We produce 500 billion of plastic bags in a year worldwide and they are thrown away polluting oceans, killing wildlife and getting dumped in landfills where they take up to 1,000 years to decompose. Researchers have been unsuccessfully looking for a solution.

    The 16-year-old Canadian high school student, Daniel Burd, from Waterloo Collegiate Institute, has discovered a way to make plastic bags degrade(降解) in as few as 3 months, a finding that won him first prize at the Canada Wide Science Fair, a ＄10,000 prize, a ＄20,000 scholarship, and a chance to revolutionize a major environmental issue.

    Burd's strategy was simple: Since plastic does eventually degrade, it must be eaten by microorganisms(微生物)．If those microorganisms could be identified, we could put them to work eating the plastic much faster than under normal conditions.

    With this goal in mind, he grounded plastic bags into a powder and concocted(调制) a solution of household chemicals, yeast(酵母) and tap water to encourage microbes growth．Then he added the plastic powder and let the microbes work their magic for 3 months．Finally, he tested the resulting bacterial culture on plastic bags, exposing one plastic sample to dead bacteria as a control．Sure enough, the plastic exposed(暴露) to the live bacteria was 17% lighter than the control after six weeks.

    The inputs are cheap, maintaining the required temperature takes little energy because microbes produce heat as they work, and the only outputs are water and tiny levels of carbon dioxide.

    “Almost every week I have to do chores and when I open the closet door, I have piles of plastic bags falling on top of me．One day, I got tired of it and I wanted to know what other people are doing with these plastic bags．The answer: not much．So I decided to do something myself.” Said Daniel Burd.

Top Music Festivals

    Summer festival season is just kicking off, and there is a lot to look forward to in the upcoming months.

Pitchfork Music Festival

    Anyone who likes indie(独立的)music and up-and-coming artists will have an amazing time at the Pitchfork Music Festival in Chicago's Union Park. This is an indie rock haven that explores more underground and lesser-known bands than the other big Chicago summer festival, Lollapalooza.

    Date: July 14—16, 2018

    Location: Chicago, Illinois, USA

    Music Type :Indie rock

    Price: $126- $2, 700

    Essence Music Festival

    No matter what time of the year it is, New Orleans is an incredible place if you love live music. The Essence Music Festival is a celebration of legendary(大名鼎鼎的)artists like Diana Ross, Chaka Khan and Mary J. Blige.

    Date: June 29—July 2, 2018

    Location: New Orleans, Louisiana, USA

    Music Type :R& B，soul, rock

    Price :$75- $365

    Sziget Festival

    Budapest knows how to hold a party, and Sziget is one of the biggest celebrations of music and culture in all of Europe. You can expect to find favorite artists like Bad Religion and Mac DeMarco taking the stages here during this three-day festival.

    Date :August 9-11，2018

    Location:Budapest, Hungary

    Music Type: Indie rock

    Price: $70- $296

    Flow Festival

    The Flow Festival is a great excuse to explore the city of Helsinki. Artists including Lana Del Rey and The XX will be playing, among many others. Come to this festival to enjoy a relaxing atmosphere with an earth-friendly belief.

    Date: August 11-13, 2018

    Location :I Helsinki, Finland

    Music Type :Rock, soul, jazz

    Price: $106- $199

    Celeste Ng,a new writer,has gained recognition for her first novel,Everything I Never Told You.

    Ng's parents came from Hong Kong,China in the 1960s.Ng was born in America and grew up in Pittsburgh, Pennsylvania,and Shaker Heights,Ohio,in a family of scientists.Celeste went to Harvard University and earned an MFA from the University of Michigan,where she won the Hopwood Award.

    Although her novel is not about race,the characters are Asian.The main character is Lydia,a teenage girl,who is the favorite of three children born to a white mother and a Chinese-American father.The story is about Lydia's disappearance,and the emotions the family goes through as the mystery unfolds.The whole family deals with sorrow, regret,and exposed secrets as they search for their lost daughter.

    Though the characters in this story are Asian,Ng says she didn't really want to include Asian characters.She was afraid people would think the story was about real people in her life.Because she grew up in America and doesn't speak Chinese,she was actually surprised that she included.Asian characters in the book.

    The book has taken off,especially on Amazon,where it won the Editor's Pick for No.1 Best Book of the Year in 2014.Ng is still getting used to the attention,saying she is still amazed when people tell her they have read her book. With so many readers,it's safe to say this is a book you should read.But if you're looking for a simple mystery,this book might not be for you.Most readers warn that you should not read this book unless you're prepared to cry.

    What do you do for fun in your spare time? Do you like reading? Do you often go to a book store? There is a store that is so different from others.

    The World's Smallest Bookstore, whose official name is just these three words, sits quietly about 100 miles northeast of Toronto.

    The bookstore is about 10 feet by 10 feet, so it is easy to imagine how tiny it really is. The bookstore is open 24 hours a day. Inside the bookstore are various books, especially literary books and classic authors' works. So if you are looking for something less popular, you may get a bit disappointed there.

    Another special feature of this bookstore is that each book only costs three dollars. All the expenses are paid on the honor system, which means buyers should make a note of what they've bought and leave their money by themselves. So the tools of the trade in this bookstore are quite simple: pens, papers, light bulbs and a label-maker.

    In order to catch passers-by's attention, the billboards (广告牌) of the bookstore are several times bigger than the store itself. With these large eye-catchers, many people are willing to stop by and have a visit.

    Starting Cycling

    We have two services designed to give people the confidence and knowledge to cycle successfully.

    Lessons

    All our instructors have been trained to National Standards level of “Bikeability”. This means you will be trained to a standard consistent across the whole country.

    There are 3 levels of skills to progress through. Children would start with levels 1 & 2, progressing from the playground or park to cycle on less busy local roads. Teenager and adult beginners can also learn levels 1 & 2 in an off-road and quiet environment.

    Confident teenagers and adults can broaden their skills by learning level 3, using multi-lane (多道) roads and larger roundabouts (环岛). We provide both a complete package of lessons for the beginner or individual lessons tailored to the client. You can ride a bike but don't feel confident about right turns on multi-lane roads. Whatever the need we can address and practice until perfect!

    Everyone can be taught to ride a bike!

    We train both adults and children.

    We cover London Zones 1 & 2

    The cost is ￡30 per hour.

    Guided Ride

    We know that riding on the roads in London can be scary, and if you have to navigate (确定行车路线) as well it can become a real hard task! The Guided Ride service takes all the stress out of it for you by providing the following:

    Route planned in advance to suit your skill level. Route map provided to you.

    Cycle and equipment checked. We will teach you a simple method to check basic roadworthiness (车辆性能) of your bike that you can perform on a weekly basis.

    Route discussed and focus given to any areas requiring special attention.

    Cycle along with the instructor close behind. Here the traffic can be controlled by the instructor and rider observed.

    Occasionally stopping to discuss events.

    We currently cover London Zones 1 & 2. Please contact us if your requirements are outside of these areas.

    Cost ￡30

    Perhaps you have heard a lot about the Internet, but what is it, do you know? The Internet is a network. It uses the telephone to join millions of computers together around the world.

    Maybe that doesn't sound very interesting. But when you've joined to the Internet, there are lots of things you can do. You can send e-mails to your friends, and they can get them in a few seconds. You can also do with all kinds of information on the World Wide Web (WWW).

    There are many different kinds of computers now. They all can be joined to the Internet. Most of them are small machines sitting on people's desks at home, but there are still many others in schools, offices or large companies. These computers are owned by people and companies, but no one really owns the Internet itself.

    There are lots of places for you to go into the Internet. For example, your school may have the Internet, you can use it during lessons or free time. Libraries often have computers joined to the Internet, you are welcome to use it at any time.

    Thanks to the Internet, the world is becoming smaller and smaller. It is possible for you to work at home with a computer in front, getting and sending the information you need. You can buy or sell whatever you want by the Internet. But do you know 98% of the information on the Internet is in English? So what will English be like tomorrow?