Airbags, now found in almost every vehicle, have saved countless lives and largely reduced the severity of injuries in crashes. Similar technology could greatly reduce broken hips (髋部) resulting from a fall, something most seniors fear.

    Dr. Robert Buckman and his start-up company, Active Protective in Allentown, Pennsylvania, has developed a promising solution, a wearable airbag that can protect hip bones in the event of a fall. The idea was the result of Dr. Buckman's years as a doctor at Temple University. He noticed how many elderly people were being brought into hospitals with broken hip due to falls, and how they often never completely recovered from the injuries. He started to ask what he could do for these people, and that was when he started trying to figure out whether there was a way of helping people who were at the highest risk of falling and suffering these kinds of injuries.

    The device is worn much like a regular belt, but on the outside of the clothing, and it includes sensors that monitor the movement of hips. If the device detects that the person, is falling, an airbag opens before the person hits the ground, cushioning the fall. When the wearer hits the ground, the bag reduces the force to the hip bones by 90 percent, enough to avoid the majority of hip injuries.

    With one out of every three people aged 65 and older suffering serious falls each year, Active Protective has a big market for its wearable device. It also has the potential to sizably reduce hip - related health care expenses: Hip injuries among the elderly cost the US health care system in 2012 $30 billion, which doesn't include the long-term care expenses associated with the high percentage of patients that can no longer live independently.

My First Marathon

    A month before my first marathon, one of my ankles was injured and this meant not running for two weeks, leaving me only two weeks to train. Yet, I was determined to go ahead.

    I remember back to my 7^th year in school. In my first P.E class, the teacher required us to run laps and then hit a softball. I didn't do either well. He later told me that I was "not athletic".

    The idea that I was "not athletic" stuck with me for years. When I started running in my 30s, I realized running was a battle against myself, not about competition or whether or not athletic. It was all about the battle against my own body and mind. A test of wills!

    The night before the marathon, I dreamt that I couldn't even find the finish line. I woke up sweating and nervous, but ready to prove something to myself.

    Shortly after crossing the start line, my shoe laces became loose. So I stopped to readjust(调整). Not the start I wanted!

    At mile 3, I passed a sign: "GO FOR IT, RUNNERS!"

    By mile 17, I became out of breath and the once injured ankle hurt badly. Despite the pain, I stayed the course walking a bit and then running again.

    By mile 21, I was hungry!

    As I approached mile 23, I could see my wife waving a sign. She is my biggest fan. She never minded the alarm clock sounding at 4 a.m. or questioned my expenses on running.

    I was one of the final runners to finish. But I finished! And I got a medal. In fact, I got the same medal as the one that the guy who came in first place had.

    Determined to be myself, move forward, free of shame and worldly labels(世俗标签), I can now call myself a "marathon winner".

    October might seem to be pumpkin month in the U.S. The holiday of Halloween (万圣节) comes on October 31. Americans around the country are already using social media to show off their pumpkin growing and carving skills.

    Pumpkins are round, orange fruits related to squashes (南瓜小果) and gourds (葫芦). People use their flesh and seeds for food, but they are also popular decorations in the fall.

    Two big pumpkins recently made headlines in the U.S. A farmer in the northeastern state of Rhode Island broke the record for the largest pumpkin ever grown in North America. Richard Wallace's pumpkin weighed 1,026 kilograms. It broke his son's record from 2015. Ron Wallace's pumpkin only weighed 1,011 kilograms last year. A schoolteacher in the northwestern state of Washington brought her large pumpkin to an event in California. Her pumpkin was the champion, weighing 866 kilograms. It turns out that Cindy Tobeck's pumpkin grew from one of the seeds from Ron Wallace's pumpkin from 2015.

    While those pumpkins are large, they are still not the largest in the world. According to the website BigPumpkins.com, Richard Wallace's pumpkin is only the second-heaviest pumpkin of the year. A man in Belgium produced a pumpkin that weighed almost 1,200 kilograms. Smithsonian magazine wrote a story about people who try to grow large pumpkins. In 35 years, the size of record pumpkins has grown from about 225 kilograms to over 1,000 kilograms. Pumpkin farmers trying to grow record fruits are taking the seeds of champion pumpkins from one year and breeding them with other large pumpkins.

    But people are not just growing pumpkins. They are carving them, too. One Twitter user from Britain recently posted a photo of a pumpkin designed to look like U.S. presidential candidate Donald Trump. No word of a Hillary Clinton pumpkin design. But one pumpkin farmer in California allows visitors to shoot small pumpkins out of a cannon（大炮）. The targets? Large paper cut-outs of both Trump and Clinton.

    We tend to think of our dreams as being uniquely personal­nighttime stories built from our own experiences that help us process our day-to-day lives. While dreams can give us a look into our personal selves, scientists have collected data that suggests dreams make their way into our cultural fabric(结构), showing themselves in ways that shape beliefs and expose collective anxieties.

    Roger Ivar Lohmann of Trent University conducted research with the Asabano people of the rainforest of Papua New Guinea, a unique group who didn't have outside contact until 1963. His studies looked at how dreams shape their beliefs and actions.

    According to Lohmann's research, dreams act as a sort of motivator or determinant of Asabano behavior. For instance, a dream may affect the way a person hunts or goes about treating medical conditions. The way dreams determine behavior is due to what Lohmann calls the "night residue" effect. This means that specific memories of dreams can affect the way a person acts when awake and inform their belief system.

    Dreams also seem to have an effect on the way many define themselves within their own cultures, and how sometimes reaching a distinct definition can cause anxiety.

    Matt Newsom of Washington State University spoke with college students in Berlin, and found many students had dreams surrounding conflicting views about their own identities(身份) in relation to what they saw as a return of German nationalism, which is a sensitive subject especially when we think of German identity as it's defined even many years after World War Ⅱ.

    Many students had dreams that centered around anxieties like "Where do I belong?" Many students never talked with one another about identity struggles in their dreams, yet many reported having such dreams. Newsom noted that dreams can be helpful "for identifying (识别) unspoken social and historical anxieties present in a given society."

    All of this research suggests that dreams can do more than help explain the thought of a person; we can learn about entire cultures and collective attitudes as well.

    Nature has provided us with many kinds of resources. It is like a great magician(魔术师), creating wonders on Earth. One of them is the Amazon rainforest, the world's largest and home to millions of plants and animals. Nicknamed" the lungs of our planet", it produces about one-fifth of Earth's oxygen. However, this wonderful natural wonder is now in danger.

    Thousands of fires have broken out in Brazil, endangering much of the rainforest. These flames have lasted several weeks and are believed to be the "most intense" in almost ten years, according to BBC News.

    The Amazon has seen a large number of fires in 2019. Between January and August, there were over 74,000 fires – the highest number since 2013, the BBC reported.

    Forest fires are common during the dry season, which runs from July to October. They are usually caused by natural events like lightning. However, most of the fires this year are believed to be caused by farmers, who use fire as a traditional part of tropical agriculture(农业) to clean land, reported CNN.

    "It's the best time to burn because the plants are dry. Farmers wait for the dry season and they start burning and clearing the areas so that their cattle can have grass," wrote CNN meteorologist Haley Brink.

    The disaster has raised concern(关注) around the world. The Amazon rainforest is important for preventing climate change, said the BBC, absorbing millions of tons of carbon annually. When trees are cut down or burned, the rainforest's ability to absorb carbon is reduced.

    Brazilian climate expert Carlos Nobre told Reuters he's worried. If more than 20 percent of the ecosystem is destroyed, the Amazon rainforest could reach a "tipping point (临界点)", where the thick jungle will turn into a tropical savannah(大草原).

    Nobre warned that it is not far off, with between 15 and 17 percent of the rainforest having already been destroyed.

    The Brazilian government has sent soldiers to fight the fires. Many people have offered their support and called for recovery efforts. For example, Tim Cook, CEO of Apple, said he wanted to donate money and US Actor Leonardo DiCaprio's environmental charity, Earth Alliance, created a donation fund to help deal with the disaster.

    The public are also encouraged to donate to charities concerned with rainforest protection. "Every little bit helps in a bad situation like this," commented Gizmodo.

 Japan is an island country in the Pacific Ocean. As the Japanese students already know, four main islands and more than 3,000 small ones stretch from north to south for about 1,300 miles. As for the climate of the country, well, it's hot and humid(潮湿) in summer, but it is quite cold and wet in Japan during winter. Typhoons, which are violent tropical storms, often threaten Japan during the fall. That's, of course, during the harvest season.

 The population of Japan is about 110,5 million. It may seem hard to believe, but the average population density(密度) of the country is about 678 persons per square mile.

 About two thirds of the entire population lives in Japan's cities. The other one third lives in the suburbs or in the countryside. No other country in southern or eastern Asia has such a large urban, or city population. Tokyo, the capital city of Japan, is the most density-populated city in the world. At last count there were more than 11.5 million people living in Tokyo.