April is Financial Literacy Month，when Americans of all ages are encouraged to learn how to be smart about money.And this year，fifth­grade Rachel Kelly from Naperville，Illinois，is already at the head of her class.Kelly,11, won a nationwide contest called the Stock Market Game.

    Students who take part in the Stock Market Game，run by the SIFMA Foundation，a financial­education organization，pretend to buy stocks (股票) worth $100,000.Then they have to read financial news over several days to see if their investments would have gained money or lost money and write an article explaining their choices.

    “I  wanted  to  choose  a  company  that was well­known，” writes Kelly.“I thought about products that I see every day，so cars came to my mind.” Kelly picked the Japanese car company Honda Motors.“Honda Motor Company is the No.1 producer of motorcycles in the world and the fifth­largest producer of automobiles behind Toyota，Volkswagen，General Motors and Hyundai，” says Kelly.

    Honda makes many different kinds of cars，which Kelly thinks makes the company a safe investment.She explains that even if the cost of gas goes up，Honda has a good chance of staying in business because of the company's fuel­efficient cars，which run on less gas than most cars made today.

    “If one of their departments is not doing so well，it won't affect the overall company sales，” she writes.

    Because the stock Kelly picked performed well and her article was persuasive，Kelly won this year's contest.About 600,000 students from 4th to 12th grade competed.

    Your next Saturday night takeaway could be brought to you by a robot after a major food delivery company announced plans to use automated vehicles to transport meals. Europe's biggest online takeaway food company Just Eat has partnered with Starship Technologies to deliver food with robots on the streets of London later this month. “Nobody has ever done deliveries with land-based robots,” said Allan Martinson, the chief operating officer of Starship.

    The robot courier can travel up to 4 miles per hour for about 10 miles. It uses a GPS signal and nine cameras to navigate(确定方向). Instead of a person arriving at their door, customers could find themselves receiving a notification(通知) on their phone that says a robot is on its way and a code to unlock the automated courier. “Put the code in, the robot opens up, and there's your food,” said David Buttress, chief manager of Just Eat.

    The robot, which has so far been tested in Greenwich, Milton Keynes and Glastonbury, costs ￡1 to transport within 3 miles, compared with the ￡3 to ￡6 it costs for a human courier. To date 30 robots have driven nearly 5,000 miles without getting into an accident or finding themselves picked on by passers-by. They have driven in more than 40 cities around the world, including London and Tallinn, Estonia.

    An initial worry was how the public would react to robots. But Martinson said the public has been calm when passing the delivery machine on the streets. “The most surprising reaction has been the lack of reaction,” said Martinson.

    Another significant fear was that people would disrupt(扰乱) the robots, or try to steal them and their contents. To prevent this, the robot is fitted with nine cameras, two way audio, and movement sensors that send a warning if it is lifted off the ground. And it opens only with a pass code provided to the customer via a notification. “It's much easier to shoplift than it is to steal a robot,” said Martinson.

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    Five meteorologists (气象学家) who were trapped for two weeks after polar bears surrounded their weather station are now able to leave after the creatures were chased away. Their supervisor told NBC News early Wednesday.

    Russian officials had feared the siege could last for another month, the time it would take to reach the islands in the Kara Sea, high in the Arctic Circle. But on Tuesday night a research ship took a detour (绕道) to assist those weathermen, station supervisor Vasily Shevchenko told NBC News. The ship run by Russia's state-run oil firm Rosneft frightened away the bears using its helicopter, before resupplying the weather station with more food and puppies (幼犬) . The puppies are not yet big enough to deter the bears, but the station is planning to draft in a replacement adult guard dog as soon as possible.

    Some of the bears had taken to sleeping directly outside the windows of remote outpost. There was no risk of the researchers starving because they had a year's worth of food, but they were forced to take dangerous trips to a nearby building, holding a gun for protection, according to Shevchenko.

    Polar bears are an endangered species. In Russia, it's a crime to shoot them unless in self-defense. The bears usually leave the islands in the summer, but this time they were trapped by the melting ice, an apparent sign of climate change, according to Shevchenko. “They've stayed on the island because there is nowhere for them to go,” he said.

    The animals suffer from global warming because it shrinks the floating ice that forms their main hunting ground. According to the environmental group the World Wide Fund for Nature, known as the WWF, this has got some polar bears to go near human habitats in search of food.

    As Canadians we may have a love-hate relationship with snow.We love the opportunities it provides: skiing,snow-boarding,cross-country and snowshoeing（雪鞋健行）.There are the advantages of creating snowmen.The beauty of the snow seems to blanket our community after a fresh snow.However,you may hear  icy roads,getting stuck in snow banks,temperature dropping;roofs collapsing（倒塌）from the weight of snow go in the hate category.

    To find joy with winter I have tried various activities to get me out and playing in it.My new favorite for the past 10 years is snowshoeing.The sport becomes popular because it only requires you to lift your knees up higher, which provides a greater exercise benefit.

    According to the Canadian Icons website,snowshoes have been a common form of transport in this country for hundreds of years thanks to the creativity of the native people.The oldest snowshoes were made by the Ojibwa people.With the snowshoes our deep snow walking would be possible.The snowshoes allowed them to float on top of the deep snow by having the weight of the walker distributed across the surface.The snowshoes allowed people to go across the top of the globe from Central Asia to Canada.

    This past New Year's Eve day my oldest son and I went snowshoeing as a great way to end the year by getting to the mountain top.We enjoyed a snack at the top and our dog Indiana rounded out our party.My son took several photos along the way of the amazing views to send them to his new city friends.We are fortunate to live in such a beautiful part of this amazing country.

    Snowshoeing is a great activity to combine your exercise with visiting with friends and families.Wear layers, bring water and snacks and go play in the snow.And your friends will share his enthusiastic story with you.

    In the past, people who graduated from college felt proud of their academic achievement and confident that their degree would help them find a good job.

     However, in the past four years the job market has changed dramatically. This year's college graduates are facing one of the worst job markets in years. For example, Ryan Stewart, a graduate of San Jose University, got a degree in religious studies, but no job prospects. He points out that many people already working are getting laid off and don't have jobs, so it's even harder for new college graduates to find jobs.

    Four years ago, the future looked bright for the class of 2013. There were many high-tech job opportunities. Graduates received many job offers, and they were able to get jobs with high salaries and benefits such as insurance and paid vacations. However, “Times have changed and it's a new market,” according to Cheryl Allmen- Vinnidge of the San Jose State Career Center.

    Allmen-Vinniage says students who do find jobs started preparing two years ago. They worked during summer vacations, they have had several internships（实习）, and they have majored in one of the few fields that are still hot, like chemical engineering, accounting, or nursing, where average starting salaries have actually increased over last year. Other popular fields (like information system management, computer science, and political science) have seen big reduction in starting salaries.

    Ryan Stewart (he had hoped to become a teacher) may just end up going back to school. “I'd like to teach college some day and that requires more schooling, which would be great in bad economy.” he said.

    In conclusion, these days, to some students a degree may not be a ticket to instant wealth. For now, they can only hope its value will increase over time.

    A new study warns that about thirty percent of the world's people may not have enough water by the year 2025.

    A private American organization called Population Action International did the new study. It says more than 335 million people lack enough water now. The people live in 28 countries. Most of the countries are in Africa or the Middle East.

    P-A-I researcher Robert Engelman says by the year 2025, about 3,000 million people may lack water. At least 18 more countries are expected to have severe water problems. The demand for water keeps increasing. Yet the amount of water on the earth stays the same.

    Mr. Engelman says the population in countries that lack water is growing faster than in other parts of the world. He says population growth in these countries will continue to increase.

    The report says lack of water in the future may result in several problems. It may increase health problems. Lack of water often means drinking water is not safe. Mr Engelman says there are problems all over the world because of diseases, such as cholera, which are carried in water. Lack of water may also result in more international conflict. Countries may have to compete for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands, Cambodia, Syria, Sudan, and Iraq. And the report says lack of water would affect the ability of developing to improve their economies. This is because new industries often need a large amount of water when they are beginning.

    The Population Action International study gives several solutions to the water problem. One way, it says, is to find ways to use water for more than one purpose. Another way is to teach people to be careful not to waste water. A third way is to use less water of agriculture.

    The report also says long-term solutions to the water problem must include controls on population growth. It says countries cannot provide clean water unless they slow population growth by limiting the number of children people have.