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.

    Have you ever thought of getting in touch with your inner child from time to time? Obviously some people are willing to pay big money for the chance to do so in a proper environment．A Brooklyn-based adult preschool is charging customers between $333 and $999 for the chance to act like a kid again．

    At Preschool Mastermind in New York adults get to participate in show-and-tell，arts-and-crafts such as finger paint，games like musical chairs and even take naps．The month-long course also has class picture day where the adults are expected to have a field trip and a parent day．

    30-year-old Michelle Joni Lapidos，the brain behind the adult preschool，studied childhood education and has always wanted to be a preschool teacher．She's always on the lookout for new ways to get people in touch with the freedom of childhood．A friend encouraged her to start the mastermind course instead．

    According to Candice，her blogger friend，Preschool Mastermind gives adults a chance to relearn and master the things that they failed to understand as children．“I realized all the significances of what we learn in preschool，”said founder Michelle Joni，“People come here and get in touch with their inner child．It's magical．We are bringing ourselves back to another place，another time with ourselves when we are more believing in ourselves，more confident and ready to take on the world．”

    “One person's here because they want to learn not to be so serious．”Michelle said．“Another's here to learn to be more confident．”She explained that most of the classes were planned．However，Joni added that while the planned activities were fun，it was often the spontaneous(自发的)moments that attracted students．“It's the things you don't plan for，the sharing between friends and learning from each other．''

    If you're encouraged by the tiny house movement and think 160 square feet is just enough for your needs, you may want to contact the Academy of Construction and Design (ACAD) at IDEA Public Charter School in northeast Washington.

    Students in the program built a micro house with a kitchen, a bathroom, a sleeping loft with space for a queen-size bed and a storage loft, all set on a trailer for mobility. The exterior of the house was part of a continuous living exhibit in 2015 and was moved to the IDEA campus so students could work with builders to complete the interior earlier this year.

    McMahon said the D. C. government's approval to push companies to hire District residents was at odds with the school system not preparing students for careers in construction, exploring or electrical work. McMahon gathered industry and community leaders to establish ACAD in 2005, and he said 100 percent of the companies he contacted responded positively to the idea, including major firms such as JBG, Clark Construction, Hines Construction and Boston Properties.

    “When students make the connection between what they are learning a potential career, their academics improve dramatically,” said Carol Randolph, chief operating officer of the D. C. Students Construction Trades Foundation. “Some of them who didn't think college was an option now have a better chance because their classes have become relevant to a job.”

    “We teach them life skills and explain that even if you start as a laborer, there are opportunities to move up quickly,” he said. “We rewrite the story for them and explain that they can work for a few years, make good money, get promoted, and start their own business or go to school with less debts.”

    “Parents and school advisor can be the biggest obstacles because of the negative idea of construction as a blue-collar career,” Karriem said. “I get middle-school advisor on board to talk about the opportunities this education provides. These kids are learning lifelong skills that can help them in other fields, provide them with income and allow them to take care of their homes.”

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    We humans spend about one-third of our lives asleep. This may sound like a lot of time, but it is not wasted. Sleep not only helps us stay healthy but it also helps our brains remember. Our brains need good sleep to remember what we do and learn during the other two thirds of our lives when we are awake.

    Researchers at the University of Wisconsin-Madison have found that sleep helps improve brain performance by shrinking(收缩)synapses in the brain. A synapse is the area where cells pass messages to other cells.

    Scientist Chiara Cirelli is a leader at the school's Center for Sleep and Consciousness. She told the reporter that sleep is when the human brain mixes information it has learned while awake into its general collection of knowledge. Meanwhile, the brain forgets unimportant details. This forgetting is important. It makes space for new learning and new memories.

    Cirelli said that the Centers research began with this hypothesis(假设): We sleep so that our brain can repair and refresh itself. She said the idea seems simple and reasonable. However, testing and discovering how it works has been extremely difficult.

    Synapses are only about 20-40 nanometers(纳米)wide. The team began their study by measuring the size of the synapses to look for changes in these already tiny spaces between nerve cells. Cirelli says the process(过程) is difficult because"all the actual measurements of the synapses have to be done by hand." The team had to wait until improvements in laboratory technology made it possible to see these tiny changes. A University of Wisconsin press release called the research a"huge job." Many research specialists worked for four years to photograph, rebuild and study certain areas of a mouse brain. The report also said the scientists measured 6,920 synapses.

    Cirelli says they found that our synapses shrink as our brains clean themselves during sleep. We wake up refreshed and ready to fill those synapses with new information. The research findings are the result of years of hard work at the University of Wisconsin Madison. The researchers published their findings in the journal Science.

    It's a little hard to figure out the rules for sure,  but the baby African buffalo( 水牛) seems to have the upper hand. The two stand a couple feet apart, staring at each other. Behind them, their mothers look on with the kind of indifference(不关心) of mothers  everywhere who see their kids playing a harmless game.

    The alarm went off about half an hour ago, the second time tonight. Here, one bell means “elephant”, two, “rhino” (犀牛), and three and four, 1 really can't remember for what, because when you're awoken by bells in the middle of the night, your first thought won't be “Animal! ”.But as soon as I realized it was the rhino alarm.

    I was running for the stairs. Yet I'm the only one watching the animals stare-down. Either everyone else died of a heart attack when the bells went off, or l was the only one in the entire hotel who didn't turn the alarm switch to off before going to bed.

    The Ark, a hotel shaped like the biblical ark(圣经的方舟) , lies in the highlands of Kenya's Aberdare National Park, about 100 kilometers north of Nairobi. At the Ark's prow(船首) are huge windows overlooking a waterhole. Earlier tonight, I'd watched a pack of wolves, buffalos and elephants. And now, at three or so in the morning, I'm down for rhino bells. The first time, 2.5 hours ago, it was a single black rhino, which came down, got a drink, and left. I'd have been sorry for the lost sleep.  I've already arranged with a guide to take me out at sunrise for the so-called “should never miss” bird-watching, where we'll get to see 30 species, but really, how many times in your life will you get to wake up and say, “Wow! Rhino!”? Isn't that the definition of a pretty good night? Last week we went from Uganda into Kenya.  Before I left home, 1 thought I'd be happy with ten elephants and five or six giraffes on the whole trip. I didn't dare to dream the rhino.

    There's a new frontier in 3D printing that's beginning to come into focus: food. Recent development has made possible machines that print, cook, and serve foods on a mass scale. And the industry isn't stopping there.

    Food production

    With a 3D printer, a cook can print complicated chocolate sculptures and beautiful pieces for decoration on a wedding cake. Not everybody can do that — it takes years of experience, but a printer makes it easy. A restaurant in Spain uses a Foodini to "re-create forms and pieces" of food that are "exactly the same," freeing cooks to complete other tasks. In another restaurant, all of the dishes and desserts it serves are 3D-printed, rather than farm to table.

    Sustainability(可持续性)

    The global population is expected to grow to 9.6 billion by 2050, and some analysts estimate that food production will need to be raised by 50 percent to maintain current levels. Sustainability is becoming a necessity. 3D food printing could probably contribute to the solution. Some experts believe printers could use hydrocolloids (水解胶体) from plentiful renewables like algae(藻类) and grass to replace the familiar ingredients(烹饪原料). 3D printing can reduce fuel use and emissions. Grocery stores of the future might stock "food" that lasts years on end, freeing up shelf space and reducing transportation and storage requirements.

    Nutrition

    Future 3D food printers could make processed food healthier. Hod Lipson, a professor at Columbia University, said, "Food printing could allow consumers to print food with customized nutritional content, like vitamins. So instead of eating a piece of yesterday's bread from the supermarket, you'd eat something baked just for you on demand."

    Challenges

    Despite recent advancements in 3D food printing, the industry has many challenges to overcome. Currently, most ingredients must be changed to a paste(糊状物) before a printer can use them, and the printing process is quite time-consuming, because ingredients interact with each other in very complex ways. On top of that, most of the 3D food printers now are restricted to dry ingredients, because meat and milk products may easily go bad. Some experts are skeptical about 3D food printers, believing they are better suited for fast food restaurants than homes and high-end restaurants.