It's Friday morning in the year 2050, and you're running late. You got carried away watching the music video that is playing in the corner of your bathroom mirror while you were brushing your teeth. How will you get to your office at Mega Giga Industries on time?

    A quick check of your Internet-connected refrigerator tells you your train is a bit behind schedule, too. So you decide to drive your environmentally hydrogen fuel（环保氢燃料）car instead-or rather, let your car drive you. It's programmed to know the way and it will get you there without getting lost.

    Settling into your office chair, which changes color to match what you're wearing, you pick up yesterday morning's newspaper. Printed on reusable electronic paper, it rewrites itself. Now it's time for your big meeting. Uh-oh! You've left your handwritten notes at home. No problem. The smartpen you used has stored an electronic copy of what you wrote.

    Your wristwatch videophone（可视电话）suddenly rings. Your best friend's face pops up on the screen asking what you're doing this weekend. Will you play virtual soccer with the U.S. Olympic team? No, no. Your friend says, so you have to take the new elevator (made of microscopic fibers many times stronger than steel) 60000 miles into space.

    Could this scene really take place in just a couple of decades? The researchers who are now developing all these things think so. These high-tech products（高科技产品）may be as common in 20 years as cell phones today.

    When he was driving home one evening on a country road, Joe saw an old lady, stranded（抛锚）on the side of the road. He stopped in front of her car and got out. Even with the smile on his face, she was worried. He looked poor and hungry. He knew how she felt. He said, “I am here to help you, madam. Why don't you wait in the car where it's warm? By the way, my name is Joe.”

    She had a flat tire（轮胎）.Joe crawled under the car, changed the tire. But he got dirty and his hands hurt. She could not thank him enough and asked him how much she owed him. He told her that if she really wanted to pay him back, the next time she saw someone who needed help, she could give that person the assistance he needed, and Joe added, “And think of me.”

    She drove off. A few miles down the road the lady saw a small restaurant. She went in. The waitress had a sweet smile, and was nearly eight months pregnant（怀孕）. The old lady wondered how someone like her who seemed poor could be so kind to a stranger. Then she remembered Joe. After the lady finished her meal, the waitress went to get her change from a hundred-dollar bill. But she stepped right out of the door.

    When the waitress came back, she noticed something written on a napkin, “I am helping you because someone once helped me. If you really want to pay me back, here's what you do—Do not let the chain of love end with you.”

    That night when she got home, she was thinking about the money and what the lady had written. She and her husband needed money with the baby due next month. She knew how worried her husband was, and as he lay sleeping next to her, she whispered, “Everything's going to be all right. I love you, Joe.”

The Truth About the Environment

    For many environmentalists, the world seems to be getting worse. They have developed a hit-list of our main fears: that natural resources are running out, that the population is ever growing, leaving less and less to eat, that species are becoming disappeared in huge numbers, and that the planet's air and water are becoming ever more polluted.

    But a quick look at the facts shows a different picture. First, energy and other natural resources have become more abundant, not less so. Second, more food is now produced per head of the world's population than at any time in history. Fewer people are starving. Third, although species are indeed becoming disappeared, only about 0.7% of them are dying out in the next 50 years, not 25-50%, as has so often been predicted. And finally, most forms of environmental pollution either appear to have been best cured not by limiting economic growth, but by accelerating it.

    Yet public opinion surveys suggest that many people hold the belief that environmental standards are declining and four factors seem to cause this gap between what they know and what the reality is.

    One is the unbalanced budget for scientific research. Scientific funding goes mainly to areas with many problems. That may be wise policy, but it will also create an impression that many more potential problems exist than is the case.

    Secondly, environmental groups need to be noticed by the mass media. They also need to keep the money rolling in. Understandably, perhaps, they sometimes overstate their arguments. In 1997, for example, the World Wide Fund for Nature issued a press release entitled: „Two thirds of the world's forests lost forever'. The truth turns out to be nearer 20%.

    A third source of confusion is the attitude of the media. People are extremely more curious about bad news than good. Newspapers and broadcasters are there to provide what the public wants: That, however, can lead to significant misunderstanding. An example was that America came across EI Nino(厄尔尼诺) in 1997 and 1998. This climatic phenomenon was accused of breaking tourism, causing allergies, melting the ski-slopes, and causing 22 deaths. However, according to an article in the Bulletin of the American Meteorological Society, the damage was estimated at $4 billion but the benefits amounted to some $19 billion.

    The fourth factor is poor individual knowledge. People worry that the endless rise in the amount of things everyone throws away will cause the world to run out of places to dispose of waste. Yet, even if America's trash output continues to rise as it has done in the past, and even if the American population doubles by 2100, all the rubbish America produces through the entire 21st century will still take up only one 12,000th of the area of the entire United States.

    It is extremely important that we look at the facts if we want to make the best possible decisions for the future. It may be costly to be overly optimistic, but more costly still to be too pessimistic.

A huge lake of salty water appears to be buried deep in Mars, scientists reported this week. The presence of water raises the chances of finding life on the red planet. The discovery is based on observations by a European spacecraft. It has excited experts. Water is necessary for life, and scientists have long hoped to prove that it is present on Mars.

Cassie Stuurman is a geophysicist at the University of Texas. In 2016, she found evidence of a huge ice deposit(沉积)on Mars. “If these researchers are right, this is the first time we've found evidence of a large water body on Mars. ”Stuurman said. Researchers are not yet sure how deep the area of water is. So, they cannot say whether it is an underground pool, or just an area of soft and wet soil.

In order to find the water, Italian researchers examined radar signals. The signals were collected over three years by the European Space Agency's Mars Express spacecraft. The results suggest that a 20-kilometer-wide water body lies below ice that is 1.5 kilometers thick. They believe the area is close to the planet's southern pole.

    Mars is very cold, but salt in the water may have kept it from freezing. It is the same as when you put salt on a road to prevent ice from forming. The water would be extremely cold, right at the point where it's about to freeze. And it would be salty. Such conditions are not ideal for life to form. But, she said there are bacteria on the earth that have been able to survive in similar conditions.

Mars has been a popular planet for exploration, with some groups placing instruments on its surface and others examining it from space. In May, NASA launched another spacecraft, the InSight Mars lander which will dig deep into the data under the surface after it reaches a flat area of the planet in November.

    Depression and suicidal thoughts have doubled in young Americans, according to a new study from the American Psychological Association.

    Likely triggers? Cell phones and social media.

    "More US adolescents and young adults in the late 2010s, vs the mid-2000s, experienced serious psychological distress, major depression and more attempted suicide (自杀)", says lead researcher Jean Twenge, professor of psychology at San Diego State University. "These trends are weak or non-existent among adults 26 years and over, suggesting a generational shift in mood disorders instead of an overall increase across all ages."

    Twenge believes this trend is partially due to the explosion of digital culture over the past decade, which may have twisted modes of social interaction enough to affect mood disorders.

    The study analyzed data from the National Survey on Drug Use and Health, which tracked drug and alcohol use and mental health issues in more than 200,000 youths aged 12 to 17 from 2005 to 2017 and almost 400,000 adults from 2008 to 2017.

    Major depression in the last 12 months increased by 52 percent in kids from 2005 to 2017 and 63 percent in young adults aged 18 to 25 from 2009 to 2017. There was also a 71 percent jump in young adults experiencing serious psychological distress in the previous 30 days from 2008 to 2017.

    So what's so different now? Twenge says research shows young people just aren't getting as much shuteye as they did in previous generations.

    Whereas older Americans might have established more stability in their lives, sleep-disrupting social stressors are likely at their peak for teens and young adults in this digital era, she says. Older adults are also less likely to let devices interfere (干预) with sleep.

    These results suggest a need for more research to understand how digital communication versus face-to-face social interaction influences mood disorders and to develop specialized interventions for younger age groups.

    Her suggestion? Put your phone down at least an hour before bedtime.

    When I was about 12 years old, my older brother, James, smuggled a BB gun into the house. Our parents had told us many times that we were not allowed to bring home guns or knives, even if they were just toys. Having any form of weaponry in our home was strictly forbidden.

    James brought me to his room. He opened his closet door and took out a shoebox that was buried beneath a heap of clothes. The BB gun was inside. I was immediately enamored by the shiny barrel.

    "Can I shoot it, Jamesie?" I asked, hopefully.

    "Noway,"James said, taking it from me and putting it back.

    One day, when no one was home, I went into James' closet and took it out. For some in explicable reason - I have no idea what I was thinking - I went to the front window of the second floor in our row house. I cracked the window open. I pointed the gun outside and shot. I quickly shut the window and peeked outside.

    In a matter of seconds, old Mr. Schlosberg came out of his grocery store. He looked back at his store window. He looked up the street. He looked down the street. Then he looked straight across to our house.

    Thankfully, Jamesie made it home before Mother or Father.

    As he stepped through the door, I could hear old Mr. Schlosberg call his name. "James, James," he called. "Come here, son."

    After several minutes, James ran back across the street and into the living room. I had retreated into the kitchen. "Alma!" he screamed. "Get out here! You cracked Mr. Schlosberg's window with my BB gun!"

    "Oh, please, Jamesie," I begged. "Don't let him tell Mother. She will whip my bottom real good!" Jamesie sighed. He wiped my tears and went back across the street to Mr. Schlosberg's. I don't know what James said to that man, but there was never a mention of the incident again.

    Years later, I found out Jamesie had used the money he got from his newspaper route to pay for Mr. Schlosberg's cracked window. He only got one cent for every paper he delivered. He managed to pay back the debt just before he went off to fight in World War II.

    Since that day, I have never touched a gun: a BB gun, a water gun, a real gun, or any other type.