Join in the holiday fun at the powerhouse this month linked to our new exhibition, Evolution & Revolution : Chinese dress 1700s to now. DON'T FORGET our other special event, the Club Med Circus School which is part of the Circus! 150 years of circus in Australia exhibition experience !

    ◆ Chinese Folk Dancing: Colorful Chinese dance and musical performances by The Chinese Folk Dancing School of Sydney. Dances include: the Golden stick dance and the Chinese drum dance. A feature will be the Qin dynasty Emperor's court dance. Also included is a show of face painting for Beijing opera performances.

    Sunday 29 June and Wednesday 2 July in the Turbine Hall, at 11:30 am & 1:30 pm.

    ◆ Australian Chinese Children's Arts Theatre: Well-known children's play experts from Shanghai lead this dynamic youth group. Performances include Chinese fairy tales and plays.

    Thursday 3 to Sunday 6 July in the Turbine Hall, at 11:30 am & 1:30 pm.

    ◆ Chinese Youth League: A traditional performing arts group featuring performance highlights such as the Red scarf and Spring flower dances, and a musician playing Er Hu.

    Sunday 6 to Tuesday 8 July in the Turbine Hall, 11:30 am to 1:30 pm.

    ◆ Kids Activity: Make a Paper Horse: Young children make a paper horse cut-out. (The horse is a frequent theme in Chinese painting, indicating a kind of advancement. ) Suitable for ages 8-12 years.

    Sunday 28 June to Tuesday 8 July in the Turbine Hall, 12:00 pm to 1:00 pm.

    ◆ Club Med Circus School: Learn circus skills, including the trapeze, trampolining and magic. Note only for children over 5: There are 40 places available in each 1 hour session and these must be booked at the front desk, level 4, on the day.

    Tuesday 1 to Saturday 5 July at 11:30 am & 1:00 pm.

    Enjoy unlimited free visits and many other benefits by becoming a family member of the Powerhouse. Our family memberships cover two adults and all children under the age of 16 years at the one address. Members receive powerline, our monthly magazine, discounts in the shops and the restaurants, as well as free admission to the Museum. All this for as little as $50.00 a year! Call (02)9217 0600 for more details.

    There are two types of people in the world. Although they have equal degree of health and wealth and other comforts of life, one becomes happy, the other becomes unhappy. This arises from the different ways in which they consider things, persons, events and the resulting effects upon their minds.

    People who are to be happy fix their attention on the convenience of things. The pleasant parts of conversation, the well prepared dishes, the goodness of the wine, the fine weather. They enjoy all the cheerful things. Those who are to be unhappy think and speak only of the opposite things. Therefore, they are continually dissatisfied. By their remarks, they sour the pleasure of society, offend (hurt) many people, and make themselves disagreeable everywhere. If this turn of mind was founded in nature, such unhappy persons would be the more to be pitied. The intention of criticizing and being disliked is perhaps taken up by imitation. It grows into a habit, unknown to its possessors. The habit may be strong, but it may be cured when those who have it realize its bad effects on their interests and tastes. I hope this little warning may be of service to them, and help them change this habit.

    Although in fact it is chiefly an act of the imagination, it has serious results in life since it brings on deep sorrow and bad luck. Those people offend many others; nobody loves them, and no one treats them with more than the most common politeness and respect. This frequently puts them in bad temper and draws them into arguments. If they want to get some advantages in social position or fortune(财), nobody wishes them success. Nor will anyone start a step or speak a word to favor their hopes. If they bring on themselves public objections（反对）, no one will defend or excuse them, and many will join to criticize their wrong doings. These should change this bad habit and be pleased with what is pleasing, without worrying needlessly about themselves and others. If they do not, it will be good for others to avoid any contact(接触) with them. Otherwise, it can be unpleasing and sometimes very inconvenient, especially when one becomes mixed up in their quarrels.

    No one is sure how the ancient Egyptians built the pyramids near Cairo. But a new study suggests they used a little rock‘n'roll. Long-ago builders could have attached wooden pole s to the stones and rolled then across the sand, the scientists say.

     “Technically, I think what they're proposing is possible,” physicist Daniel Bonn said.

    People have long puzzled over how the Egyptians moved such huge rocks. And there's no obvious answer. On average, each of the two million big stones weighed about as much as a large pickup truck. The Egyptians somehow moved the stone blocks to the pyramid site from about one kilometer away.

    The most popular view is that Egyptian workers slid the blocks along smooth paths. Many scientists suspect workers first would have put the blocks on sleds(滑板). Then they would have dragged them along paths. To make the work easier, workers may have lubricated the paths either with wet clay or with the fat from cattle. Bonn has now tested this idea by building small sleds and dragging heavy objects over sand.

    Evidence from the sand supports this idea. Researchers found small amounts of fat, as well as a large amount of stone and the remains of paths.

    However, physicist Joseph West thinks there might have been a simpler way , who led the new study . West said , “I was inspired while watching a television program showing how sleds might have helped with pyramid construction . I thought , ‘Why don't they just try rolling the things?'“A square could be turned into a rough sort of wheel by attaching wooden poles to its sides , he realized . That , he notes , should make a block of stone” a lot easier to roll than a square”.

    So he tried it.

    He and his students tied some poles to each of four sides of a 30-kilogram stone block. That action turned the block into somewhat a wheel. Then they placed the block on the ground.

    They wrapped one end of a rope around the block and pulled. The researchers found they could easily roll the block along different kinds of paths. They calculated that rolling the block required about as much force as moving it along a slippery(滑的)path.

    West hasn't tested his idea on larger blocks, but he thinks rolling has clear advantages over sliding. At least, workers wouldn't have needed to carry cattle fat or water to smooth the paths.

    A new phone app uses shaking from smartphones to warn people about earthquakes. The new app is called MyShake, which is the work of four researchers at the University of California. Berkeley.

    Smartphones are equipped with accelerometers(加速器). MyShake uses phone accelerometers to measure seismic (地震的) activity. It has been programmed to know the difference between normal activity and earthquake movement. The software developers say their app is right 93 percent of the time. A smartphone sends seismic information to the app developers. If the developers receive several warnings from one area, it recognizes that an earthquake may be taking place or will take place soon. Using information sent from the app, the network then judges the location and strength of the quake in real time. MyShake can record 5.0 earthquake at distances of 10 kilometers or less.

    MyShake uses very little power, according to its developers. Only when seismic activity is sensed by the app does it become active and sends data to the network. The app works best when your phone is resting on a flat surface, like a table.

    The developers hope that MyShake can add to information collected by the U.S Geological Survey. That U.S agency has created the Earthquake Early Warning System, also known as the EEW. The EEW has used sensors for measuring quakes in many areas. In places where no such equipment exists, MyShake may be the only method of early quake detection (发现). The app also shows ways to stay safer during an earthquake. The developers say it will become more effective as more people use it.

    The developers say they hope to add a feature that will warn people about possible tsunami after an earthquake.

    Across Europe, where visitors can outnumber residents in the summer months, the complaints have started. Last week, in Barcelona, an open-top bus was spray-painted across its windscreen with the words “Tourism Kills Neighbourhoods”. The message is clear: such cities are under pressure. In tourists and residents' battle for shared spaces, local authorities are uncomfortably in the middle. The tourism is one of the largest employers in the world, with one new job created for every 30 new visitors to a destination—but at what cost to locals' quality of life?

    More people are travelling than ever before, and lower barriers to entry and falling costs mean they are doing so for shorter periods. The rise of “city breaks”—48-hour bursts of foreign cultures—has increased tourist numbers. “Too many people do the same thing at the exact same time,” says Xavier Font, a professor at the University of Surrey, “For locals, the city no longer belongs to them.”

    Compounding the problem is Airbnb, which has made tourists more casual in their approach to international travel, but added to residents' headaches. Those permanent citizens who share their apartment blocks with Airbnb hosts have lost their patience, “No longer do we have to share the streets with tourists, we have to share our own buildings!” To ease the congestion around the main attractions, many cities are taking immediate action. Venice is proposing a new concept of “detourism”: sustainable travel tips and alternative routes for exploring a different Venice. A greater variety of guidance for future visitors—ideas for what to do in off-peak seasons, for example, —can guide them from overcrowded landmarks. Repeat visitors have a better sense of the culture and it is much easier to integrate their behaviour with residents of the cities.

    “But the locals should learn to take tourists as a part of urban life. Tourists do not have to be considered passive players, but rather as visitors with rights and duties,” says Font, “Everyone has a part to play in promoting that change.”

    We often hear stories of animals rescuing people. But now someone has managed to return the favor.

    The event took place one snowy January morning Thomas Smith was walking his dog, Jack, in the park." As I was walking, I just saw Jack running onto the ice towards the ducks in the middle, and then he fell into the water and couldn't climb out, "said Smith. He realized he had no choice but to try and save his dog. "Someone else told me the lake was only one-meter deep, but it was at least twice that. I had to break my way through the 6-cm ice. Finally, I got Jack by the neck, and pulled him out. I don't think I have ever felt so cold by the time we got back to dry land. And when we got there, everyone was asking if Jack was okay no one was particularly worried, about me!"

    A neighbor, Julie Brown, saw it all happen. "The dog went onto an icy lake. All of a sudden, it started to go under. There were crowds of people around, and they were all shouting and screaming. Before I knew it, the owner Smith was in the water forcing his way through the ice. I can't begin to imagine how cold it was. Everyone was very nervous, but he was as cool as a cucumber he just crawled back out, put the dog on its lead, and went home."

    Many regard him as a hero, but Mr. Smith is quite laid-back about it. "Most dog owners are the same as me. They would do what I did without a second thought. But in the future, I'm going to make sure he's on lead near any ice ponds, Pets are members of our family. Would you do the same for them?