I arrived late one night on a business trip, so I decided to have dinner in the hotel I stayed in. As I was finishing my meal, an elderly couple came in. They were holding hands and had lovely smiles on their faces. They sat three tables from me. I was amazed at the love they showed for each other. It struck me because it was shortly after ending a 20-year marriage and I still had pain in my heart.

    My waiter was also their waiter. As I paid my bill, I asked what their bill was. He told me, and I gave him $40 to pay their bill. He asked if I knew them and I told him “No, I just wanted to repay them for the love that they were showing to each other,” and then I left. The next day I entered the restaurant again. After I had been seated, the waiter who served me the night before told me that the strangest thing happened after I left the restaurant. When the elderly couple went to pay for their meal, they were told that it had been paid. The waiter just told them what I said. They were amazed. They looked around, asked for the bill of two young couples who were seated together, paid their bill and left.

    I smiled and ordered my meal. About 45 minutes later, I finished my meal and was about to head out, but my waiter was nowhere to be found. I explained to the hostess that I needed to pay for my meal and hurry to the airport. She smiled and explained that I would not have to pay, because she felt she should pay for my bill because of the joy brought to the faces of the elderly couple and the amazement of the young couples.

    When I told her that they didn't have to do that, she said with a smile “Love creates Love.”

    Physics is a different world now. Will there ever be another Einstein?

    Scientists say a new Einstein will appear, but it may take a long time. After all, more than 200 years separated Einstein from his nearest rival (对手) , Isaac Newton. Many physicists say the next Einstein hasn't been born yet, or is only a baby now. That's because the searching for a unified(统一的) theory that would explain all the forces of nature has pushed current mathematics to its limits. New math must be created before the problem can be solved.

    But researchers say there are many other factors working against another Einstein appearing anytime soon. For one thing, physics is quite a different field today. In Einstein's day, there were a few thousand physicists worldwide, and fewer theoreticians. Education is different, too. One extremely important aspect of Einstein's training that failed to be considered is the philosophy he read as a teenager. It taught him how to think theoretically about space and time.

    And he was a skilled musician. The interplay between music and math is well known. Einstein would fiercely play his violin as a way to think through a knotty physics problem.

    Today, universities have produced millions of physicists. There aren't many jobs in science for them, so they go to Wall Street and Silicon Valley to apply their analytical skills to more practical and rewarding efforts.

    Besides, those who stay in science don't work alone. It's very difficult to imagine an independent person like Einstein ever tolerating this.

    My wife and I went to this vegan(严格的素食主义的)restaurant to give it a try.As we were eating our pepper and salt tofu, a young lady named Debra walked in. She wasn't aware that the place is vegan and was looking for some meat. My wife and I talked up the place and invited her over to try some of our tofu. Debra tried it, nodded and went out.

    After a few minutes, she and her mother both walked back in. We were having the rest of our meal at that time, so we told her what we had ordered. Debra then asked the waitress to just repeat our order for them. Next, Debra said, "And we want to pay for their meal", pointing to my wife and me. We tried to say no, but Debra wouldn't listen.

    That was not the end of it. Hugs were in order. Debra came over to our table and my wife got up to hug her. Debra hugged my wife and put $100 into her hand. My wife firmly said NO, but Debra insisted. Debra kept talking about our kindness, and we did the same about hers and her mother's. With tears in the eyes, the workers were blown away by this whole exchange between four strangers. I left the waiters a tip that would cover all of our meals and we were on our way.

    I've been witnessing so much kindness, especially over the last few years, as I began to pay more attention. We now have a new favorite restaurant and every time we go there my plan is to pay for someone else's meal.

    As a young child, Ann Makosinski would spend hours experimenting with her toys and other everyday objects around her to create her own inventions.

    Now a first-year Arts student, Makosinski is a well-known inventor. She won the recent Sustainable Entrepreneurship Award of Excellence, which recognizes creative business solutions to social problems一the same recognition was given to Barack Obama in 2014. Her two inventions—the Hollow Flashlight and the e-Drink—have been causing excitement internationally since their creation.

    When Makosinski was 15 years old, she created a flashlight powered by the heat of one's hand. This invention was the result of a 9th grade science project, but her goal was to offer a practical solution to people with unlimited access to power and electricity. "One of my friends from the Philippines told me that she failed school because she had no light to study with at night, so that was kind of the inspiration." Makosinski explained.

    At 12th grade, Makosinski then went on to create the e-Drink. It is a coffee cup that harvests the extra heat of a hot drink while it cools, stores it as electricity in an intemal(内置的）battery and makes it available to charge an external device such as a phone, whose life can now be longer by approximately 10 to 30 minutes.

    "My favorite part of creating inventions would be when you had the idea and you have to physically build it, and it doesn't work out," she said. "So you have to figure out different ways to solve it. A lot of times, I'll give up and I'll come back after a couple of days and I'll take it up again."

    Her advice to other student innovators? "Start now. There's nothing holding you back. Actually, you can do whatever you want." Makosinski said, "If you want to make something, follow your heart, then go ahead. If there's something you really want to do, you will make time for it and you will find time in the day to do your schoolwork."

    Surely, given the near-universal use of home computers and smart devices(设备 )like smartphones and tablets, most of us would suspect that watching TV-seen as out dated or even old-fashioned by some-is on the decline. We probably would. And we would be wrong. A new study on screen time conducted by researchers from Robert Stempel College of Public Health Social Work have found that TV-watching has actually gone up since the moment when smart devices became widely available in 2014.

    "The findings are surprising as it feels like mobile devices are omnipresent, but the television still commands more eyeballs than its more advanced brothers and sisters" said Dr. Jenny Radskey" And there is a growing concern over the screen time of children, particularly very young children, for whom watching shows in front of screens is still the most common way to consume media."

    According to a study published in JAMA (The Journal of the American Medical Association) Pediatrics the increase in the amount of screen time for inns and toddlers(婴幼儿) is telling. Specifically, in 1997 children under the age of 2 spent 1.3 hours in front of TV per day on average, while children between the ages of3 and 5 did the same for 2.5 hours. By 2014, however, the latter group showed no significant change, while the former group more than doubled their time spent watching TV, clocking in at 3 hours per day.

    The research also shows that too much screen time before age 2 or 3 is associated with language development delays, ADHD, and learning difficulties. A child's brain develops rapidly during the first years, and young children learn best by interacting with people, not screens.

    Based on these findings, parents who worry about the excessive amount of time their children spend glued to their smartphones and tablets might do well to pay more attention to their littlest ones, for whom viewing time in front of the TV should be greatly cut down.

    It's not easy being a teenager– nor is it easy being the parent of a teenager. You can make your child feel angry, hurt, or misunderstood by what you say without realizing it yourself. It is important to give your child the space he needs to grow while gently letting him know that you'll still be there for him when he needs you.

    Expect a lot from your child, just not everything. Except for health and safety problems, such as drug use or careless driving, consider everything else open to discussion to help them grow up more independently. If your child is unwilling to discuss something, don't insist he tell you what's on his mind. The more you insist, the more likely that he'll clam up. Instead, let him attempt to solve things by himself. At the same time, remind him that you're always there for him should he seek advice or help. Show respect for your teenager's privacy (隐私). Never read his mail or listen in on personal conversations.

    Teach your teenager that the family phone is for the whole family, which can make them more mature. If your child talks on the family's telephone for too long, tell him he can talk for 15 minutes, but then he must stay off the phone for at least an equal period of time. This not only frees up the line so that other family members can make and receive calls, but teaches your teenager moderation (节制). Or if you are open to the idea, allow your teenager his own phone that he pays for with his own pocket money or a part-time job.