Several safari camps operate as the base for this adventure, providing unique rides twice a day to explore deep into the delta. The camps have excellent horses, professional guides and lots of support workers. They have a reputation for providing a great riding experience.

              The morning ride, when the guides take you to beautiful, shallow lakes full of water lilies, tends to be more active. It is unlike any other riding experience. With rainbows forming in the splashing water around you and the sound of huge drops of water bouncing off your body and face. It is truly exciting. You are very likely to come across large wild animals, too. On horseback it is possible to get quite close to elephants, giraffes and many other animals. The sense of excitement and tension levels rise suddenly though, as does your heart rate, as you move closer to them.

              In the evening, rides are usually at a more relaxed and unhurried pace. With golden light streaming across the grassy delta and the animals coming out to eat and drink. Sedate though they are, rides at this time of day are still very impressive. As the sun's rays pass through the dust kicked up by the horses, the romance of Africa comes to life.

              Back at the camp you can kick off your boots and enjoy excellent food and wine. Looking back on your day, you will find it hard to deny that a horseback Safari is as close as you will ever come to answering the call of the wild.

    Norway — Ten Chinese college students arrived at the country's Arctic（北极的） research base, the Yellow River Station, on Friday.

    On Saturday, the students are expected to witness the end of four months of darkness in the area, as the sun makes a rare appearance.

    During their four-day stay at the station, the students will meet and learn from some of China's leading polar researchers. They were welcomed at the station yesterday by its director, He Jianfeng, who is an expert on marine micro-ecosystems.

    The students will also visit the German and Norwegian stations and meet researchers there.

    As for entertainment, the visitors will get the chance to play ice hockey at the world's most northerly stadium.

    Among the visitors is Zheng Li, a student majoring in telecommunications at Dalian Marinetime University.

     “It is so exciting to see how the Chinese researchers work in the world's most northerly laboratory,” she said.

     “This opportunity is precious. Most people will never get the chance to travel so far from home and visit such an amazing place. It's a once-in-a-lifetime thing.”

    Wu Jinyou, head of the Polar Research Institute of China, and the group's leader, said, “I hope the students have not only a field trip to the Yellow River station, but are also touched by the devotion and spirit of the Chinese researchers here. I also expect in the future, some of them will choose to devote themselves to polar research and maybe even work with us.”

    The students have been in Norway since February 28, and were given Arctic training before moving to the station.

    The Arctic expedition is one of the several international cooperation and exchange activities forming the China Program for International Polar Year (2007- 2008). It was launched last March.

(China Daily, Xinhua News Agency, March 8, 2008)

    All too often, a choice that seems sustainable(可持续的)turns out on closer examination to be problematic. Probably the best example is the rush to produce ethanol(乙醇) for fuel from corn. Corn is a renewable resource —you can harvest it and grow more, almost limitlessly. So replacing gas with corn ethanol seems like a great idea. 

    One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol more sustainable than gas generally, but that's not the end of the problem. Using corn to make ethanol means less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the fallow land –including, in some cases, rain forest in places such as Brazil—into farmland, which in turn gives off lots of carbon dioxide (CO) into the air. Finally, over many years, the energy benefit from burning ethanol would make up for the forest loss. But by then, climate change would have progressed so far that it might not help.

    You cannot really declare any practice “sustainable” until you have done a complete life-cycle analysis of its environmental(环境的) costs. Even then, technology and public keep developing, and that development can lead to unforeseen and undesired results. The admirable goal of living sustainably requires plenty of thought on an ongoing basis.

    A car dealership in my hometown of Albuquerque was selling six to eight new cars a day. I was also told that 72 percent of this dealership's first-time visitors returned for a second visit.

    I was curious. How does a car dealership get 72 percent of its first-time visitors to return? And how can they sell six to eight cars a day in a declining car market?

    When I walked into Saturn of Albuquerque that Friday, the staff there didn't know me from Adam; yet they shared with me their pricing policy, the profit margin on every model, and staff income. They even opened their training manuals for my review and invited me back on Saturday if I wanted more information.

    On Sunday, the day after my second visit to the Saturn store, my wife, Jane, and I were walking as we frequently do. On this particular June morning, Jane gently slipped her hand in mine and said tenderly, ＂I don't know if you remember, but today's my fifth anniversary of being cancer-free.＂ I was surprised, partially because I was embarrassed that I had forgotten and, partially because.... Well, I didn't know what to do with Jane's information.

    The next day, Monday, Jane went off to work teaching school. Still not knowing what to do to mark this special occasion, I did the most impetuous thing I've ever done in my life: I bought a new Saturn. I didn't pick the color or the model, but I paid cash and told them I'd bring Jane in on Wednesday at 4:30. I told them why I was buying the car.

    On Tuesday, it dawned on me that Jane always wanted a white car. I called the sales consultant at Saturn, and I asked him if he had anything white in the store. He said he had one left but he couldn't guarantee it'd still be available on Wednesday at 4:30 because they were selling so fast. I said I'd take my chances and asked him to put it in the showroom.

    Wednesday came. Unexpectedly, someone in our family was admitted to the hospital. So, it wasn't until 9:30 Saturday morning when we finally made our way to the Saturn store. Jane had never been in a Saturn store. When we went through the front door, the Lord took control of her feet and her mouth. She saw that little white Saturn coupe all the way across the showroom floor. She quickly passed a multi-colored sea of automobiles, sat in the little white Saturn and said, ＂Oh, what a pretty little car. Can I have a new car?＂ I said, ＂No. Not until our son graduates from college.＂ She said, ＂I'm sick and tired of driving that old Dodge, I want a new car.＂ I said, ＂I promise, just three more semesters and he'll be out.＂

    Next, Jane walked around to the front of the car. As she looked it over, she let out the most blood-curdling, shrill scream I'd ever heard in 29 years of marriage.

    Now, before I tell you why Jane screamed, let me tell you what the sales consultant had done. He had ordered a large, professionally engraved sign (white letters on blue). The sign stood alone on the hood of the little white Saturn coupe. It said ＂Congratulations, Jane. This car is yours. Five years cancer-free. Let's celebrate life. From Team Saturn＂ Every employee at Saturn of Albuquerque had signed the back of that sign.

    Jane saw it, screamed, collapsed in my arms and cried loudly. I didn't know what to do. I was in tears. I took out my invoice (发票) from the previous Monday, pointing to the white coupe, said, ＂No, honey, this car isn't yours. I bought you this one.＂ I tapped the invoice with my index finger. Jane said, ＂No, I want this one right here.＂

    While this conversation was going on, there was no one in the store. The sales consultant had arranged it so that we could share the moment alone. Even so, it's impossible to have a lot of privacy when so many people are standing outside the showroom windows looking in. When Jane screamed and collapsed in my arms, I saw everybody outside applaud and begin to cry.

    There are many reasons why people can't get a good night's sleep and as with any other health conditions, things are not likely to improve until you find a way to break the cycle.

    These are some of the main factors that need to be addressed.

    Worry and stress

    We have all been kept awake by many factors that cause worry and stress in our lives. Money problems, relationship issues and work stresses can have you sitting up all night. A useful habit is to download your thoughts at the end of the day. Keep a pen and paper next to your bed and before you go to sleep, write down your thought and worries, create a to-do list for the following day or set down solutions and ideas that relate to work.

    Diet and eating patterns

    What and when you eat can have a major impact on your ability to sleep. Eating too late or indulging in a rich or spicy meal can keep you awake. These foods take a long while to digest and the after effects of indigestion and heartburn are not going to set you up well for a good quality sleep.

    A research suggests that both calcium and magnesium may be linked to poor sleep. Even low intakes of magnesium found in green vegetables, beans, nuts and seeds have been shown to make it harder to stay asleep. Calcium is found in dairy foods, soybeans and green vegetables and low levels have also been shown to make it more difficult to nod off.

    Alcohol and caffeine

    Tea, coffee and energy drinks contain caffeine that helps to stimulate the nervous system and make you more alert, which is great if you need a pick-me-up. Dosing up on caffeine during the day can affect your ability to sleep later on in the evening. Try limiting your intake of caffeine to the morning and switch to decaffeinated options such as herbal teas. Alcohol is a double-edged sword when it comes to sleep. While a little may help to induce slumber, even in small amounts it can cause fragmented sleep patterns.

    Bedroom environment

    “Your bedroom should be dark once the lights are switched off because melatonin, a sleep-regulating hormone, is very light-sensitive. Maintaining the right temperature can also help with sleep as a room that is too hot may prevent your core temperature from going down, which is essential for switching on the sleep mechanism within the body.

    Artificial intelligence can predict when patients with a heart disorder will die, according to scientists.

    The software learned to analyze blood tests and scans of beating hearts to spot signs that the organ was about to fail. The team, from the UK's Medical Research Council, said the technology could save lives by finding patients that need more aggressive treatment. The results were published in the Journal of Radiology.

    According to the researchers, high blood pressure in the lungs damages part of the heart, and about a third of patients die within five years after being diagnosed. There are treatments: drugs, injections straight into the blood vessels, a lung transplant. But doctors need to have an idea of how long patients might have left, in order to pick the right treatment.

    The software was given scans of 256 patients' hearts, and blood test results. When this data was combined with eight years of patient health records, the artificial intelligence predicted when patients would die.

    The software could look about five years into the future. It correctly predicted those who would still be alive after one year about 80% of the time. The figure for doctors is 60%.

    The team now want to test the software works in other patients in different hospitals before assessing whether it should be made widely available to doctors. The researchers also want to use the technology in other forms of heart failure, such as cardiomyopathy, to see who might need a pacemaker or other forms of treatment.

    Dr Mike Knapton, from the British Heart Foundation, said, "This exciting use of computer software in medical practice will help doctors in the future to make sure that patients are receiving the correct treatment before the condition deteriorates and leaves them needing a lung transplant. The next step is to test this technology in more hospitals with heart disease."