Breakthroughs in science and technology are paving the way for modern cities to support bigger populations. Now, we see the most exciting urban innovations to show you exactly how they'll improve your city's infrastructure(基础设施).

Lighting Up The Night

    Anthony Di Mari dreamed up an electric tree to help irrigate public parks and light them at night. These electric trees contain a special infill (填充物) that collects water from rainfall. The water is then distributed through a shallow underground irrigation system with the help from the trees' swaying movement. An electric motor turns energy from the waving of the artificial trees into electricity, which is used to light up the trees' outer LEDs.

Thinking Outside The Box

    As more people flock to urban areas, city planners will need to get increasingly creative about how to satisfy residents' health and transportation needs within decreasing available space. One way to achieve this is by updating infrastructure to support biking and walking by building suspended(悬浮的) roundabouts like hovering in the Netherlands. By lifting bicycle and pedestrian traffic above busy roadways, cities can significantly decrease over-crowded traffic condition.

Waving Hello To Clean Energy

    Cities that don't receive enough sunlight may find an attractive alternative in wave power. Since ocean waves rarely experience disruption(中断), electric engines driven by their clockwork push-and-pull can reliably provide power throughout the year. Further, thanks to advances in wave power technology, engineers have been able to move wave power engines farther offshore, where the waves pack the most punch, making the engines extremely efficient. So in the future, heavily populated coastal cities may use wave to meet their energy needs.

    ARNOLD Schwarzenegger is back, once again taking on his iconic killer robot role, the T-800, in August's new movie Terminator Genisys. While the T-800 model—even if it can be evil—has a fond place in moviegoers' hearts, the reality of autonomous machines is no joke, according to scientists.

    Autonomous weapons use artificial intelligence (AI) to choose targets without human help. They were described as “the third revolution in warfare, after gunpowder and nuclear arms” in an open letter signed by over 1,000 important technology figures in July. The list included British scientist Stephen Hawking and Apple co-founder Steve Wozniak. They asked governments around the world to ban autonomous weapons, warning that killer robots could start ethnic cleansings and an arms race.

     “They will look like tanks. They will look like battleships. They will look like jet fighters,” UK robotics professor Noel Sharkey told CNET, a leading technology website.

    But unlike these machines, which require a human hand in their action, so-called “killer robots” would have some decision-making abilities and the ability to act on their own.

     “If any major military power pushes ahead with AI weapon development, a global arms race is almost inevitable,” said the letter released at the 2015 International Joint Conference on Artificial Intelligence in Buenos Aires, Argentina.

    The idea of an automated killing machine was made famous by Schwarzenegger's first Terminator movie in 1984. While no red-eyed robots have been sent after human beings, the idea of AI being used as a weapon has gotten much more likely in the years ever since. The US military is already developing autonomous flying vehicles that can carry out all the steps of a strike mission without a human controlling them, according to a May report in Nature magazine.

    Scientists have even painted a destructive picture of autonomous weapons falling into the hands of terrorists or warlords hoping to carry out ethnic cleansings.

     “The development of full artificial intelligence could lead to the end of the human race,” Hawking said to the BBC in 2016.

Authorities are gradually waking up to the risk of robot wars. Last May, for the first time, the United Nations brought governments together to begin talks on autonomous weapons systems.

    Still, a ban on autonomous weapons is “easier said than done”, commented The Guardian. The dual (双重的) uses of the AI technology—for harm and for good—is difficult to manage. This is because the exact same technology can be used in a wide range of ways, the paper said.

    Scholarship Application Tips in 2013 for college students

    Before you apply

    ⒈Work hard to get good grades. Don't sweat about one bad grade, but always strive(力求)to do your best.

    ⒉Get involved, and stay involved, in extracurricular(课外的)activities. Sports, clubs, drama, bands and orchestras－these often count toward a student's overall scholarship application evaluation. The same goes for paid (or unpaid) work experience.

    ⒊Begin your scholarship research early－by your sophomore(大学二年级)or junior year of high school, if possible. Make special note of application deadlines, as they can vary from late summer to late spring.

    ⒋Apply for as many scholarships as you are eligible(符合条件的)for－several smaller scholarships can add up to a lot of money.

    During the application process

    ⒈Read the supplementary materials that come with scholarship application forms to better understand the program's focus (community service, subject interest). Try to answer the questions with the focus area in mind.

    ⒉Answer questions as they are asked. Don't got off topic.

    ⒊If there is a financial component to the application, make sure you get accurate and complete information from all appropriate sources to ensure your eligibility.

    ⒋Take your time. Write down everything you can think of for each question, then set the application aside for a day so you can look everything over again before you send it off.

    ⒌Don't wait until the last minute to complete your application, especially if you are applying online. Computer systems can get clogged(阻塞的)with the large volume of applicants hoping to submit their qualifications during the last few days and hours before a deadline.

    ⒍If a third party has to complete part of your application, such as providing a letter of recommendation, make sure you ask them early on and remind them as often as necessary to ensure they provide you with the necessary materials.

    ⒎Last but not least, review your application with your parents to make sure you haven't left out any important details.

Good luck to the students applying for the 2013 scholarship programs!

    One day, a man saw an old lady sitting inside her car at the side of the road. Though it was dark, he could see she needed help. So he stopped his car and walked towards her. The old lady was worried, even though she noticed the smile on his face. Was he going to hurt her? "I'll help you start your car, madam. By the way, my name is Bryan Anderson," he said.

    While Anderson was fitting a spare tire(备胎)to her car, the lady began to talk to him. She thanked him much for coming to help.

    Anderson just smiled as he put his tools away. The lady asked how much she should pay him. He told her that if she really wanted to pay him back, the next time she saw someone who needed help, she could give them the help they needed. He waited until she started her car and drove off.

    A few miles down the road, the lady saw a small restaurant. She went in and a waitress came over with a sweet smile. The old lady noticed the waitress was nearly eight months pregnant(怀孕的), but she never let the pains and aches change her smile when she served her

    The lady finished her meal and paid with a hundred-dollar bill. The waitress quickly went to get change, but the old lady was gone when the waitress came back. The waitress wondered where the lady could be. Then she found there was a note on the napkin(餐巾), "You don't need to give me anything back. Somebody once helped me out the way I'm helping you. If you really want to pay me back, here is what you do—do not let this chain(链子)of love end with you."

    Under the napkin were four more$ 100 bills.

    Sometimes the best gift is the one you can use at home. These items will likely be appreciated all year for time spent relaxing, entertaining or getting things done.

    Jawbone Jambox Wireless Speaker

    $199 retail (far cheaper online). The bigger version goes for $299.

    The cool-looking rechargeable wireless speaker is getting good reviews for its big, balanced sound and compact design. It lets you stream music from smartphones, laptops and other Bluetooth devices(设备).

    Chalkboard Wall Planter

    $129. 95 retail at Williams-Sonoma

    No need to make room indoors for more flower pots. Grow a herb garden indoors in a wall-fixed vertical planter, and you'll get the benefits of fragrance (芳香). Fill the 10 planting cells with the herbs of your choice, and hang the planter in a sunny spot. Use the chalkboard borders to label each plant. Measures 16 by 5 by 24 inches and weighs 11 pounds.

    Pocket Projector

    $299 retail at Brookstone

    Let everyone get a good look at the pictures on your smartphone, computer, video player, or digital camera. This rechargeable pocket projector can turn a flat surface into a 60-inch big screen with 1080p HD picture quality. Invite friends for a movie night or a presentation. An HDMI cable is included to connect it to your device.

    Adjustable Tablet Stand

    $159 at Sharper Image

    This is the gift for the person who enjoys mobile. Use it to keep your hands free while doing homework, crafts or writing out bills. It can be rotated through 360 degrees. The stand slides easily under your furniture and can be used on either side of a bed or a sofa. It also folds for storage.

Volunteer Chances for Teens

    About Learning Buddies

    Learning Buddies is an education program for K-5 students at the Beacon Hill, Columbia, Douglass-Truth, New Holly and West Seattle Library branches (分馆). Teen volunteers and kids read together, learn math and play educational games with support from librarians.

    If you are a high school student who enjoys math, reading and helping kids succeed in school, please consider volunteering as a Learning Buddy. You will get service learning experience and earn(获得) community service hours for school.

Learning Buddies teaches kids once a week. Volunteer chances are offered at the following Library branches, October through December and March through May.

    Beacon Hill Branch: Tuesday, 4:15 p.m. to 5:45 p.m.

    Columbia Branch: Thursday, 4:15p.m. to 5:45 p.m

    Douglass-Truth Branch: Tuesday, 4:15 p.m.to 5:45 p.m.

    New-Holly Branch: Tuesday, 4:15 p.m. to 5:45 p.m.

    West Seattle Branch: Tuesday, 4 p.m. to 5:30 p.m.

    Become a Learning Buddy

    High school students must be at least 14 years old and live close to a Library branch that offers the Learning Buddies program.

    You can ask for a volunteer application (申请书) and attend an interview at one of the following Library branches at least one month before the fall or spring Learning Buddies series.

    Beacon Hill Branch: call the Teen Services Librarian at 206-684-4711.

    Columbia Branch: call the Teen Services Librarian at 206-386- 1908.

    Douglass-Truth Branch: call Services Librarian at 206-684-4704.

    New-Holly Branch: call the Supervising Librarian at 206-386- 1905.

    West Seattle Branch: call the Teen Services Librarian at 206-684-7444.