The Pew Internet Project did the survey with the National Writing Project. Judy Buchanan is the vice director of the National Writing Project and a co-author of the report. Ms. Buchanan says digital research tools are helping students learn more and faster. “Teachers really favor these tools because they are ways to make some of the learning exciting and engaging. Young people favor these tools. The goal is to really help them become creators of meaningful content, and not just sort of consumers.”

    But one problem the survey found is that many students lack digital literacy. They trust too much of the information they find on the Internet. Judy says these students haven't developed the skills to determine the quality of online information.“It's something that really has to be taught and paid attention to. Because in a world in which things happen quickly, you do need to step back, reflect and analyze the information you have.”

    Another problem is blamed on something that might not seem like a problem at all: being able to quickly find information online. Teachers say the result is a reduction in the desire and ability of their students to work hard to find answers. They say students are overly dependent on search engines and do not make enough use of printed books or research libraries.

    Many teachers are also concerned that the Internet makes it easy for students to copy work done by others instead of using their own abilities.

    A 16-year survey on the arctic Norwegian island of Svalbard found the reindeer（驯鹿）there have declined in weight by an alarming 12 percent. The reduction in average body-mass is being blamed on global warming.

    In research presented lately at a meeting of the British Ecological Society in Liverpool, scientists will explain how rising temperatures are making female reindeer difficult to obtain nutrients during important periods of being pregnant.

    Snow in Svalbard typically covers the ground for eight months of the year, which, combined with low temperatures, limits grass growth to June and July. But as summer temperatures have increased by around 1.5℃, grasslands have become more productive, allowing female reindeer to gain more weight by the autumn and therefore to conceive（孕育）more calves.

    However, warmer winters have brought with them greater rainfall which freezes when is settles on the snow, therefore locking out the reindeer from the life-supporting food below. As a result, female reindeer are becoming starved, causing them to give birth to much lighter young. The average mass of an adult reindeer in 1998, when the survey began, was 55kg, but by 2016 IT had dropped to 48kg.

    Professor Steve Albon, an ecologist at the James Hatton Institute in Aberdeen , said that, because the mammals have a relatively high surface-area-to-volume ratio（表面积与体积比）, they are no particularly energy efficient.

    Reindeer can often access the inadequate food sources beneath the snow by clearing IT away with their antlers（鹿角）, but they cannot break through the hard ice. Without access to the food in winter, calves are being born far lighter than they should be. Numbers of reindeer have also increased rapidly in the past 20 years, meaning that those which are born are facing greater competition for food. “The implication（含义）are that there may well be more smaller reindeer in the Arctic in the coming decades, but possibly at the risk of catastrophic die-offs because of increased ice on the ground,”said Professor Albon Despite the gloomy findings, reindeer appear to be suffering less from the impact of climate change than some other arctic species.

    We've all had cases where we've waited just a bit too long to pay an electric bill or speeding ticket. But one man, from California by reasonable assumption, who goes by “Dave”, recently took procrastination (拖延) one step further, by paying a parking ticket almost a half-century after it was given.

    In December 2018, the Minersville Police Department in Pennsylvania received a letter in the mail. Whoever wrote the letter decided it was best to keep his name somewhat unknown, so he put the return address as “Wayward Road, Anytown California” under the name “Feeling guilty”.

    When the officers opened the envelope, they found a brief letter, along with a $5 bill, and a parking ticket dating all the way back to 1974.The note read, “Dear PD, I've been carrying this ticket around for 40 plus years always intending to pay. Forgive me if I don't give you my info. With respect, Dave.”

    Even though the initial parking ticket was only for $2, “Dave” must have felt awfully guilty because he left 150 percent, or $3, in interest.

    Michael Combs, the Police Chief of the Minersville Police Department, stated in an interview that the same ticket would cost about $20 if it was given today. Combs went on to share that the original ticket from 1974 was given to a vehicle that had an Ohio license plate.

    Because there was no system for tracking tickets given to out-of-state cars back then, “Dave” could have gotten away with never paying the $2 fine. But apparently, guilt got the best of him, and he decided to finally cough up the money more than 40 years past its due date.

    A trip to Paris is not complete without a visit to the Eiffel Tower. To get the most out of your visit read our tips below:

    Visit at Night

    Riding up the Eiffel Tower at night and looking out over the streets of Paris, you'll see why Paris is known as the “City of Light”. At street level, the spotlights on the top of the Tower and the reflections (倒影) of the Tower in the Seine (塞纳河) are sights not to be missed.

    Purchase (购买) Your Ticket in Advance Online

    Avoid the long ticket lines at the Eiffel Tower by purchasing your ticket online from the Eiffel Tower website.

    You'll pick a time to visit and then select whether to print out the ticket or display it on your phone or iPad, a convenient choice if you buy your ticket in Paris without a printer.

    Don't Bring Valuable Objects with You

    Before entering the Eiffel Tower, your bags will be examined by a security officer. If an item you are carrying sets off the metal detector, the officer will take you away from the line for further inspection. Probably you will miss the chance to go up the Eiffel Tower.

    Have Drinks and Snacks at the Eiffel Tower

    If you're like us, after an exciting trip to the Eiffel Tower, you'll be ready to rest your legs and have a relaxing snack and a drink in a Parisian cafe. Across the Seine in the Trocadero area, there are many elegant cafes. The atmosphere is great, but the prices are in the stratosphere (极高水平). Actually, the perfect place for common visitors to eat and drink is on the Eiffel Tower itself.

    WeChat, the Chinese social media smartphone app, saw an increase in user numbers of 41 percent year on year to 500 million at the end of last year, in a sign that parent company Tencent is extending its reach for the mobile Internet. As one of the largest Internet integrated service providers in Chinaand one of the most Internet users in China, Tencent's profit grew 24 percent to RMB 20.98 billion per year, slightly higher than forecasts, driven mainly by online gaming profits. It is unclear how much WeChat contributed to Tencent's profits but the app's growth is a strong indicator of the company's long-term health as it tries to adjust its business to be more suitable for mobile devices.

    "We extended our leadership in games and online media, and made breakthroughs in emerging platforms such as online security and mobile payments." Ma Huateng, Tencent chairman, said in a statement. WeChat is the second highest ranked social app in China, behind QQ, Tencent's another chatting app, which claimed to have 815 million registered monthly users at the end of 2014.

    Tencent has been unwilling to earn money through WeChat by flooding it with advertising, which could influence the users' experience. But this is expected to change. Some analysts anticipated(预期) that advertising would be introduced on a large scale later this year. Early attempts to test ads on the service have not always gone smoothly. After a BMW ad was introduced on some users' feedbacks in January, many users who were not targeted by the brand's marketing complained of "discrimination" by Tencent's data mining algorithm(数据挖掘算法). They claimed it unfairly treated them as not wealthy or successful enough to view the BMW ad.

    Bookstores are a traveller's best friends: they provide convenient shelter in bad weather, and they often host readings and other cultural events. Here is a look at the world's six greatest bookstores.

    Adrian Harrington—since 1971. Rare books; rare first editions; leather—bound sets and general antiques (古玩). Address: 64A Kensington Church Street, Kensington, London, England, U.K.

    Another Country— Kreuzberg, Berlin, Germany. Another Country is an English language second-hand bookshop which is mostly used as a library. They have about 20,000 books that you can buy or borrow. Some regular events are held at the shop, such as readings, cultural events, social evenings and film nights.

    Atlantis Books—Oia, Santorini, Greece. Atlantis Books is an independent bookshop on the island of Santorini, Greece, founded in 2004 by a group of friends from Cyprus, England, and the United States. Throughout the year it has hosted literary festivals, film screenings, book readings, and good old-fashioned dance parties.

    Bart's Books—Ojai, California, U. S. A. "The World's Greatest Outdoor Bookstore", a bookstore founded by Richard Bartinsdale in 1964. Shelves of books face the street, and regular customers are asked to drop coins into the door's coin box to pay for any books they take whenever the store is closed.

    10 Corso Como—Milan, Italy, Extensive selection of publication on art, architecture, design, graphics and fashion, along with a strong emphasis on photography. It was founded in 1990 in Milan, Italy, by Carla Sozzani.

    The Bookworm—A bookshop, library, bar, restaurant and event space, now with five locations in three cities in China—Beijing, Suzhou and Chengdu. The interconnecting rooms with floor-to-ceiling books on every wall are light and airy in summer, yet warm and comfortable in winter.