A business executive（主管）was deep in debt and could see no way out. He sat on the park bench, head in hands, wondering if anything could save his company.

    Suddenly an old man appeared. “I can see that something is troubling you,” he said. After listening to the executive's words, the old man said, “I believe I can help you.” He asked the man his name, wrote out a check, and pushed it into his hand saying, “Take this money. Meet me here exactly one year from today, and you can pay me back at that time.” Then he turned and disappeared as quickly as he had come.

    The executive saw a check for $ 500,000, signed by John D. Rockefeller, then one of the richest men in the world! “I can settle all my debts immediately!” he realized. But instead, the executive decided to put the uncashed check in his safe. Just knowing it was there would give him the strength to work out a way to save his business, he thought.

    With renewed optimism, he made better deals and extended terms of payment. Within a few months, he was out of debt and making money once again. Exactly one year later, he returned to the park with the uncashed check. At the agreed-upon time, the old man appeared. But just as he was about to hand back the check and share his success story, a nurse came running up and grabbed the old man.

    “I'm so glad I caught him!” she cried.” hope he hasn't been bothering you. He's always escaping from the rest home and telling people he's John D. Rockefeller.” And she led the old man away. The astonished executive just stood there.

    Suddenly, he realized that it wasn't the money, real or imagined, that had turned him around. It was his newly found self-confidence that gave him the power to achieve anything he went after.

    Hadi Partovi, founder of Code.org believes every student should learn the basics of computer science just like they do math, physics, or biology, regardless of what they want to do in the future. The expert says knowledge about the subject is important to understand how the world around us works and compares it to learning about photosynthesis(光合作用), even though not every student is going to be a botanist. To spark students' interest, he created the “Hour of Code,” which introduces the world of computing to anyone, from ages 14 to 104, in a fun, interactive manner. Observed annually during Computer Science Week, the event now draws tens of millions of kids from over 180 countries.

    The “Hour of Code”, which can be scheduled anytime during Computer Science Week, begins with an introductory video on computer science. Participants can then select from hundreds of fun assignments that are sorted by both grade level and coding experience. Though each project is designed to last just sixty minutes, beginners can deal with as many challenges as they desire.

    To help introduce computer science in classrooms on a more regular basis, Code.org has also developed a catalog of online courses that can be incorporated(纳入)in a school's regular curriculum. Since the nonprofit began offering the courses in 2013, over 704, 000 teachers have signed up to teach introductory computer science to over 22 million students worldwide.

    Thanks to the efforts of the pioneer, about 40 percent of US schools now offer computer science as a subject. The numbers are even higher—an impressive 70 percent—if after-school offerings such as robotics clubs are included. Even more encouraging, eight years ago, just 19, 390 students took an Advanced Placement Computer Science exam. By the spring of 2017, the number had jumped 415 percent to 99, 868.

Are we alone in the universe? A team of scientists announced on January 6, 2015 that they had identified eight planets beyond our solar system, three or four of which orbit in their stars' "Goldilocks Zone" — the region where temperatures are not too hot or too cold for water, which is a necessary ingredient for life as we know it, to exist liquid form. This may be good news for people hoping that Earth is not the only inhabited world in the universe.

    The scientists, led by Dr. Guilermo Torres of the Harvard-Smithsonian Center for Astrophysics, made the discoveries using data collected by the planet-seeking Kepler telescope.

    NASA launched Kepler in 2009. Since then, the telescope has identified more than 1,000 planets outside of our solar system. Torres and his team analyzed the data about the eight newly discovered world to determine which ones are most likely to be similar to our Earth.

    Among the new discoveries, the scientists say the planets called Kepler438b and 442b are the closest to Earth. Kepler 438b is just about 10% larger than our planet, and gets 40% more of its energy from its star than Earth receives from the Sun. Temperatures there would be about 140 degrees. Kepler 442b is about 33% larger than Earth, but receives 30% less energy from its star. That would make it a potentially chillier world than our own. Torres says it is possible for life to exist and survive in either of those temperatures, but for that to happen, these planets would need to have another key ingredient for life: a heat-trapping atmosphere like Earth's.

    While these findings add to the possibility that life exists beyond Earth, Torres cautions against drawing conclusions, “We are not claiming they are inhabited,” he says. In fact, these planets are so far away that the scientists cannot observe them directly, which can be explanation for why for now it remains unknown whether these planets contain life. But the discovery of planets in their stars' habitable zones suggests that somewhere out there, some form of alien life may have taken hold.

    International Airport Sheremetyevo Moscow

    If You've Lost Personal possessions

    On Board

    Contact the airline's representatives

    At the Airport

    Contact:

    -- Sheremetyevo Police Department

    +7(495)578-22-55

    --Unclaimed luggage storage room in Terminal C

    +7(495)578-23-26

    --Umclaimed luggage storage room in Terminal D

    +7(499)500-65-52

    (domestic flights)

    +7(495)753-86-41

    (international flights)

    When collecting Lost and Found items, you shall have an identification document, a boarding pass or a ticket, and also to indicate a place where the items were lost and prove they are yours.

    If Your Luggage Is Lost or Damaged

    Before leaving the arrival area, please turn to the Lost and Found counter to file a report. The written claim shall be submitted to the airline company not later than seven days from the time when the luggage was to be collected.

    If your luggage is not found within twenty-one days of the time when the claim was filed, you have the right to claim damages in the amount of not more than 600 rubles per kilogram. Amount refunded (退款) for a hand luggage lost through the fault of an airline is not more than 11,000 rubles regardless of its weight. Amount refunded for damaged luggage is calculated based on the tariffs (关税).

    Keep your flight documents (a ticket, boarding pass, luggage tag, and delayed luggage report filed at the airport) until the end of the procedure for searching for your luggage.

    Current information on luggage-tracing results

    +7(495)578-76-65

    Lost and Found service of Aeroflot Airlines

    +7(495)544-33-25

    (from 9:00 to 20:00)

    +7(495)753-86-41

    (24 hours)

    For further information please contact the airline.

    THREE years ago Jenny Salgado, a Dominican shop assistant, moved to Highland town, a neighborhood of Baltimore. When she arrived the shop she works in, it was one of only a few Spanish businesses. Now there are many more. "It's good now if you speak Spanish," she smiles.

    Baltimore has been losing people for 60 years. To address this, its mayor, Stephanie Rawlings-Blake, wants to make it the most immigrant-friendly city in the world. Its libraries provide Spanish-language exercise classes. To help those with no papers, the city is introducing micro-loans (小额贷款) which require no credit checks; city police would no longer routinely check the immigration status of citizens or enforce any federal immigration law unless required to. The then governor, Martin O'Malley made it possible for illegal immigrants to get driving licenses.

    Such welcoming policies are spreading. Such cities as Cleveland, Dayton and Philadelphia all eagerly try to please immigrants. Rick Snyder, the governor of Michigan, has asked the federal government to offer 50,000 visas to people who agree to live in Detroit. His administration has made it easier for skilled migrants to get professional licenses.

    When a city's population falls, both tax receipts and services fall. Half-deserted neighborhoods breed (滋生) crime, driving yet more people to leave. No city has escaped this death circle without attracting new residents, says Steve Tobocman of Global Detroit.

    Several studies suggest that when immigrants arrive, crime goes down, schools improve and shops open up. In Detroit, immigrants living near the tiny separate city of Hamtramck have formed local watches to guard against thieves. Their neighborhoods are not just safer; they are also among the only places where it is as easy to buy fresh vegetables as drugs and alcohol.

    But attracting new immigrants to the cities which most need them is hard, argues Audrey Singer of the Brookings Institution. They care about the same things as everyone else: safe streets, good schools and jobs. Cities which have lost population for decades struggle with all of these.

    TV, iPads, and computers are fun and sometimes educational, but many people think the technology is bad. My parents let me watch one or two shows or play a game on the iPad for an hour, but then make me find thing else to do, like read or draw a picture. They say that too much screen time won't help me become smarter.

    I think that it is okay to watch TV, but not too much. And some of my friends agree.

    "A tiny bit of screen time is okay," Mateo J., 7, said. "But too much of it is not good for your brain."

    Though my friends and I sometimes complain (抱怨), we think that it's good our parents limit our screen time.

    "Our parents should limit our technology time because otherwise you might get carried away and not even know that you've stayed inside all day watching TV," Naomi J. , 9, said.

    The American Academy of Pediatrics(AAP) used to recommend (推荐) that parents let kids have about two hours of screen time per day, but in 2016, they started recommending that parents of kids 6 and older decide for themselves how much time is okay, as long as the shows and games are appropriate. The AAP still says that kids 2-5 years old should have only about one hour of screen time per day, and kids under 2 no screen time at all. The AAP says that media you've stayed inside all day in all forms, including TV, computers, and smartphones, can affect how children feel, learn, think, and behave. However, parents are still the most important influence.

    I think TV shows like Brain Games and Cupcake Wars are inspiring. I've even learned some magic while watching Brain Games! Video games can be educational, as some TV shows are about nature, and other shows have useful messages. But some games and shows have bad things in them, like smoking.

    You can play outside instead of watching TV. Find other things to do. You don t have to be or screens all day.