There is a famous story about British poet Samuel Taylor Coleridge. He was writing a poem when he was interrupted by a knock at the door.

    This was an age before telephones. Someone was delivering a message. When Coleridge got back to his poem, he had lost his inspiration. His poetic mood had been broken by the knock on his door. His unfinished poem, which could otherwise have been a masterpiece, would now never be more than a little piece.

    This story tells how unexpected communication can destroy an important thought, which brings us to the cell phone. The most common complaint about cell phones is that people talk on them to the annoyance of people around them. But more damaging may be the cell phone's interruption of our thoughts.

    We have already entered a golden age of little white lies about our cell phones, and this is by and large (大体上) a healthy, protective development. “I didn't hear it ring” or “I didn't realize my phone had shut off” are among the lies we tell to give ourselves space where we're beyond reach.

    The notion of being unreachable is not a new concept—we have “Do Not Disturb” sign on the doors of hotel rooms. So why must we feel guilty when it comes to cell phones? Why must we apologize if we decide to shut off the phone for a while?

    Now time alone, or a conversation with someone next to us which cannot be interrupted by a phone, is something to be cherished. Even cell phone devotees（信徒）, myself usually included, can't help at times wanting to throw their phones away, or curse(咒骂) the day they were invented.

    But we don't and won't, and there really is no need. All that's required to take back our private time is a general social recognition that we have the right to it. In other words, we have to develop a healthy contempt (轻视)for the rings of our own phones.

    A cell phone call deserves no greater priority than a random word from the person next to us，though the call on my cell phone may be the one-in-a-million from Steven Spielberg—who has finally read my novel and wants to make it his next movie. But most likely it is not, and I'm better off thinking about the idea I just had for a new story, or the slice of pizza I'll eat for lunch.

    Once upon a time, there was a lovely vegetable field, on which grew a very thick tree. Both the vegetables and the tree gave the place a wonderful appearance, which was the joy of the garden's owner. What no one knew was that the vegetables in the field and the tree couldn't stand each other. The vegetables hated the tree's shadow, because it left them only just enough light to survive. The tree, on the other hand, hated the vegetables because they drank nearly all the water before it could get to him, leaving him with just enough to survive.

    The situation became so extreme that the vegetables got totally fed up and decided to use up all the water in the ground so that the tree would dry up. The tree answered back by refusing to give the vegetables shadow from the hot midday sun, so they both began to dry up. Before long, the vegetables were really thin and the tree's branches were drying up.

    Neither of them thought that the gardener, on seeing his vegetable field becoming worse, would stop watering it. When he did that, both the tree and the vegetables really learned what thirst was. There seemed to be no solution, but one of the vegetables, a small courgette（小胡瓜）, understood what was going on, and decided to deal with it. Despite the little water and the unbearable heat, the little courgette did all he could to grow, grow... He managed to grow so big that the gardener started watering the field again. The gardener wanted to enter that beautiful big courgette in some gardening contest.

    They should really learn how to live in harmony）with those around them, doing the best they could. So they decided to work together, and help each other instead of fighting, using both the shadow and the water in the best combination to grow good vegetables. Seeing how well they were doing, the gardener now gave the best of care to his vegetable field, watering it better than any other field for miles around.

    Food is extremely important to us human beings and rice is one of the main food in the world. Australian researchers have discovered a way to genetically engineer rice which would provide significant health benefits to more than half the world's population.

    A study undertaken at the University of Tasmania, published in a respected journal of the National Academy of Sciences, discovered a method to increase the resistant starch (抗性淀粉）content in rice, making it more digestible and leading to lower rate of diabetes (糖尿病）and overweight.

    Steven Smith, the lead author of the study and a foreign expert for the Chinese government who has been appointed to work on crop improvement projects by the Chinese Academy of Sciences, said increasing the higher resistant starch content gave this “designer” rice many added health benefits. “We have discovered that we can increase the amount of resistant starch in cooked rice, which could provide health benefits for a large number of people in Asia and beyond,” Smith said in a media release on Friday. “The same approach can be adapted for use in other cereals, including wheat. Not only can it have benefits for diabetes and obesity, but also for disorders of the bowel(肠）including cancer.”

    Rice is the main food for more than half the world's population, providing much of the world with most of their calories. Smith said that as the rate of diabetes and obesity in Asian countries continued to grow, his “designer” rice could provide a way to limit health problems.

    “Not only does resistant starch reduce the possibility of a 'sugar hit' but it also reduces the appetite and promotes the growth of the healthy germs.” Smith said.

Smith divides his time between the University of Tasmania and his research lab in Beijing where he hopes to make significant advance in sustainable (可持续的）living.

    A strange object was found in a small city called Carlos Spegazzini, just a short drive from the capital city of Buenos Aires.

    When farmer Jose first found an odd scene in his farmland, he began to dig at the object. However, he quickly found himself running to tell his wife. Jose needed more support if he was going to investigate this strange thing.

    Even the dog was hesitant to investigate. Unfamiliar with the object, man's best friend was not about to jump at it with little concern. Therefore, they chose to call in somebody who has a better idea of what to do.

    When the police first showed up, they were just as stumped as Jose. They knew this object was something out of the ordinary. It might even be something extraordinary, so more questions appeared.

    It quickly became apparent, it was time to call in the big guys. That's right; when you find something that appears to be out-of-this-world, it's time to call in those who study the mysteries of the old world.

    Authorities called in archaeologists who jumped at the chance to study the object. They quickly determined one thing was for certain: the ancient big one that left this behind was absolutely massive! The group was unable to move the shell, as it weighed nearly two tons!

    Clearly, this massive beast was not the only of its kind existing in the modem-day world. Similar fossils had been found in the surrounding areas and had even made their way to museums. But what was the ancient beast?

    The Hong Kong-Zhuhai-Macau Bridge, the world's longest sea-based project, comprises four parts: a 22.9-kilometer steel bridge, two artificial islands, a submerged sea tunnel extending for 6.7 kilometers, as well as leading bridges that connect the bridge to the cities.

    For a bridge project, designers prefer to build all the structure on the ground, and only choose the tunnel when there is no alternative. However, for the HZMB, the most practical design is to integrate bridge, island and tunnel to form a complete cross-sea channel.

    "The Pearl River Estuary （河口）holds a world-level shipping channel. Smooth traffic should be guaranteed. And the location is near the Hong Kong International Airport. With about 2,000 flights taking off and landing at the airport, the bridge cannot be built too high for safety reasons, said Meng Fanchao, chief designer of the project. ^"But you cannot have a submerged sea tunnel without any support. That forced us to build the artificial islands."

    Chinese engineers declared a trail in installing deep-immersed tunnel tubes. There is no model for us to refer to as all the cases are shallow-buried tubes, said Meng.

    "For lack of experience, the installation of the first tube lasted for 96 hours," said Yin Haiqing, deputy manager of the Project Management Department. "Everyone was exhausted when we made it."

    The 6.7-kilometer tunnel is the world's longest submerged sea tunnel.

    Two artificial islands, covering an area of 200,000 square meters, help create a smooth transition between bridge sections and tunnels. Different from traditional island, the engineers put 120 steel cylinders （圆柱）with a 22-meter diameter （直径）into the seabed, make out the shape of an island, and fill the island with soil. It is an innovative way they adopted to build the artificial island, making it firmer, more efficient and friendly to the marine ecology.

    The HZMB provides a fixed link between the two Chinese economic centres Hong Kong and Macau and the mainland of China at Zhuhai.

Dark Sky Parks around the World

    Warrumbungle National Park

    Situated in the central west slopes of New South Wales is Australia's only dark sky park, Warrumbungle. The park has served as a dark sky park since July 2016. Its crystal-clear night skies and high altitude make it a natural, educational, and astronomical heritage site in the southern half of the earth. Tourists can use Australia's largest optical telescope within the park boundaries to view the auroras (极光), the Milky Way, and faint shooting stars.

    Sark

    Sark is a Channel Island near the coast of Normandy under the protection of the UK. It was the World's First Dark Sky Island set up in January 2011. Its historical and cultural blend attracts over 40,000 tourists annually. With no motor vehicles and public lighting on the island, there is an exceptional view of the dark skies. A rich Milky Way is visible in the dark night skies from the shores of the island.

    Pic du Midi de Bigorre

    Pic du Midi de Bigorre in France was designated as a dark sky park in December 2013 making it the second largest dark sky park in the world. The park covers 3. 112 square kilometers spread across the Pyrenees National Park and UNESCO's World Heritage site, Pyrenees-Mont Perdu. The park attracts over one hundred star watchers every year. The Observatory Midi-Pyrenees, which was built in 1870, is one of the world's highest museums at a height of 2,877 meters above sea level.

    Ramon Crater/Makhtesh Ramon

    Ramon Crater is a unique 1,100-square-kilometer nature reserve located in the Negev Desert in Israel. In 2017, the Ramon Crater became the first designated dark sky park in the Middle East. Its location, rough climate, and forbidding landscape that are characteristic of the Negev have largely defeated historical attempts for human settlement, making it a great place to view the night skies. Stargazers usually camp in the desert to have an uninterrupted view of the stars, planets, and the Milky Way.