As they migrate(迁移), butterflies and moths(飞蛾) choose the winds they want to fly with, and they change their body positions if they start floating in the wrong direction. This new finding suggests that insects may employ some of the same methods that birds use for traveling long distances. Scientists have long thought that insects were simply at the mercy of the wind.

    Fascinating as their skills of flight are, migrating behavior has been difficult to study in insects because many long distant trips happen thousands of feet above ground. Only recently have scientists developed technologies that can detect such little creatures at such great heights.

    To their surprise, though, the insects weren't passive but active travelers on the winds. In autumn, for example, most light winds blew from the east, but the insects somehow sought out ones that carried them south and they positioned themselves to navigate(导航) directly to their wintering homes.

    Even in the spring, when most winds flowed northward, the insects didn't always go with the flow. If breezes weren't blowing in the exact direction they wanted to go, the insects changed their body positions to compensate(抵消). Many migrating birds do the same thing.

    The study also found butterflies and moths actively flew within the air streams that pushed them along. By adding flight speeds to wind speeds, the scientists calculated that butterflies and moths can travel as fast as 100 kilometers an hour. The findings may have real-world applications.

    With climate warming, migrating insects are growing in number. Knowing how and when these pests move could help when farmers decide when to spray their crops.

    Global warming threatens to hold back human progress, and make unachievable all UN targets to reduce poverty, according to some of the world's leading international and development groups.

    In a report published today, Oxfam, Greenpeace and other groups say rich governments must immediately address climate change to avoid even “unbearable levels” of worldwide poverty.

     “Food production, water supplies, public health and people's livelihoods are already being damaged and weakened,” the report says. “There is no approach possible. The world must meet its commitments to achieve poverty reduction and also deal with climate change, which are closely linked.”

    The report, which draws on UN predictions of the effects of climate change in poor countries over the next 50 years, says poor countries will experience more flooding, declining food production, more disease and the extinction of entire eco-systems on which many of the world's poorest people depend.

     “Climate change needs to be addressed now. The poor will bear the great consequence of it. The frontline experience of many of us working in international development indicates that communities are having to fight more extreme weather conditions.”

    Climate change will cause great damage to agriculture and water supplies and will increase diseases. “By 2025 the number of the world's population living in countries of significant water stress will almost double, to 6 billion people. Tropical (热带的) and sub-tropical areas will be hardest hit — those countries already suffering from food shortage”.

    Poor countries mostly do not need hi-tech solutions, but would most benefit from education, research and being shown how to farm better. The report says unchecked global warming, more than wars or political upheaval (政变), will displace millions of people and unsettle many countries.

    Sydney Trains is one of the most economical, reliable and convenient ways to travel throughout Sydney and its surrounds.

    Our network, the NSW Trains Intercity, covers suburban Sydney and extends to the Hunter, Central Coast, Blue Mountains, Southern Highlands and South Coast regions.

    The network is made up of several color-coded lines. Trains from different lines can share the same platform, so check display screen and listen to announcements.

    Ticket prices are generally based on the distance traveled. You can visit transportnsw. Info for details.

    Getting to the City.

    In Sydney, if you're near a train station, you're on your way to the city. Every rail line leads directly or indirectly to the City Circle. It's the loop around the central business district of Sydney. Most City stations are underground so look out for the sign on street level.

    Automatic ticket gates

    Large stations have automatic gates for entry to, and exit from, the station. If you have an Opal card or a ticket which has a magnetic stripe you must use the automatic gates. You may use the wide gate for wheelchair, pram or luggage access. Station staff will assist you.

    Night Ride buses

    Most trains do not operate between midnight and 4:00 a.m. For your convenience a special Night Ride bus service is available between these hours on most Sydney suburban lines.

    Track work

    In order for the tracks to the maintained, we sometimes have to replace train with buses, particularly at weekends, Please check the track work section for the latest service alterations on your line.

    Nowadays there is less and less contact between the old and the young. There are many reasons for this, but the result is the same: increasing numbers of children without grandparents and old people who have no contact with children. And more old people who are lonely and feel use- less, along with more and more families with young children who desperately need more support. It's a major problem in many societies.

    That's why intergenerational programmes, designed to bring the old and the young together, are growing in popularity all over the world, supported by UNESCO and other local and international organisations. There are examples of successful initiatives all over the world. Using young people to teach IT skills to older people is one obvious example. Using old people as volunteer assistants in schools is another, perhaps reading with children who need extra attention.

    One successful scheme in France is combining a residential home for the elderly with a creche/nursery school in the same building. The children and the residents eat lunch together and share activities such as music, painting, gardening and caring for the pets which the residents are encouraged to keep. In the afternoons, the residents enjoy reading or telling stones to the children and, if a child is feeling sad or tired, there is always a kind lap to sit on and a cuddle (依偎). There are trips out and birthday parties too.

    The advantages are enormous for everyone concerned. The children are happy because they get a lot more individual attention and respond well because someone has lime, for them. They also learn that old people are not different or frightening in any way. And of course, they see illness and death and learn to accept them. The residents are happy because they feel useful and needed. They are more active and more interested in life when the children are around and they take more interest in their appearance too. And the staff are happy because they see an improvement in the physical and psychological health of the residents and have an army of assistants to help with the children.

    It is often necessary to release a fish, that is, set it free after catching, because it is too small, or you just don't want to take it home to eat. In some cases, releasing fish is a good measure that will help keep fish variety and build their population size. The Department of Game and Inland Fisheries (DGIF) encourages fishermen who practice catch-and-release fishing to use a few simple skills when doing so. The advice provided below will help make sure that the fish you release will survive to bite again another day.

    —When catching a fish, play it quickly and keep the fish in the water as much as possible. Don't' use a net in landing the fish and release it quickly to prevent it from dying.

    —Hold the fish gently. Do not put your fingers in its eyes. Don't wipe the scales (鱼鳞) off the fish because it might cause it to develop a disease and reduce its chance of survival.

    —Remove your hook (鱼钩) quickly. If the hook is too deep or hooked in the stomach, cut the line and leave the hook in. The hook left inside will cause no serious problem to the fish.

    —Take good care of the fish by moving it gently in water. Release the fish when it begins to struggle and is able to swim.

    —Do not hold fish in a bucket or some other containers and later decide to release it. If you are going to release a fish, do so right away.

    With a little care and by following the suggestions given above, you can give the released fish a better chance of survival.

    Neither style of thinking is better or worse than the other; they're just different, as Professor Ankush Chopra explains. To be a great artist, musician, or big-picture thinker, holistic thinking is important—it's about context, and intuition (直觉) is important. Many careers like those in science or law, reward analytic thinking, which looks at parts and units, and is specific and logical. Of course, the most successful people will be able to do both kinds of thinking, though generally holistic thinking, linked to creativity, is more difficult to teach than analytic thinking.

    So those people who are analytic thinkers will see a price of $1.99 by looking at the single numbers, and will prioritize the first number when it comes to price. "Holistic thinkers tend to view all price numbers as a whole and are  less likely to be affected by the nine-ending price effect," Lingjiang Lora Tu, Ph. D. , professor of marketing at Baylor and  a study's lead author, told Phys. org.

    However, that the type of thinking allows holistic thinkers to see the whole rather than the parts goes out the window when they're stressed or distracted (分心的).

    "Our findings suggest that regardless of consumers' thinking style, nine-ending prices are most likely to be effective in situations that overuse consumers' resources, such as when shoppers are time-pressured at the checkout counter or distracted by background music or occupied with an interactive product demonstration," Tu said.

    This study was done with the idea that marketers should know about these differences in thinking style and keep them in mind when they're pricing things for different types of people. But anyone who buys things can benefit too, by figuring out what kind of thinker you are, and then keeping that in mind when the signs show "sale" with a loud noise!—and reminding yourself that nobody makes the best decisions when they're distracted.