Most buildings are built to stand up straight, but these look as if they might fall over!

The church tower of Suurhusen

    Built in 1450, the 27-meter-high church tower lies in Suurhusen, Germany. It was built in wet land on foundations of oak tree trunks (树干). When the land was drained (排水) later, the wood broke down, causing one side of the tower to be a little lower than the other. In 1975, the tower became a real hazard and people were not allowed to enter until the foundations were made strong again. The lean (倾斜) of the tower is now about five degrees.

The Leaning Tower of Pisa

    The work of building the tower began in 1173, and was finally completed in 1372. In fact, it began to lean after just a couple of floors were built. And this condition continued in the centuries after its completion. The tower was finally closed to the public in 1990 after people failed to stabilize (使稳固) its foundations. In 2001, it was reopened after engineers removed soil from underneath its raised side. Now it leans just an angle of 3.97 degrees.

Capital Gate of Abu Dhabi

    Completed in 2011, the Capital Gate tower in Abu Dhabi was designed to lean eighteen degrees. The building stands next to the Abu Dhabi National Exhibition Centre and contains, among other things, a fine hotel with wonderful views of the harbour. Also known as the leaning tower of Abu Dhabi, the tower is one of the tallest buildings in the city.

Big Ben of London

    The building leans 0.26 degrees to the northwest. This is mainly caused by the engineering projects that have been carried out in the ground below it since the late 1800s. The tower, which has been continuously open since it was completed in 1858, has nowhere near the lean of the Tower of Pisa and is still completely safe to enter.

    University Room Regulations

    Approved and Prohibited Items

    The following items are approved for use in residential (住宿的) rooms: electric blankets, hair dryers, personal computers, radios, televisions and DVD players. Items that are not allowed in student rooms include: candles, ceiling fans, fireworks, waterbeds, sun lamps and wireless routers. Please note that any prohibited items will be taken away by the Office of Residence Life.

    Access to Residential Rooms

    Students are provided with a combination (组合密码) for their room door locks upon check-in. Do not share your room door lock combination with anyone. The Office of Residence Life may change the door lock combination at any time at the expense of the resident if it is found that the student has shared the combination with others. The fee is $25 to change a room combination.

    Cooking Policy

    Students living in buildings that have kitchens are only permitted to cook in the kitchen. Students must clean up after cooking. This is not the responsibility of housekeeping staff. Kitchens that are not kept clean may be closed for use. With the exception of using a small microwave oven (微波炉) to heat food, students are not permitted to cook in their rooms.

    Pet Policy

    No pets except fish are permitted in student rooms. Students who are found with pets, whether visiting or owned by the student, are subject to an initial fine of $100 and a continuing fine of $50 a day per pet. Students receive written notice when the fine goes into effect. If, one week from the date of written notice, the pet is not removed, the student is referred to the Student Court.

    Quiet Hours

    Residential buildings must maintain an atmosphere that supports the academic mission of the University. Minimum quiet hours in all campus residences are 11:00 pm to 8:00 am Sunday through Thursday. Quiet hours on Friday and Saturday nights are 1:00 am to 8:00 am. Students who violate quiet hours are subject to a fine of $25.

    On June 23, 2010, a Sunny Airlines captain with 32 years of experience stopped his flight from departing. He was deeply concerned about a power part that might run out of all electrical power on his trans-Pacific flight. Regardless of his concerns, Sunny Airlines pressured him to fly the airplane over the ocean at night. When he refused to put the safety of his passengers at risk, Sunny Airlines' Security removed him out of the airport, and threatened to arrest his crew if they did not cooperate.

    Besides that, five more Sunny Airlines pilots also refused to fly the aircraft, expressing their own concerns about the safety of the plane. It turned out the pilots were right: the power part was faulty and the plane was removed from service and finally fixed. Eventually a third crew operated the flight, hours later. In this whole process, Sunny Airlines pressured their highly experienced pilots to ignore their safety concerns and fly passengers over the Pacific Ocean at night in a plane that needed maintenance. Fortunately for all of us, these pilots stood strong and would not be frightened.

    Don't just take our word. Please research this yourself and learn the facts at www.SunnyAirlinePilot.org. Once you review this shocking information, please keep in mind that while their use of Corporate Security to remove a pilot from the airport is a new procedure, flight crews' lacking confidence is becoming common at Sunny Airlines, with recorded events occurring on a weekly basis.

    The flying public deserves the highest levels of safety. No airlines should maximize their gains by pushing their employees to move their airplanes regardless of the potential human cost. Sunny Airlines' pilots are committed to resisting any practices of damaging your safety for profits. We've been trying to deal with these problems behind the scenes for quite some time; now we need your help. Go to www.SunnyAirlinePilot.org to get more information and find out what you can do.

    What is the single most effective way to reduce greenhouse-gas emissions? Go vegetarian (素食)？ Replant the Amazon? Cycle to work? None of the above. The answer is: make air-conditioners better. On one calculation, replacing refrigerants (制冷剂) damaging the atmosphere would reduce total greenhouse gases equaling 90bn tonnes of CO₂ by 2050. Making the units more energy-efficient could double that. By contrast, if half the world's population gave up meat, it would save 66bn tonnes. Replanting two-thirds of tropical forests would save 61 bn tonnes. A one-third increase in global bicycle journeys, just 2.3bn tonnes.

    Air-conditioning is one of the world's great overlooked industries. Automobiles and air-conditioners were invented at roughly the same time, and both have had a huge impact on where people live and Work. Unlike cars, though， air-conditioners have drawn little criticism for their social impact, emissions or energy efficiency. Most hot countries do not have rules to govern their energy use. There is not even a common English word for “coolth” (the opposite of warmth).

    Yet air-conditioning has done more than most things to benefit humankind. Lee Kuan Yew, the first prime minister of Singapore, called it “perhaps one of the signal inventions of history”. It has transformed productivity in the tropics(热带地区)and helped turn southern China into the workshop of the World. In Europe, its spread has pushed down heat-related deaths to 10% since 2003, Men 70,000 people than usual, most of them elderly, died in a heatwave. For children, air-conditioned classrooms are associated with better grades at school.

    Environmentalists who call air-conditioning “a luxury we cannot afford” have half a point, however. In the next ten years, as many air-conditioners will be installed(安装)around the world as were put in between 1902(invention time)and 2005.Unless energy can be produced without carbon emissions, these extra machines will warm the world. At the moment, therefore, air-conditioners create a vicious cycle. The more the Earth warms, the more people need them. But the more there are, the warmer the world will be.

    Cutting the impact of cooling requires three things. First, air-conditioners must become much more efficient. The most energy-efficient models on the market today consume only about one-third as much electricity as average ones, Minimum energy-performance standards need to be raised raised, orintroduced in countries that lack them altogether, to push the average unit's performance closer to the standard of the best.

    Next, manufacturers should stop using damaging refrigerants. One type called hydrofluoro-carbons, is over 1,000 times worse than carbon dioxide when it comes to trapping heat in the atmosphere. An international agreement to knock out these pollutants will come into force in 2019.

    Last, more could be done to design offices, malls and even cities so they do not need as many air-conditioners in the first place. More buildings should be built with overhanging roofs or balconies for shade, or with natural ventilation (自然通风).Simply painting roofs white can help keep temperatures down. Providing indoor air-conditioned comfort need not come at the expense of an overheating world.

My dearest daughter,

    As I looked across at you sitting on the sofa watching The X Factor, I noticed that you are no longer a child, and that having just celebrated your 14th birthday, you are now a young woman starting a journey into becoming an adult woman. As I looked at you, I remembered myself at 14, and the vastly different places we are beginning this journey from.

    Your identity as a mixed-race young woman, with an English father and a Pakistani mother, has already influenced how you place yourself in this world. As yet, you are unaware of the personal struggles that I took at the age of 25 to marry. How it felt when my mother refused to come to my wedding. The sharp criticisms of the Asian community that such marriages do not work out and always end in divorce (离婚). The confidence I had to grow, as we chose to live in a multicultural community, as I refused to be shamed into living in the white suburbs (郊区).

    Then, at the age of 30, I became your mum with all the joys and struggles this brought, as I refused the Asian traditions for a new baby's arrival. From your birth, your life could not have been more different from mine. I was brought up on a council estate (地方政府建的住宅群), within a close extended Muslim family, through which poverty, racism and neglect were mixed. I was never given the freedoms or the opportunity to experience new things. Now, as I hear you play your piano, I am grateful that you have these chances.

    So many doors were closed to me as a young person, and as I fought for small steps of freedom, I soon learned that it was better to do what I wanted without the knowledge of my parents, and so lies and tricks became part of my life too. The pressures to obey, to be a "good Muslim" girl and keep the family honor, were choking. Behind closed doors at home, the neglect and abuse (虐待) took place. It was hidden, I felt the shame, lived with the fear and suffered together with my sister and two younger brothers. Oh, the power we thought our parents had over us! I was convinced that one day my father would indeed beat us so hard that leaving us for dead, he would, as his threats said he would, bury us in the large back garden, and tell the school he had taken us back to Pakistan for good. My sister and I longed for a different blue sky to live under.

    As a daughter of immigrant (移民) parents, I carried their hopes of a better education for their children—my own veins (血管) pulsing with the hard-work ethic (道德) and need to be grateful for the opportunity of a free education. And it was education that provided me with the strength to find my own blue sky. I fought to leave home to go to university at the age of 18, and never returned to live with my parents again.

    Now as you explore your mixed-race heritage, which I hope we have supported you to do with visits to Pakistan and ensuring you go to multi-cultural schools, I want you to take the very best of all that is Asian with you as you become a woman.

    The struggles of identity (身份) and belonging will come but I hope that we have given you a strong foundation from which to explore these struggles. All the chances and freedoms that I only dreamed of as a young woman, I have offered you. I have chosen a different path of loving you as my daughter, with an unconditional love that many consider "western".

    I want you to know that although your journey has been vastly different, I am excited as I watch you standing on the threshold (门槛) of becoming a woman for all the adventures and possibilities the future holds for you.

    May you fly your blue sky with grace, confidence and hope as you find your place in this beautiful and crazy world.

    Loving you now and always. Mommy

    Notre-Dame de Paris, a cathedral church in Paris, is the most famous of the Gothic cathedrals of the Middle Ages. For the French, it represents something immortal, ever- present and unchanging, like a mountain. Built over almost two centuries, the Notre-Dame is, as President Emmanuel Macron said, "where the French lived all their great moments". Soldiers prayed here before leaving for the Crusades; Napoleon Bonaparte was crowned here; it survived the French Revolution, two World Wars and the Nazi occupation. It is where men bend their knees to profess love and thousands of tourists take photos every day.

    A fire, whose cause was not identified yet, engulfed(吞没), on April 15th, the cathedral's upper structure. More than 400 firefighters took part in the 15-hour battle to control the blaze(火苗) that triggered sorrow over the globe. The extent of the damage is still unknown, but the fire destroyed much of the gothic cathedral's wood-timbered roof and spire(塔尖). The cathedral will certainly be restored (the French government promises), but the sight of flames bringing down the spire moved the world in a manner far exceeding its religious significance.

    French Culture Minister Franck Riester on Thursday said the government would draw all the consequences from the huge flames that destroyed the centuries-old Notre Dame Cathedral, adding measures to protect the national heritage were on the table. "Staff from the fire department, the culture ministry and the city town hall rushed to the Cathedral, when the fire started, to protect the main artworks that were inside. The artworks, which include relics such as the Christ's crown of thorns and French king Saint-Louis's 13th century tunic, were first moved to the city town hall and will now be transferred to the nearby Louvre Museum ." the minister told Le Parisian newspaper in an interview without giving details on the possible measures.