home，I talked about the fine Chinese food we'd just had.

    "Was that Chinese food?" my cousin exclaimed. "Oh, I didn't know." It must have tasted too Indian for him to realize it.

    Meanwhile, like countless others, my village has transformed over the past decades. Many people wear modern clothes and TV brings cricket into local homes. There's even an English- language school, where you can hear kids giggling, yelling, flirting-all in English, but with an Indian accent. Just like the Chinese food you get in India.

    Are these foreign influences something to worry about? I don't think so. India's Chinese food tastes pretty good to me!

English businessman Richard Branson made history on July 11, 2021 as he and three other crewmates became the world's first space tourists. The flight was made by a spacecraft named VSS Unity that was built by Branson's company, Virgin Galactic. The flight lasted slightly more than an hour, and took Branson and crew to an altitude（海拔）of 53.5miles above the Earth, just a little above the boundary（边界）of space which lies 50 miles above the Earth.

At that height, the atmosphere turns into the black of outer space and the Earth becomes a bent ball of blue. Travelers also exhibit weightlessness as there is no gravity, the force that keeps our bodies walking on the Earth's surface. Therefore, Branson and his fellows were able to float around in VSS Unity while enjoying the views. They were able to do that for three minutes before the spacecraft began its downward journey. It landed back at Virgin Galactic's space port in New Mexico, United States, which is the same place from where it had taken off 90 minutes before.

On landing back, Branson said, "I have dreamt of this moment since I was a kid but honestly, nothing could prepare you for the view of the Earth from space. It was just magical. I'm just taking it all in, and it's unreal."

July 11's flight is the start of space tourism for one and all. In early 2022, customers who can afford a ticket for a quarter of a million dollars can line up for a seat on a trip to space. And guess what—they will have a choice of spacecraft. Jeff Bezos, who owns a famous company, is all set to launch himself into space on July 20 on board a spacecraft built by his new branch company Blue Origin. Blue Origin will also carry tourists to space.