How to remember your passwords

    Remembering and then forgetting your passwords can be a frustrating business, and one that contributes to more than half of calls made to helplines. {#blank#}1{#/blank#} Once you have reset your password, you're going to need to remember that one too. Follow our tips on breaking the password-frustration cycle.

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    We often create so many user IDs but there are only a small number of passwords that you really need to remember. It's important for you to remember your banking and email passwords, but do you really need to worry about your occasional eBay visit? If you can commit(交付) just a few to memory, you can hand the rest over to a password keeper to do the remembering for you.

Sign up for a password keeping service.

    {#blank#}3{#/blank#} You just need to encrypt(加密) your data and keep it in a safe server. Many password keepers require you to remember just one master password, which will give you access to the accounts you have chosen.

Write them down

    “Just keep them in a safe place, such as a locked box,” says Internet security blogger Bruce Schneider. {#blank#}4{#/blank#} Thus, it isn' t entirely discouraged and can be an efficient back-up plan when all else fails.

Work on your memory

    {#blank#}5{#/blank#} Practicing memory techniques or making certain lifestyle changes, including reducing stress, might just prevent you from having to make that frustrating password phone call ever again.

Everyone loves a hot shower, except maybe your skin and hair. As it turns out, hot water dries out skin and leaves hair dry and easily broken, Sejal Shah, MD (Doctor of Medicine) in New York City, told Women's Health. And if you dye (染)your hair, the color is likely to fade faster once the water gets steamy. To make matters worse, by making your skin lose natural oils, hot showers—above 99 degrees Fahrenheit—may bring about health problems. You may not like it, but the showers temperature that offers the greatest hair and skincare benefits is, well, cold.

Cold showers “strengthen the contractile fibers around pores(毛孔), muscles, and hairs which improves the firmness of skin,” says Carl Thornfeldt, MD with over 30 years of skin research experience. Though many people believe hot showers open and clear pores, it's actually wiser to close them. “Closing pores helps keep pollution from getting into the skin, at least temporarily,”

The benefits of cold showers are numerous, but surely we can't be expected to stand under cold water shivering every day especially in winter--not to mention that too cold (below the body's average temperature of 96.6 degrees Fahrenheit) is also bad. Fortunately, Dr. Thornfeldt recommends a happy medium. “The best solution is to take a warm, not too hot shower and then finish off with cold water for the last few seconds to still gain the rewards of the cold water,” he says.

That doesn't sound too unbearable. Considering the fact that our beloved, steamy showers may cause so much damage to skin and hair, it's best to switch to slightly warm temperatures to avoid losing natural oils and drying out, especially in winter when indoor heat is already sucking moisture(水分) out of skin. So, when the main part of an extremely comfortable warm shower is complete, finish off with a cool splash. Your hair and skin will thank you!

    Up to 90% of school leavers in major Asian cities are suffering from myopia — short-sightedness, a study suggests. Researchers say the “extraordinary rise” in the problem is being caused by students working very hard in school and missing out on outdoor light.

    Eye experts say that you are short-sighted if your vision is blurred(模糊的) beyond 2m. It is often caused by an elongation (拉伸) of the eyeball that happens when people are young. According to the research, the problem is being caused by a combination of factors — a commitment to education and lack of outdoor light.

    Professor Morgan who led this study argues that many children in South East Asia spend long hours studying at school and doing their homework. This in itself puts pressure on the eyes, but exposure to between two and three hours of daylight helps maintain healthy eyes.

    Cultural factors also seem to play a part. Across many parts of South East Asian children often have a lunchtime nap. According to Professor Morgan they are missing out on natural light to prevent short-sightedness.

    A big concern is the numbers of the students suffering from “high” myopia. One in five of these students could experience severe visual impairment(障碍) and even blindness. These people are at considerable risk-sometimes people are not told about it and are just given more powerful glasses-they need to be warned about the risk and given some self-testing measures so they can get to an ophthalmologist and get some help.

    For decades, researchers believed there was a strong genetic component to the condition. But this study strongly suggests an alternative view. “Any type of simple genetic explanation just doesn't fit with that speed of change; gene pools just don't change in two generations. Whether it's a purely environmental effect or an environmental effect playing a sensitive genome, it really doesn't matter, the thing that's changed is not the gene pool—it's the environment.”

    Do you ever wonder why trees begin to bud (发芽) earlier in some cities? Scientists finally found the answer but it's not very pleasant. New science suggests a relationship between light pollution and the timing when trees produce buds, which signals the arrival of the spring season.

    Light pollution is defined by the Lighting Research Center as the unwanted consequence of outdoor lighting such as street lights. Excessive (过多的) man-made light at night results in disturbed natural cycles, and also prevents the observation of stars and planets at night. But its effect on the environment goes beyond that.

    By studying some trees, researchers found out that trees that are more exposed to artificial lighting at night bud up to 7.5 days earlier than those at the natural nighttime setting. And they found out that light had a more significant effect than temperature when the buds came out. The early budding may cause problems for insects, which feed on leaves, and the birds which then feed on them in turn. Professor Richard French Constant, who helped lead the research, explained that more than the budding of trees, the study implies the danger to the balance of the ecosystem. “At the moment, caterpillars (毛毛虫) are timed to hatch to make the most of the opportunities to feed on freshly budded leaves, and birds hatch in time to feed on the young caterpillar,” he said.

    Migratory (迁徙的) birds are also negatively affected by light pollution. The glare might confuse them and make them lose their flying sense. The phenomenon might explain why some birds accidentally knock into buildings.

    Such results stress the need to pursue studies that aim to measure the effect of light pollution. If the issue were left to continue, it is estimated that by 2100, spring would begin almost a full month earlier than it does today.

On an autumn afternoon, a remote sheep farm in southern Greenland is quiet. The silence is abruptly broken when dozens of sheep come thundering across the hills overlooking the farm. Walking after them are Lars Nielsen and his 37-year-old son Kunuk Nielsen.

The Nielsen family has owned and run the farm since 1972. Kunuk says the summers now are longer than when he was a child and that drought has become a problem. The fields are not so green as those in the old days. He has to buy hay (草料) from European countries.

The effects of a warming climate are obvious on the land. While he intends to struggle on, his older brother Pilu has chosen a different path.

Pilu, 40, lives in Qaqortoq in the south of Greenland -- a town of about 3,000 people. Ten years ago, he got his helicopter pilot's license and is now part owner of a small company called Sermeq Helicopters. It caters to construction and telecommunication workers and an increasing number of foreign tourists.

Pilu says he loves his family's sheep farm. But he saw that warming temperatures were making remote areas of Greenland more accessible and wanted to look for other opportunities. His company's most popular tours include a visit to Greenland's glaciers.

The warming temperatures are also affecting traditional ways of life, particularly hunting. The sea ice is changing; it's becoming less so that hunting on ice becomes more difficult. When there's no sea ice, it's difficult to use dog sledges (雪橇), and the whole culture around having dogs and dog sledges and doing traditional hunting on the ice is sort of diminishing.

Besides, many Greenlanders, like Pilu, are leaving the countryside for towns and the capital city Nuuk, where opportunities are greater. A report found that Nuuk's share of Greenland's population grew from 17.2% in 1977 to 29.2% in 2014. If there were enough houses in Nuuk, the share would even be bigger.

At the beginning of the century there was a big farm called Hollywood Ranch. It was near Los Angeles in California. A few years later Hollywood was one of the famous places in the world. From the 1910s to the 1950s Hollywood was the film center of the world. Every family knew the names of its film stars — Charlie Chaplin, Grela Garbo, Bergman and hundreds more.

The reason why people went to Hollywood to make films was the sun. At first people made films in New York on the east coast of the United States. But then they heard about Los Angeles where there are 350 days of sun every year. As they made all the films by sunlight, the west coast was a much better place to work. Also near Hollywood you can find mountains and sea and desert. They did not have to travel far to make any kind of film.

When TV became popular, Hollywood started making films for television. Then in the 1970s they discovered people still went to the cinema to see big expensive films. After twenty years they are still making films in Hollywood and people watch them all over the world.