Christian Eijkman, a Dutch doctor, left the Netherlands for the island of Java. Many people on the island had a disease called beri-beri. He was going there to try and find a cure.

    At first, Eijkman thought some kind of germ (细菌) caused beri-beri. He raised some chickens. He didn't eat them, but made experiments on them. The local people were quite surprised at that. One day he noticed that his chickens became sick when they were fed the food most Javanese ate — refined white rice (精炼米). When he fed them with unrefined rice, also known as brown rice, they recovered. Eijkman realized that he had made an important discovery — that some things in food could prevent disease. These things were named vitamins. The Javanese were not getting enough vitamins because they had actually removed the part that contains vitamins. Later, other diseases were also found to be caused by the lack of vitamins in a person's food.

    Today many people know the importance of vitamins and they make sure they have enough vitamins from the food they eat. If they don't, they can also take vitamin pills.

    A warm drink of milk before bed has long been the best choice for those wanting a good night's sleep. But now a study has found it really does help people nod off-if it is milked from a cow at night.

    Researchers have discovered that “night milk” contains more melatonin(褪黑激素), which has been proven to help people feel sleepy and reduce anxiety.

    The study, by researchers from Seoul, South Korea, involved mice being fed with dried milk powder made from cows milked both during the day and at night.

    Those given night milk, which contained 10 times the amount of melatonin, were less active and less anxious than those fed with the milk collected during daytime, according to the study published in The Journal of Medicinal Food.

    Night milk quickened the start of sleep and caused the mice to sleep longer.

    While the effect of cows milk harvested at different time has not been tested on humans up to now, taking melatonin drugs has been suggested to those who are struggling to fall asleep at night.

    Previous studies have also indicated that milk can be excellent for helping sleep because of the calcium content, which helps people to relax.

    Milk is also sugar-free and additive-free with nutritionists recommending skimmed milk as the best choice before bed as it is the least fattening. The more fat you take in before bedtime, the greater burden you will put on your body at night.

    Welcome to Orlando! It has a host of attractions and activities. Ready to join the party and plan a visit to O-Town? Just print out our list that suits your style.

    Universal Orlando's Islands of Adventure

    The addition of The Wizarding World of Harry Potter was among the list of must-visits for theme park enthusiasts. Each of the park's “islands” — Toon Lagoon, Jurassic Park, and The Lost Continent — has unique appeal in the form of rides and interactive attractions. (407-363-8000)

    Gatorland

    It bills itself as “Orlando's best half-day attraction”, for in a city people are limited by their time and money. Catch Gatorland's animals and handler(驯化) shows in the afternoon. There's a nighttime run as well, including the Gator Night Shine and various activities. Gatorland ranks as a comparative theme-park bargain. (407-855-5496)

    Aquatica

    One of the city's most unique water parks, Aquatica is a fantastical world of twisting, turning rides and sparkling white sand beaches. And if you enjoy a side of terror with your water-park fun, be sure to check out Ihu's Breakaway Falls. This towering slide is an eight-story mind-bender of a plummet(垂直落下) that is not for the weak heart. The less exciting will still find plenty of fun splashing from one giant wave pool to another or drifting down the lazy river through a world of unusual fish. You can also watch the black-and-white Commerson's dolphins underwater. (407-351-3600)

    Warbird Adventures

    Few attractions are more hands-on historic than Warbird Adventures, which offers thrill-seekers the opportunity to fly like the hero aces of World War II in the North American T-6 Texan. Flights range from 15 minutes to an hour. A visit to the nearby Kissimmee Air Museum is a wonderful way to round out the experience. (407-870-7366)

    26-year-old Anna Cherdantseva, from the city of Ufa in Russia, is a full-time employee of a furniture company, spending up t0 10 hours every day trying out new sofas for comfort and safety.

    Last month, Russian furniture giant M25 Group announced that it was taking application for a new position. Although all new products are tested in a specialized laboratory, management decided that in order to better meet the needs of consumers it needed some feedback(反馈) on real-life use of its sofas.  In just a few days, M25 received over 5,000 job applications.

    "We selected candidates in several stages," M25 Group spokesperson Anastasia Russkih said.  "Initially we checked their CVs, and then we let them tell us why they wanted the job. " Eventually, the furniture company shortlisted just 7 candidates, out of which Anna Cherdantseva, a 26-year-old marketing expert, proved to be the most suitable for the job.  "It was a real fight for my dream job," Anna said after getting selected.

    Despite describing herself as an active person, Cherdantseva says that spending about l0 hours a day sitting on sofas doesn't sound bad at all.  "Of course I will spend a lot of time on new sofas.  The more time I spend on them, the better it will be for my work," she told reporters.

    Anna Cherdantseva is at present on a three-month probation(试用期) at M25, but the company claims that as long as she proves to be up to the task, they plan on offering her a permanent position The young woman will receive a monthly salary of 56,000 rubles( $l,000) for the first three months.  It's not so bad for sitting on the job.

    Princess quiz time! How did Snow White survive? How did Cinderella (《灰姑娘》) leave her evil stepmother? How did Sleeping Beauty finally wake up?

    A kind-hearted person always comes to save the princess, like a prince or a godmother. Princesses cannot protect themselves, though they are very pretty and nice. They always need the help of others.

    However, in fact, women can't put their life in the hands of a prince-like man. They need to work and even fight for their own happiness. The traditional image(形象) of a princess is getting out of date.

    Recently, Disney, a company famous for its princess movies, posted the “top 10 rules for being a modern princess”. You will not find any rules related to beauty or looks. The rules focus on loyalty, honesty and other moral values. The rules say princesses need to believe in themselves and try their best to get out of trouble, instead of waiting for a prince's help.

    It's not the first time Disney princesses have caught up with society's development. In 1950, when people's hearts were broken by World War II, Disney created Cinderella. In 1990, Princess Belle from Beauty and the Beast (《美女与野兽》) loved reading when education was a man's special right in the past. Belle showed the improvement of women's position in society. Now is Elsa from the film Frozen (《冰雪奇缘》), a symbol of modern princess.

    “This is brilliant – 'The top 10 rules of being a modern princess' – (it's) about time,” a group named Confidently Mom said on social media website Twitter. Princesses are still very beautiful, but inner character is the key to being a princess.

    The World Happiness Report, a United Nations agency report, measures (估量) how happy people are, and why. Norway is the happiest place on earth—beating neighbour Denmark from the number one position.

    Denmark, Iceland, Switzerland and Finland are among the top five, while the Central African Republic came last. Western Europe and North America took up most of the places at the top of table, with the US and UK at 14th and 19th respectively.

    The World Happiness Report mainly depends on asking a simple question of more than 1,000 people every year in more than 150 countries. “Imagine a ladder, with steps numbered from 0 at the bottom to 10 at the top,” the question asks. “The top of the ladder is the best possible life for you and the bottom of the ladder is the worst possible life for you. On which step of the ladder would you say you personally feel you stand at this time?”

    The average (平均的) result is the country's score—from Norway's 7.54 to the central African Republic's 2.69. But the report also tries to explain why one country is happier than another. It looks at reasons including economic strength, social support, freedom of choice, and generosity.

    This year's report also has a text titled “restoring (恢复) American happiness”, which examines why happiness levels in the United States are falling, despite continually-increasing economic improvement. “The United States can and should raise happiness by solving American's social problems—rising inequality and distrust—rather than focusing mainly on economic growth,” the authors said.

    Jeffrey Sachs, the director of the Sustainable Development Solutions Network, which published the report, said President Donald Trump's policies were likely to make things worse.