Australia has promised to introduce the most comprehensive （全面的） carbon trading program outside Europe in 2010. The government in Canberra plans to cut greenhouse gas emissions (排放) by at least five percent by 2020, but it could make bigger reductions if other countries agree to tougher targets.

    The Australian government warns that without tough environmental measures the country could lose key industries and jobs. Climate Change Minister Penny Wong says the economy is under threat and decisive action is needed.

    Central to the government's climate change plan is a carbon emissions trading program that will be introduced within two years. It would involve one thousand of the nation's biggest companies and would cover about three-quarters of Australia's greenhouse gas emissions.

    Many scientists believe that greenhouse gases, such as carbon dioxide and methane, contribute to global warming. Many of them are released by burning fuels such as coal and oil.

    Companies will be required to buy permits for each ton of carbon they emit, although big polluting exporters will receive up to 90 percent of their carbon licenses free.

    Many business leaders want the government to delay the plan because of the current global financial crisis, which is slowing the Australian economy. Peter Anderson from the Australian Chamber of Commerce and Industry says it is irresponsible to bring in a carbon trading plan now.

    Environmentalists, on the other hand, say Prime Minister Kevin Rudd has not properly addressed the threat of climate change. Activists had sought a minimum emissions cut of 25 percent.

    Instead, the Rudd government aims to cuts carbon emissions by at least five percent of 2000 levels by 2020. That amount could rise to 15 percent, if future global agreements set such a target.

    Ray Nias of the environmental group WWF says Australia will pay the price for low targets. “This is a deeply, deeply disappointing target,” Nias said. “It commits Australia to long-term climate change. It will make Australia's ability to negotiate (协商) global agreements very, very difficult. It is much lower than even we had imagined.”

    Australia has one of the highest per-person greenhouse emissions rates in the world because of its reliance on coal for electricity.

    Some scientists warn that the vast, dry Australian continent, which has been suffering a series of droughts in recent years, could be one of the region's hardest hit by global warming.

    ARNOLD Schwarzenegger is back, once again taking on his iconic killer robot role, the T-800, in August's new movie Terminator Genisys. While the T-800 model—even if it can be evil—has a fond place in moviegoers' hearts, the reality of autonomous machines is no joke, according to scientists.

    Autonomous weapons use artificial intelligence (AI) to choose targets without human help. They were described as “the third revolution in warfare, after gunpowder and nuclear arms” in an open letter signed by over 1,000 important technology figures in July. The list included British scientist Stephen Hawking and Apple co-founder Steve Wozniak. They asked governments around the world to ban autonomous weapons, warning that killer robots could start ethnic cleansings and an arms race.

     “They will look like tanks. They will look like battleships. They will look like jet fighters,” UK robotics professor Noel Sharkey told CNET, a leading technology website.

    But unlike these machines, which require a human hand in their action, so-called “killer robots” would have some decision-making abilities and the ability to act on their own.

     “If any major military power pushes ahead with AI weapon development, a global arms race is almost inevitable,” said the letter released at the 2015 International Joint Conference on Artificial Intelligence in Buenos Aires, Argentina.

    The idea of an automated killing machine was made famous by Schwarzenegger's first Terminator movie in 1984. While no red-eyed robots have been sent after human beings, the idea of AI being used as a weapon has gotten much more likely in the years ever since. The US military is already developing autonomous flying vehicles that can carry out all the steps of a strike mission without a human controlling them, according to a May report in Nature magazine.

    Scientists have even painted a destructive picture of autonomous weapons falling into the hands of terrorists or warlords hoping to carry out ethnic cleansings.

     “The development of full artificial intelligence could lead to the end of the human race,” Hawking said to the BBC in 2016.

Authorities are gradually waking up to the risk of robot wars. Last May, for the first time, the United Nations brought governments together to begin talks on autonomous weapons systems.

    Still, a ban on autonomous weapons is “easier said than done”, commented The Guardian. The dual (双重的) uses of the AI technology—for harm and for good—is difficult to manage. This is because the exact same technology can be used in a wide range of ways, the paper said.

    There are various ways in which to read body language so that you can understand how someone is feeling. Reading emotional clues（线索）is one of them.

    Crying is considered to be caused by an explosion of emotion in most cultures. Oftentimes crying is considered a sign of sadness, but crying can also be an expression of happiness. Crying can also come about through laughter and humor. Thus, when judging crying, you'll need to look for other signs to determine the meaning of the crying. Crying can also be forced in order to gain sympathy or to cheat others. This practice is known as “crocodile tears”, an expression that draws on the wrong idea that crocodiles “cry” when catching prey（猎物）.

    Signs of threat include v-shaped eye brows, wide eyes, and an open or down-turned mouth. In a similar way, Arm tightly crossed over the other is a common sign that the person is angry and is closing himself off to you.

    When people show anxiety, they display increased facial movements, and their mouth made into a thin line. Individuals who are anxious may also play with their hands, unable keep them in one spot Anxiety can also or have nervous legs. be conveyed when people seemingly unconsciously（无意识地）tap their feet or have nervous legs.

    Embarrassment can be expressed by turning the eyes or shifting them away, turnip of the head and controlled or even tense smiles. If someone looks down at the floor a lot, they are probably shy, afraid, or embarrassed. People also tend to look down when they are upset, or trying to hide something emotional. People are often thinking and feeling unpleasant emotions when they are in the process of staring at the ground.

    There are also some signs of pride. People show pride by displaying a small smile, holding their head backward, and putting their hands on their hips.

    Chinese high school students have the longest study hours compared to their peers (同龄人) in Japan, the US and the Republic of Korea, a survey conducted by the four countries said.

    The survey, released by the China Youth and Children Research Center (CYCRC) on Monday, was jointly conducted with institutions in the four countries in September—October of 2008. It covers nearly 4, 000 students in senior high schools and vocational high schools in the four countries.

    About 78.3 percent of Chinese students said they spend more than eight hours at school and 56.7 percent said they study at least two more hours each day at home. By contrast, only 24.7 percent of their peers in the US, 20.5 percent in Japan and 15.4 percent in Korea study more than two hours after school.

    Around 60 percent of all students surveyed said their burden for studies was the heaviest; however, the Japanese felt their burden was the worst with respondents (应答者) reaching 79.2 percent.

    Among the five biggest headaches for young people in the four countries were: over—scheduling ranked first, followed by a boring leisure life, unsatisfied appearance, little time for exercise and making friends, and no spare money.

    "Moderate (适度的) study pressure can better drive students to develop, however, too much will squeeze (挤) their development space, and can even cause harm to their physical and psychological health," the survey said.

    "Balancing their studies and all-round development is a very important task," it said.

    The National Beekeeping Centre Wales is a free attraction in the countryside that teaches children about the importance of honeybees – with the chance to try lots of local honeys.

    This friendly visitor centre is a supporter of Welsh honeybees, which are increasingly under threat from climate change and loss of wildflower meadows. It raises visitors' awareness of environmental issues and shows the 4,000-year history of beekeeping and honey-making from the ancient Egyptians to the Romans. A Hive Aid scheme lets you adopt a beehive (from £50 per person), and regular courses (from £60 per person) train new generations of beekeepers.

Fun fact

    Bees pollinate about a third of everything we eat and play an important role in sustaining our ecosystems. In economic terms, honeybee pollination could be worth up to £200m to the UK alone.

What about lunch?

    Next door is the Furnace Tearoom, part of the Bodnant Welsh Food Centre, which serves light bites – wraps (卷饼), fruit salads (£7) and coffee. And the nearby Pavilion Restaurant at the National Trust's Bodnant Garden has cooked food, including baked potatoes (£5) and daily specials such as local casseroles (焙盘) with bread rolls (£6), plus coffee and cakes.

Exit through the gift shop

    There is a range of bee-themed gifts in our gift shop, including bee toys (£2), wooden honey candy (£2) and a selection of honeys all made by Welsh producers (£5). The bestselling Bodnant honey (£8) goes fast.

Getting here

    We are located just off the A470 on the Bodnant Estate in the Conwy Valley, and 10 minutes from the A55 north Wales coast road. Follow the brown signs just after Bodnant Gardens.

Value for money

    Visits and activities for kids are free, though donations are welcome. Taster days (from £60) and the weekend beekeeping course (£80 per person) are held at Abergwyngregyn village, 10 miles west down the A55.

Opening hours

The Visitor Centre opens daily from 10 am — 4pm but it is volunteer-run, so phone ahead to check. Expect lots of fun activities around the annual Conwy Honey Fair.

This was no ordinary class. The students who came together were all science or engineering professors at Cornell University. They had interrupted their research to accept an invitation to take part in an unusual experiment: "an interesting week of poetry". This class was part of a study to answer the questions: Why is science difficult for many non-science students? What can teachers learn about teaching if they take a class that is not in their field? 

The students in the poetry class listened to lectures and took notes. They had reading tasks and had to write three short papers. All students noticed one thing—the importance of spoken words. In science and engineering classes, the instructors put tables and drawings on the blackboard. But in this poetry class, the instructors just talked. They didn't write anything on the board.

The scientists and engineers noticed one similarity between science and poetry. In both subjects, students need to find layers of meaning. Some layers are simple, clean, and on the surface;   other layers are deeper and more difficult. This search for different levels of meaning doesn't happen much in undergraduate science classes, but it is important later, in a graduate school. And it is always important in humanities (人文学科).

Both the poetry instructors and their students learned something about teaching from this experience. One poetry instructor, for example, now sees the importance of using careful, clear definitions when he explains a poem. He also plans to be more informative as he teaches. Most of the scientists agreed on several points. Firstly, humanities classes might help science students to see patterns and decide which information is important. Secondly, the poetry class was fun. One engineer decided, "We need to change the way we teach engineering to make it an enjoyable experience for students."

But perhaps the most important result of the experience was this: all of the professors began to think about how they teach and how they can teach better.