If you have ever been left wondering why your emails are riddled(充斥着) with grammatical errors, or why you can never quite find the right phrase, it may be because you are typing with both hands.

    Our vocabulary becomes richer and our writing style becomes more fluent when we type using just one hand, scientists have found. "Typing can be too fluent or too fast, and it can actually weaken the writing process," said Srdan Medimorec, the lead author of the study conducted at the department of psychology at the University of Waterloo, Canada. "It seems that what we write is a product of the interaction(互动) between our thoughts and the tools we use to express them."

    Using text-analysis software, researchers asked 103 university students to write essays under different conditions, using one hand to type and using both hands to type. The software was used to analyze(分析) elements of the essays, such as range of vocabulary, sentence complexity and the cohesion(衔接) of the writing.

    Researchers found that participants' vocabulary became more advanced when they typed with one hand rather than two. The research team said that by slowing our writing down, typing one-handed allows more time for an internal (内在的) word search, resulting in a larger variety of words.

    In contrast, fast typists might just write the first word that comes to mind. However, it is important not to slow typing down too much. Those who typed essays one-handed in the current study slowed down to about the speed of handwriting.

    This is the first study to show that changing people's typing can make their writing get better. The researchers suggested that the speed of writing could affect writing quality regardless of the tools used, whether they are computers, or pen and paper, although further research would be required to prove that idea.

Events

Long March exhibit

    The Shanghai History Museum is putting on an exhibition to mark the 60^th anniversary of the Long March. On show are more than 220 photos and 40 items that explain with pictures how the communist Red Army drew back from its besieged(被围困的) bases in Jiangxi Province and fought its way to northern Shanxi province in the mid-1930s. Explanations are all in Chinese. The show will end on November 20.

Time: 10:00 am—4:00 pm.

Address: 1286 Hongqiao Road

Admission: 8 Yuan for Chinese/ 15 Yuan for foreigners

Thai elephants

    Eight elephants from Thailand are entertaining visitors at Changfeng Park by riding bikes, playing basketball, balancing on a beam, dancing and blowing a mouth-organ. People are encouraged to have a tug-of-war(拔河比赛) with the animals or lie on the ground and have the elephants walk over them. The elephants give three shows a day at 9:30 am, 3:30 pm and 8:00 pm and there is an additional show at 1:30 pm at weekends. The show will end on November 15.

Address: 189 Daduhe Road

Admission: 30-40 Yuan

Dancing dolphins

    Dolphins jumping from the water to touch a ball, swaying their bodies to music, kissing people and doing math by tapping their tails have made the dolphinarium in Peace Park an attraction for children. Seals and sea lions also perform.

Hours: 10:30 am, 4:00 pm, and 7:30 pm

Admission: 20 Yuan for adults and 10 Yuan for children.

    I have never forgotten the firm belief I had in the arrival through the chimney (烟囱) of the little Santa Claus (圣诞老人), the kind, white-bearded old man who at midnight left in my tiny shoe a present I found the next morning.

    Midnight! It's the perfect hour children don't know. What great efforts I made not to go to sleep before the little old man appeared!

    I had both a great desire and great fear of seeing him, but could never stay awake until then, and the next day my first look was for my shoe. He never failed to carefully wrap (包装) every present for me. I would run barefoot to get my treasure. It never was a very expensive present, for we were not rich. It was a cookie, an orange, or very simply a fine red apple. But it felt so precious that I barely dared to eat it. What a great role imagination plays in a child's life!

    I do not at all agree with the idea that the lies about Santa Claus should be stopped. Doubts and truth come all too soon on their own. I very well remember the first year, when I was five or six, I doubted that it was not Santa Claus who put the cookie in my shoe. Since then, it has never tasted as good as the first few years of my life.

    I noted that my son believed in him longer; boys are more naïve (天真的) than little girls. Like me, he made great efforts to stay awake until midnight. Like me, he loved the cookie baked in Heaven's kitchens. And like me, the first year of his doubts was the last year of the visit of the good old man.

    Judy Wright and her husband decided to move closer to their son, Chris, who lived in Georgia. About a month after the move, Judy fell ill, suffering from her ongoing (不间断的) battle against Parkinson disease.

    Her condition worsened rapidly and she required medical care at home. The family hired a nursing aid who canceled at the last minute. Instead, a woman named TunDe Hector showed up in her place.

    One day, TunDe shared a story with Judy and her family. She remembered a particularly difficult day in 2014, when a stranger had helped her with a kind gesture. She had run out of gas, and with only $5 in her pocket, was walking to a gas station. A man saw her walking and turned his car around. He paid for her gas and gave her all the cash left in his wallet. Upon hearing the story, Judy's son, Chris, took off his hat and said, "That was me!" He was the stranger that had helped TunDe on that difficult day.

    During the care of Judy, the Wright family learned about TunDe's family and her own dream. The nursing aid, TunDe hoped that one day she could become an OB-GYN nurse. Her tuition was past due (逾期) and she had a family to care for, but she was determined to achieve that goal for herself and her family.

    Judy died on July 9,2017. Instead of flowers, her family asked mourners (悼念者) to donate to TunDe's education, to assist her in paying for her nursing school. In less than a week, they raised more than $8,000 and presented her with the surprise check.

    Climate change is perhaps the key issue of our time. Often, however, it is presented to us as being so abstract that it seems impossibly distant. For those of you looking for something a little more concrete, a new report suggests that the effects of climate change may significantly affect coffee.

    The report, put out by The Climate Institute, describes the effects of climate change on various coffee-growing nations and the resultant effects on the plants and those who grow them.

    Coffee Arabica plants, which produce 70% of all commercial coffee, can be adversely affected by even a half-degree change in typical weather conditions. This sensitivity to temperature puts the plant at increased risk of the effects of climate change.

    In Central America the average temperature has risen by a full degree Celsius since 1960. In Ethiopia the average temperature has increased by 1. 3 degrees. This increase is enough to have notable effects on the plants. In Tanzania the productivity per hectare of coffee has fallen by half since the 1960s due to changes in temperature.

    Indeed, studies claim that by 2050 the area of the world suitable for growing coffee will be cut by half. Coffee production is likely to then be pushed to higher elevations (海拔) to take advantage of lower temperatures, but this will not be enough to make up for lost lowland areas.

    Coffee is the second most traded goods by developing nations, and the inability of producer nations to export it could cause dramatic chain reactions in their economies. Millions of people make a living in the production, processing, transport, and sale of coffee; their livelihoods would stand to take a blow as growing areas decrease and prices rise.

    As the temperature keeps rising, your cup of coffee will become much more expensive, and it may also carry an aftertaste bitterer than usual, for all those workers in the coffee belt left without the means to make a living as conditions worsen. Not only that, but the economic effects will cost the West millions in increased foreign aid.

Powerisers

    The ability to jump two meters in the air may not be something you have thought too much about. And most people have never considered running at 30 kilometers an hour. But just stop for a moment and think about how our new product could change your life.

    Your daily journey to your place of work is probably a mad dash for the bus. There is no point in taking your car because there are traffic jams, and anyway the car parks are probably very expensive or, worse still, full. Here is where Powerisers can help. It takes just a couple of minutes to put them on and then you are away, going past others or even jumping over the object which blocks your way.

    That is the practical use for our product, but then there is sport and exercise. Powerisers are set to be the next extreme sport and the deep-fit tools. You can imagine the 100 meters, the high jump or basketball performed by athletes wearing Powerisers. And what better way to build your muscles and keep fit?

    Our product is very simple. It is powered by a superlight spring, which uses the gravitational(重力的) pull from your body weight and pushes you with superhuman strength. There have been no records of serious injury related to the use of Powerisers, but extreme caution is recommended. We strongly advise the wearing of protective clothing, including at least a helmet(头盔).

    Powerisers make you feel as if you were walking on the moon. Now we make two different models: Basic and Professional. The Basic model is designed for the occasional users and costs around $ 500. The Professional model, which is designed for the competitive use, has a strongly-made structure and different springs, though that comes at the increased price of $800. Our Powerisers are guaranteed for two years and will be replaced without question if they fail during that period. That is how confident we are.