1 . Today’s grandparents are joining their grandchildren on social media, but the different generations’ online habits couldn’t be more different. In the UK the over-55 s are joining Facebook in increasing numbers, meaning that they will soon be the site’s second biggest user group, with 3.5 million users aged 55-64 and 2.9 million over-65s.

Sheila, aged 59, says, “I joined to see what my grandchildren are doing, as my daughter posts videos and photos of them. It’s a much better way to see what they’re doing than waiting for letters and photos in the post. That’s how we did it when I was a child, but I think I’m lucky I get to see so much more of their lives than my grandparents did.”

Interestingly, Sheila’s grandchildren are less likely to use Facebook themselves. Children under 17 in the UK are leaving the site - only 2.2 million users are under 17 -but they’re not going far from their smartphones. Chloe, aged 15, even sleeps with her phone. “It’s my alarm clock so I have to,’ she says. “I look at it before I go to sleep and as soon as I wake up.”

Unlike her grandmother’s generation, Chloe’s age group is spending so much time on their phones at home that they are missing out on spending time with their friends in real life. Sheila, on the other hand, has made contact with old friends from school she hasn’t heard from in forty years. ”We use Facebook to arrange to meet all over the country,” she says. “It’s changed my social life completely.”

Parents have an important role to play if they want their kids to spend more time in real life. Peter, 38, who spends most of his time in front of a screen, is recently determined to set a better example to his kids. In the evening or at weekends, he would leave his smartphone home and take his kids out to nature.

3 . Smart phones are greatly changing the way we walk down the street. Office workers and young people are walking like the old as they check emails and messages.

Scientists have found mobile phones make us walk more slowly, with modest steps, to avoid falling over. The leader of the study said the walk is just like someone in their eighties. Researchers found people writing a text message walk more than twice as slowly as those without a phone, finding it harder to stay in a straight line.

The scientists examined 252 people walking while reading a text message, writing one, speaking on their phones or without their phones at all. Writing a text is the hardest activity, causing people to look down at their phone 46 percent more, and 45 percent longer, than when reading a message. This led people to walk 118 per cent more slowly than when they were without their phones. People walked almost a third more slowly while reading a text and 19 per cent while talking on the phone.

Smart phones were found to stop people from walking in a straight line, putting them at greater risk of running into other people, cars or street lamps. This increased the need to slow down and take more careful steps.

John Timmis said the idea for this study came from following someone walking down the street in the afternoon, who was walking as if he had had several drinks. I thought it was a bit early for that, then walked up alongside him and saw that he was on his phone. Simply being on the phone changes the way people walk.

4 . The COVID-19 has changed every aspect of our lives, including our eating habits. Comfort food was made for times like these, and it seems the healthy-food trend that took root in recent years is reversing (彻底转变), at least for the time being. Shopping habits have changed. To be in favor of old processed foods like frozen pizza, hot cakes and canned spaghetti, convenience foods with long shelf life are designed.

No judgment here. Money is tight in many families, and busy parents are putting breakfast, lunch and dinner on the table in between video conference meetings. Besides, convenience foods are engineered to taste good and make us feel good (at least in the short term).

But you might want to save room for something green on your plate, if you can find it at the store. That’s because a growing body of research is showing that our food choices don’t just affect our shapes. What we eat also may affect our mood and behavior—and not in the “I can’t believe I ate a dozen cookies in one sitting” sort of way. Indeed, there may be something in the food we’re eating (or not eating) that's influencing our state of mind.

The emerging(新兴的) field of nutritional psychology states that modern Western diets have contributed to increased rates of mental illness, particularly depression and anxiety. Diets that follow a Mediterranean pattern of eating—with a lot of fruits, vegetables, whole grains, nuts, beans, fish and olive oil—have been connected with lower rates of depression. A diet change of just a few weeks has been found to change moods.

As a third of all Americans are reporting that the coronavirus pandemic has done harm to their mental health, we might need nutritious food more than ever.

5 . How many phone numbers can you remember by heart? It’s probably fewer than you would like. Actually, you are not alone. Out of more than 1,000 Americans who were surveyed, more than half said that they couldn’t recall the phone numbers of their friends and neighbors. In their eyes, there is no point in filling their heads with phone numbers if they are all stored in smart phones that are with them almost all the time.

In fact, most people are suffering from a sort of digital amnesia(健忘). more than 90% of those surveyed agreed that they used the Internet as an online of their brains. Rote memorization(死记硬背) was once an important part of modern education, but we just need a click or slide now. That’s making us worse at remembering things.

Researchers found that when people expected to use the information online, they were less likely to remember actual facts, but more likely to remember how to find them. As a result, we are already becoming ones with our computer tools, growing into interconnected systems that remember less by knowing information than by knowing where the information can be found.

However, some believe it isn’t necessarily a bad thing--maybe it gives them more chances to think through things. We certainly acquire more knowledge now than ever, even if it isn’t all stored in our brains.

Even so, I still believe that there are more risks to this new world of memory beyond losing our ability to recall some information such as who the 15^th President was. That kind of information may always be a click away, but the important things are personal ones, like the way your parents smiled at your wedding. It’s harder to recall or find online. If you’re relying on yourself to keep track of those memories, they will be much more meaningful.

6 . Could bike share programs lead to greater cycling safety?

In April 2015, Philadelphia introduced a bike share program. By 2019, there were more than 1,300 bikes and 400 pedal-assisted electric bicycles available. People used them for about 50,000 trips a month.

Before the introduction of the bike share program, the rate of bicycle-car accidents had been gradually increasing. By May 2015, the month after the introduction of the program, the rate was twice that of January 2010.

But the researchers, writing in the American Journal of Public Health, found that from that time through the end of 2018, the rate decreased by an average of 13 percent a year, despite the increases over those years in the number of bicycles on city streets, and even though Philadelphia made no major basic construction changes, like adding many protected bike lanes (自行车道).

The lead author, Ghassan B. Hamra, an assistant professor at the Johns Hopkins Bloomberg School of Public Health, said it appeared that there is safety in numbers: the more bikes on the road, the more car drivers adapt to their presence, and the safer cyclists may be.

“We all know that bike riding is a healthy activity, physically and mentally,” he said, “but there might be concerns that if you introduce a bike share program there will be negative consequences. We saw no evidence of that in Philadelphia.”

7 . A thief returned a mobile phone and thousands of yuan he had stolen from a woman after receiving 21 text messages(短信) from her, a local newspaper reported.

Pan Aiying, a Chinese teacher at Wutou Middle School in Shandong Province, didn’t think her text messages would help to get her mobile phone back.

A young man riding a motorcycle robbed her of her bag, in which there was her mobile phone, bank cards and 4,900 yuan, as she was riding her bicycle home on Saturday evening.

Pan said at first she considered calling the police, but then decided to try to persuade the young man to return her bag. Pan called her lost phone with her friend’s, but couldn’t get through. So she began sending messages.

“Hey, I’m Pan Aiying, a teacher from Wutou Middle School. You must be going through a difficult time. If so, I will not blame you.” Wrote Pan in her first text message, which got no answer. “Keep the 4,900 yuan if you really need it, but please return the other things to me. You are still young. To make mistakes is human. Correcting your mistake is more important than anything.” Pan wrote in another message.

She gave up hope after sending 21 text messages without any answer and planned to call the police the next morning. However, as she left her home on Sunday morning, Pan found her stolen bag lying in the courtyard. Nothing was lost.

“Pan: I am sorry. I made a mistake. Please forgive me. You are so kind even though I stole from you. I’ll correct my ways and be an honest person,” said a letter left with the bag.