Some people may think I'm crazy when I say “work is rest”. But that's the way it is — we need to rest. Without rest, we will die. At a minimum, we won't have the energy to work.

    Nobody forces us to be so stupid about this. We just don't know how to rest properly. We rest in ways that are not restful, even stressful. Some of our ways of rest interfere with our working energy. Instead of sleep, we go to the movies and clubs, drink or have a smoke with friends. This is because we misunderstand the meaning of “rest”.

    We should remember that rest means not working, both physically and mentally. Only then is it real rest. When tired, rest. It's simple. Actually, dogs and cats are smarter about this than people. People are stupid enough to rest in ways that destroy their capacity to work.

    Rest and work always go together. There must be a balance: work during the day and rest at night. When the sun comes up, one has plenty of strength to work well and enjoy it. In other words, rest is a kind of investment, so that one has the strength and energy to continue working. So we need rest to work, recognizing that we can't have one without the other. Rest is what recharges our batteries. We need enough time to charge up adequately to the tasks we undertake. Thus, we need to rest correctly; otherwise, illness will occur and also can affect the efficiency of our work.

    Rest can't be skimped. Without enough rest, good work is impossible. This is why we say that rest is another kind of work.

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    Close your eyes for a minute and imagine what life would be like if you had a hundred dollars less．Also imagine what it would be like spending the rest of your life with you eyes closed．Imagine having to read this page, not with your eyes but with your finger-tips．

    With existing medical knowledge and skills, two-thirds of the world's 42 million blind should not have to suffer．Unfortunately, rich countries posses most of this knowledge, while developing countries do not．

    ORBIS is an international non-profit organization which operates the world's only flying teaching eye hospital．ORBIS intends to help fight blindness worldwide．Inside a DC-8 aircraft, there is a fully-equipped teaching hospital with television studio and classroom．Doctors are taught the latest techniques of bringing sight back to people there．Project ORBIS also aims at promoting peaceful cooperation（合作） among countries．

    ORBIS tries to help developing countries by providing training during three-week medical programs．ORBIS has taught sight-saving techniques to over 35,000 doctors and nurses, who continue to cure tens of thousands of blind people every year．ORBIS has conducted 17 plane programs is China so far．For the seven to ten million blind in China ORBIS is planning to do more for them．At the moment an ORBIS is working on a long-term plan to develop a training center and to provide eye care service to Shanxi Province．ORBIS needs your help to continue their work and free people from blindness．

    For just US$38,you can help one person see; for $380 you can bring sight to 10 people; $1,300 helps teach a doctor new skills; and for $13,000 you can provide a training program for a group of doctors who can make thousands of blind people see again．Your money can open their eyes to the world．Please help ORBIS improve the quality of life for so many people less fortunate than ourselves．

    Plastic is easy, convenient, cheap and long-lasting, but it does great harm to the environment.

    Since plastic entered mass production, 8 billion tons have been produced – and we aren't very good at recycling. By 2015, 6,945 tons of plastic waste had formed, with around 9 percent of it getting recycled. About 79 percent of it ends up in landfills or around the environment, including the ocean. We may end up drowning in plastic before long.

    Chemists at Colorado State University have found a polymer（聚酯）that has many of the qualities of plastics – it's light, strong, durable and heat-resistant – but that can be changed back to its original small-molecule（分子）state for complete recycling. Even after being recycled, the polymer can be turned back into its plastic-like state, and this can be done quickly and cheaply.

    This new polymer has all the good qualities of plastics, yet it is relatively easy to make and to recycle. Making it requires room temperature conditions, a short reaction time to bond the monomer（单体）into polymers and only a small amount of the catalyst（催化剂）remains in the end product. It has a high molecular weight, stands up to heat and generally behaves like plastic. Recycling it requires similarly little effort. Mild lab conditions are required and so is a catalyst. Once applied, the polymers are once again monomers in a matter of minutes and can be used to create another product.

    But don't get too excited about this just yet. Scientists stressed that the polymer isn't ready for mass products just yet. There's still plenty of development to do, including making it more economical to produce and recycle.

    Running seems easy enough: Just grab a pair of sneakers and put one foot in front of the other, right? Well, anyone who struggled to get through a mile knows it's not quite that simple. We've asked experienced runners to tell us something wrong they did when they started running. The following are some of their answers.

    I got excited and signed up for a half-marathon with a few more experienced runner friends, but I wasn't adequately prepared and didn't train efficiently. I ended up with blisters(水泡) on my feet. I couldn't wear shoes for two days!

—Cali Lavey

    I have always been athletic and I have never been badly injured, but one day I felt a slight pain in my knee. I ignored it for a month until I realized I was having a hard time putting weight on my right leg. I finally went to a doctor. It took four months of weekly physical therapy(治疗) to heal. I shouldn't have done that.

— Arnold

    My biggest mistake was treating running like soccer practice: If I wasn't exhausted by the end of practice, I felt as though I didn't work hard enough. I run all of my runs at 80 percent effort, or the equivalent of what I now call tempo runs (节奏跑). I wasn't warming up to the pace or cooling down effectively.

— Kate

    I decided to go out for a run during the hottest part of the day. At the time, I told myself that it would be refreshing to sweat a little, but I didn't bring adequate water. I returned feeling completely rundown, dehydrated (脱水的), and exhausted. If you must go out on a run during unfavorable weather, wear proper suits and bring enough water to keep you feeling strong.

— Sarah

    While it's books that make a library, being in lovely surroundings may provide inspiration and help you work a little bit harder. Here are some of the coolest libraries of the world.

    Library of Birmingham – Birmingham, U.K.

    The new Library of Birmingham is said to be not only Britain's biggest public library, but also the largest in Europe. Designed by Dutch architects, this replacement for the Birmingham Central Library was opened in 2013 and has a wealth of resources within its walls, including adults and kids' libraries, music collections, a Shakespeare Memorial Room, and even a gym room. Gardens crown the roof, while the changing seasons bring variations in the shadows and reflections inside.

    National Library of France – Paris, France

    The National Library of France, which now contains an astonishing collection of 30 million, dates back to the 14th century and this royal library was set up at the Louvre by King Charles V. The Library was moved to Rue de Richelieu site in 1868, with major design work carried out by French architects Henri Labrouste and, following his death, Jean-Louis Pascal. Here, the reading rooms are elegance itself. There are more than just books to be found.

    State Library of New South Wales – Sydney, Australia

    The public State Library of New South Wales holds the honor of being the oldest institution of its kind in Australia. It was originally set up as the Australian Subscription Library in 1826, but it wasn't until 1942 that its permanent home was ready. Designed by Sydney architect Walter Liberty Vernon and completed in 1910, the magnificent sandstone Mitchell Wing is one of the architectural highlights.

Seattle Central Library – Seattle, Washington, USA

    Seattle Central Library's distinctive design ensures it stands out. Architect Rem Koolhaas is one of the names attached to its design. Architects sought to envelop the 11-story building with “a layer of transparency”, using a skin of glass and metal. The finished article houses about 1.45 million books and other things, as well as more than 400 computers available for public use. The building, which opened in 2004, was included on the American Institute of Architects' list of America's 150 favorite buildings in 2007.

    HONG KONG-Cross-border buses operated by Hong Kong companies on Friday started trial runs on the Hong Kong-Zhuhai-Macao Bridge (HZMB) in preparation for the bridge's upcoming opening.

    "The trial runs, arranged by the governments of the Chinese mainland, the Hong Kong Special Administrative Region (SAR) and the Macao SAR, would last for three days and aimed at testing the readiness of boundary crossing facilities (设施) of the three places," the Hong Kong SAR government's Transport and Housing Bureau told Xinhua.

    Two major cross-boundary coach trade associations in Hong Kong were invited to send buses and members to participate in the trial runs.

    Freeman Cheung, secretary of Hong Kong Guangdong Boundary Crossing Bus Association, said his association would run one bus with about 10 passengers on Friday and Saturday respectively as part of the trial runs.

    "Our bus started at noon from the Hong Kong Boundary Crossing Facilities and ran all the way to Zhuhai in about 40 minutes," he said, adding that "the journey was smooth."

    Alan Chan, secretary of another trade association who participated in the trial runs as a passenger, said the clearance procedures at boundary crossing facilities of the three places all went on well and smoothly.

    "The boundary crossing facilities of Zhuhai and Macao, in particular, are operated in a collaborative (合作的) way, which helps remarkably shorten the time needed for the clearance procedures," he said.

    The HZMB, situated at the waters of Lingdingyang of Pearl River Estuary, is a mega-size sea crossing linking the Hong Kong SAR, Zhuhai city of Guangdong Province and the Macao SAR.

    The 55-km bridge is the longest bridge-and-tunnel (隧道) sea crossing in the world.

    The bridge is meant to meet the demand of passenger and freight land transport among Hong Kong, the Chinese mainland and Macao, and to establish a new land transport link between the east and west banks of the Pearl River.