1 . A spoonful of pickles (泡菜) can sometimes make a meal taste way better. Recently, a new kind of pickle, digital (电子的) pickled vegetables, is being discussed. It refers to the videos people watch while eating that make their food more delicious.

The topic received more than 16 million clicks on Sina Weibo and about 100,000 people joined in the discussion. Instead of being accompanied (陪伴) by friends and family during a meal, many young people in China are watching short videos while eating. Many believe that their food is more delicious with the “digital pickles.”

Can this habit affect your diet? According to research in 2019, you may eat more! The research team conducted the first test. They asked 62 volunteers to follow different eating patterns(模式) on four different days. The patterns included eating while looking at the mobile phone, reading magazines, and without distraction (干扰).

After the test, the team discovered that eating with a distraction increased the amount of food that people take in by about 15 percent.

To explore (探究) the reason, the team conducted another test. They invited two groups of people: one group ate while listening to an audio clip about another person eating, and the other listened to a clip (片段) that helped them imagine themselves eating. The results showed that the second group ate less because they paid more attention to their meals. When eating with the "digital pickles," our attention can be distracted(分歧), which leads to eating more than expected.

The study suggests that if you’re eating or drinking while your attention is distracted by a highly engaging(投入的) task, you’re less likely to be able to tell how full you feel.

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7 . If a pancake could dream, it might long for legs so it could jump off your breakfast plate in pursuit of a better, unchewed life. But legs aren’t necessary for something as flat as a pancake to jump around. A group of scientists have designed a pancake-shaped robot that can jump several times per second and higher than seven times its body height. The new robot named Hop, which swiftly jumps without feet, is an important contribution to the soft robotics.

Many ground robots move by rolling or walking. But it’s more efficient for robots to jump over obstacles (障碍物) than to go around them. Although jumping can offer some robots a competitive edge, engineering that ability has been a challenge for robotics researchers. Some soft robots that store energy can perform a single impressive jump very infrequently. Some lightweight soft robots that don’t store energy can jump frequently but can’t jump high or far enough to successfully cross an obstacle.

For inspiration, the researchers looked to gall midge larvae (瘿蚊幼虫) that miraculously throw themselves across distances 30 times as long as their loglike bodies. A gall midge larva bends its body and squeezes the liquid in its body to one end, making it rigid (僵硬的). The accumulation of liquid builds up pressure, and releasing the pressure sends it soaring (飙升). The robot’s body doesn’t resemble (像) that of a gall midge larva, but it jumps like one. Its body is made of two small plastic bags printed with electrodes; the front bag is filled with liquid and the back one is filled with the same volume of air. The robot uses electricity to drive the flow of liquid, which causes the body to bend and generate force with the ground, resulting in a jump. And the air bag imitates the function of an animal’s tail, helping the robot keep a stable position.

While the robot is currently restricted to Earth, it might be right at home exploring another planet. If this is true, the researchers robot might jump over dusty rocks and large holes on the moon or Mars, going where no pancake has gone before.

8 . A team from Newcastle University and Northumbria University in the UK has found that the thin, root-like threads produced by many fungi (真菌) can potentially be used as a biodegradable, wearable material that’s also able to repair itself.

In their tests, the researchers focused on the Ganoderma lucidum fungus, producing a skin from branching thin threads, which together weave into a structure called a mycelium (菌丝体). With a little more work, the fragile skins could serve as a substitute for leather, satisfying environmental and fashion tastes.

“The results suggest that mycelium materials can survive in dry and unfavourable environments, and self-repairing is possible with minimal intervention after a two-day recovery period, ” write the researchers in their published paper. However, the process used to produce these materials tends to kill off the fungal spores (孢子) that help the organism regenerate itself.

A new approach involving a mix of mycelia, proteins, and other nutrients in a liquid encouraged the growth of a skin. The results are currently too thin and delicate to be turned into a jacket. However, the researchers are confident that it’s possible that future innovations could turn it into a tougher skin, possibly by combining layers or plasticizing in glycerol. Crucially, the production process didn’t kill off the fungal spores. Tests on the material showed that it was indeed able to replace holes made in it. The material was as strong as before, though it was still possible to see where the holes had been.

“Due to their functional properties, the ability of this regenerative mycelium material to heal micro and macro defects opens interesting future prospects for unique product applications in leather-goods replacements such as furniture, automotive seals, and fashion wear,” write the researchers.

There’s a long way to go here before you’ll be wearing clothes made out of fungus. The growing and healing processes take several days to happen at the moment for example, something which could be sped up over time.

9 . Twelve-year-old Catherine has a lot of friends—632, actually, if you count up her online friends. And she spends a lot of time with them.

But is it possible that Catherine’s online friendships could be making her lonely? That’s what some experts believe. Connecting online is a great way to stay in touch, they say. However, some experts worry that many kids are so busy connecting online that they might be missing out on true friendships.

Could this be true? During your parents’ childhoods, connecting with friends usually meant spending time with them in the flesh. Kids played Scrabble around a table, not words with friends on their phones. When friends missed each other, they picked up the telephone. Friends might even write letters to each other.

Today, most communication takes place online. A typical teen sends 2,000 texts a month and spends more than 44 hours per week in front of a screen. Much of this time is spent on social media platform.

In fact, in many ways, online communication can make friendships stronger. “There’s definitely a positive influence. Kids can stay in constant contact, which means they can share more of their feelings with each other,” says Katie Davis, co-author of The App Generation.

Other experts, however, warn that too much online communication can get in the way of forming deep friendships. “If we are constantly checking in with our virtual world, we will have little time for our real-world friendships,” says Larry Rosen, a professor at California State University. Rosen also worries that today’s kids might mistake the “friends” on the social media for true friends in life. However, in tough times, you don’t need anyone to like your picture or share your blogs. You need someone who will keep your secrets and hold your hand. You would like to talk face to face.

10 . On Saturday, Jacob Kohut finally had breaktime during his 12⁃hour standing guard outside the U.S. Capitol. He could have spent his break resting. Instead, he sat in the back of a Humvee, teaching students via his laptop how to play Beethoven’s “Ode to Joy”, which meant he was on double duty, as an active member of the National Guard and as a devoted school band teacher.

“I’m a soldier for the National Guard, but I’m as much a solider for music education,” he says.

When on duty, Kohut’s days began in the morning with teaching his elementary class remotely from the drill floor of DC Armory, finishing the lesson minutes before his Guard shift started at 10 a.m. Later in the day, during his break, he would go online to teach his middle school students from the back of a Humvee.

Music has always been a driving force in Kohut’s life. He was a saxophone player throughout high school, and finally earned his Doctor degree in music composition at George Mason University.

“What I really wanted was to teach,” says Kohut, who is married and has a three⁃year⁃old son. “My mom, who is a single mother, was a music teacher. That’s why I do what I do. She is such a good role model.”

Kohut’s double duty has caught the attention of parents at Canterbury Woods Elementary School.

“I just wanted to share how impressed I am with Dr. Kohut this week,” Susi Britain said. “This morning he taught the band online from DC Armory, in his tiredness — which just seems so beyond the expectations of a teacher in these circumstances.”

But during the long and sometimes stressful hours of standing guard, Kohut said his teaching time offered comfort. As the 11 instruments were played by his virtual students, the familiar melody of “Ode to Joy” rang through the Humvee. In that moment, Kohut realized there wasn’t a timelier tune to teach his students__

“It’s a symbol of unity and peace,” he says. “And that’s what the world needs right now.”