I am sure we've all come across inspiring quotes（引言）that made us nod in agreement or made us think, "Wow, that's good quotes". But we end up going back to procrastinating（拖延）on whatever it was we were procrastinating on. So is it worthwhile to read these inspirational quotes? Well, that depends.

    Quotes, books, articles, audio programs… all of these things are just tools and they're only effective when you use them. I don't know about you but most quotes I read don't do anything for me. However, every now and then, I will come across one that will positively affect me in some way such as reminding me to be grateful, getting me to work out extra hard at the gym without being pressed by my wife, or never give up when things get tough.

      From my experience, reading quotes is more effective when you're actually trying to motivate yourself rather than just reading them for the sake of reading them. The second you feel the urge to take action, you'd better immediately get up off your chair and take action.

    These quotes aren't for everyone. If you have read tons of them and have never been motivated or had a positive change in the way you look at life or how you treat others, or these quotes don't help you to insist on doing something when you feel like giving up on it, then it's probably not worthwhile to read more of them. If you have done something a bunch of times and it's not giving you the results you want, don't keep doing it. Try something else.

    Now if you've found some value in reading these quotes in the past, continue to make them more effective by letting them guide your life.

    Not all think laughter is the best medicine, but it seems to help. So scientists carried on a new study of diabetes (糖尿病) patients who were given a good dose of humor for a year to prove it.

    Researchers divided 20 high­risk diabetic patients into two groups. Both groups were given standard diabetes medicine. Group L viewed 30 minutes of humor of their choice, while Group C. the control group. did not. This went on for a year of treatments.

    By two months into the study. the patients in the laughter group had lower level of the hormones epinephrine (肾上腺素), considered to cause stress. which is known to be deadly. After the 12 months. HDL cholesterol rises 26 percent in Group L but only 3 percent in Group C. In another measure. C­reactive proteins, a maker of heart disease. drop 66 percent in the laughter group but only 26 percent in the control group.

    “The best doctors believe that there is a physical good brought about by the positive emotion, happy laughter. ”said study leader Lee Berk of Loma Linda University. And other research has found that humor makes us more hopeful. Still, more study is needed, Berk said. The research by Berk found that humor can bring about similar changes in body chemistry. which was proved in the new study. The research result will be presented this month at the meeting in the US. Research at the University of Maryland School of Medicine shows that laughter causes the inner lining of blood vessels to expand. increasing blood flow in a way thought to be healthy.

    “Lifestyle choices have an important effect on health and these are choices which we and patients should pay attention to. rather than prevention and treatment,”Berk said in a statement this week.

    Throughout history, artist, inventors, writers and scientists have solved problems in their dreams. Now, let's have a look together at some of them.

    ⒈Paul McCartney Found Yesterday in a dream

    Paul McCartney is one of the most famous singers/songwriters of all time. According to the Guinness Book of Records, his Beatles song Yesterday(1965) has the most cover（翻唱） versions of any song ever written and, according to record label BMI，was performed over seven million times in the 20^th century.

    The tune for Yesterday came to Paul McCartney in a dream.

“I woke up with a lovely tune in my head. I thought, 'That's great, I wonder what that is?' There was an upright piano next to me, to the right of my bed by the window. I got out of bed, sat at the piano, found G, found F sharp minor—- and that leads you through then to B to E minor, and finally back to E. It all leads forward logically. I liked the melody a lot, but because I'd dreamed it, I couldn't believe I'd written it. I thought, 'No, I've never written anything like this before.' But I had the tune, which was the most magic thing! ”

    ⒉Mary Shelley's Frankentein Inspired by a Dream

    In the summer of 1816, nineteen-year-old Mary Wollstonecraft Godwin and her lover, the poet Percy Shelley (whom she married later that year), visited the poet Lord Byron at his villa beside Lake Geneva in Switzerland. Stormy weather frequently forced them indoors, where they and Byron's other guests sometimes read from a volume of ghost stories. One evening, Byron challenged his guests to each write one themselves.

    Mary's story, inspired by a dream, became Frankentein（科学怪人）.

“When I placed my head upon my pillow, I did not sleep, nor could I be said to think—-My eyes shut ,I saw——with my acute mental vision—-the pale student of unholy arts kneeling beside the thing he had put together. I saw the ugly figure of a man stretch out, and then, on the working of some powerful engine, show signs of life, and tremble with an uneasy motion, extremely frightful. The next morning I announced that I had thought of a story. I began that day with the words, 'It was on a dull night of November', making only a transcript(文字稿) of the cruel terror of my waking dream.”

    The flowers are blooming and the birds are singing as Melinda sits in the rose garden of the nursing home. She is recalling old times as she waits for her family's arrival. The nursing home has been Melinda's new settlement ever since Thomas passed away a week ago. Thomas had fought a long and hard battle against lung cancer for three years. Unfortunately, he has broken the promise that he and Melinda had made: to be with each other for every birthday. Melinda knew this was unrealistic (不现实的) but agreed to the promise for Thomas's sake.

    "Thomas, you are completely a dreamer." Melinda shouted to Thomas as he dragged on about living on an island with his beautiful wife. That's what she loved about him most—he had a vivid imagination. They got married at age eighteen and began having children right away. Mary came within the year, followed by Thomas Benjamin II, Lilly-Ann, and Joseph “Little Joey” George. The family lived an exultant life filled with laughter and love.

    "Mom!" Lilly shouted, but it really sounded like a howl. Melinda had lost herself in thinking about the life she had shared with her late husband. Lilly pushed her down the long dark halls of the nursing home until they arrived at the recreational room.

When the doors opened, Melinda put her hand over her mouth and was completely speechless. The room was crowded with the people nearest and dearest to her and the warmth and love was felt instantly. The night went on; stories and cocktails were shared and everything was perfect.

    However, when Melinda caught a moment to herself she looked around at her family. With a smile on her face, she raised her Manhattan and called out for a toast. “This one is for you, Thomas, though you are not here.”

Imagine turning on the GPS and seeing an image of your car from above. As the car drives, the map follows along in real time, informing you of any traffic, pedestrians, animals or other things nearby. Routes and names of road appear over the live stream. It's like the map has come to life.

This type of map isn't available yet. But it could be very soon. In 2014, the WorldView-3 satellite was sent into space. Even though it orbits Earth at more than 370 miles (600km) away, it can take images of objects on Earth that are just 10 inches (25cm) across. Looking all the way from outer space, it can make out a smart phone held in your hand. It can tell what types of cars are travelling down a road. But it can't identify your face or read the cars' license plate numbers.

According to some reports, this satellite and other US satellites have the technology to take even sharper images, with a resolution of up to around 4 inches (10cm). But US law forbids making these super-sharp pictures public. But the idea that anybody might be able to spy on the entire Earth in such detail may seem scary. Live, high-detail satellite mapping could be used to keep tabs on anybody at any time, without the person's knowledge. Ray Purdy of University College London told CNN that he couldn't imagine what this could mean for privacy. "Most satellites are commercially owned, so if you have money, you can have that imagery. It means anyone can spy on anyone." he said.

At the same time, live, detailed maps of the Earth's surface could aid humanity in amazing ways. Satellite images can help experts track storms as they form and chart their paths. At high detail, live maps of a disaster area could quickly reveal people in need of rescue as well as the safest routes in or out. Satellites images are already helping the police catch illegal fishing operations. Higher detail may make it possible to catch other criminals in the act. The images could also make it easier for farmers to watch over their crops or for scientists to find minerals. Also, these images play a very important role in monitoring the health of forests and other landscapes.

What do you think? Would you like to see everyone accessing high-detail live maps of the Earth's surface? Please share your idea with us on the website.

Five trends to watch in the coming year

The number 21 is connected with luck, risk, taking chances and rolling the dice, all of which seem strangely appropriate for a year of unusual uncertainty. As 2021 approaches, here are some trends to watch in the year ahead.

⒈ Fights over vaccines

As the first vaccines become available in quantity, the focus will shit from the heroic effort of developing them to the equally difficult task of distributing them. Vaccine negotiations will accompany fights within and between countries over who should get them and when.

⒉ A mixed economic recovery

As economies bounce back from the pandemic, the recovery will be inconsistent, as local outbreaks and restrictions come and go — and governments turn from keeping companies on life-support to helping workers who have lost their jobs.

⒊ A less footloose world

Tourism will shrink and change shape, with more emphasis on domestic travel. Airlines, hotel chains and aircraft producers will struggle, as will universities that rely heavily on foreign students.

⒋ An opportunity on climate change

One positive side to the crisis is the chance to take action on climate change, as governments invest in green recovery plans to create jobs and cut emissions. How ambitious will countries' reduction promises be at the UN climate conference, delayed from 2020?

⒌ The year of déjà vu

That is just one example of how the coming year may feel, in many respects, like a second take on 2020, as events including the Olympics, the Dubai Expo and many other political, sporting and commercial gatherings do their best to open a year later than planned.