1 . 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.

2 . The words “caring” and “empathetic” (共情的) aren’t ones normally associated with technology. Yearsley, an Australian enterpriser who is expert in artificial intelligence (AI), is trying to change that.

Yearsley is the founder of Akin, a robotics startup that currently uses a tablet-based system to help users manage the tasks related to home life, whether that’s planning meals or reminding you to pay your cell phone bill. Current home devices made by Google or Amazon or Apple use predictive AI to track patterns, strengthen behaviors and manipulate (操控) buying decisions, some of which, she assumes, are questionable or just unhealthy.

In contrast, the AI that she is developing will be designed to run the human home, encouraging healthful decisions such as taking a nightly walk, refilling the fridge and supporting social interactions like lunches or birthday celebrations with friends. “It’s the hardest AI I have ever built for it’s a complex system,” Yearsley says.

Yearsley began developing the Akin technology in 2017, when she realized the need to better manage the home is hugely ignored. Besides, she realized that women unequally bear the burden of household work. A United Nations’ report estimates that women do2.6 times the amount of unpaid care and domestic work that men do, or close to 30 hours per week in the U. S. alone.

While Yearsley pictures an army of robots someday helping with routine homemade tasks, the first display for Akin will take time and money. Akin has received some early seed money from a handful of investors, and was recently selected as a finalist for tech giant LG Nova’s Mission for the Future program, an annual challenge that seeks to identify businesses having potential to improve life and lead society into the future.

3 . Do you want to find some books to read? If so, here is a list of them.

Adapted from the favorite trips of National Geographic’s travel writers, Journeys of a Lifetime crosses the globe to highlight the world’s most famous and little-known destinations. It presents lots of possibilities, from ocean voyage around Antarctica to horse riding in the Andes. Every continent and every possible form of transport is covered.

Destinations of a Lifetime takes you on a photographic tour of the world’s most impressive destinations. Hundreds of the most amazing locations—both natural and man-made—are illustrated with vivid images taken by the world-class photographers. Destinations of a Lifetime includes all the information: when to go, where to eat, where to stay, and what to do to ensure the most interesting experience.

Popular actor and award-winning travel writer Andrew McCarthy writes the foreword (序言) to this great book, offering 400 excellent destinations chosen by National Geographic’s family. It will appeal to active travelers looking for the next great trip as well as to the many readers who simply love dreaming of visiting faraway and peaceful destinations.

This collection of the 500 most unmissable sights and attractions in the world has been ranked by Lonely Planet’s global community, so big sights such as the Eiffel Tower and the Taj Mahal battle it out for a prized place in the top 10, making this the only list you’ll ever need.

4 . Are you happy with your appearance?     1    

“Almost all the girls with single-fold eyelids (单眼皮) in our class have had double eyelid operations,” Zeng, a Senior 2 student from Chengdu, told Xinhua. Zeng had the same surgery done this summer.     2    

From popular photo-editing apps to plastic surgery (整形手术), it seems that large eyes, pale skin and a skinny body are the only standard for beauty these days. But can following this standard really make us feel good about ourselves?

    3     . According to Huxiu News, over six in ten girls choose not to take part in certain daily activities, such as attending school, because they feel bad about their looks. As much as 31 percent of teenagers avoid speaking up in class because they worry that others will notice their looks.

“Many teenagers are upset about their appearance because they believe in unrealistic standards of beauty,” experts say.       4     Seeing all these things can make anyone believe that they’re too dark, too fat, too short, or too tall.

However, trying to live up to strict standards can make us feel anxious. What troubles us is not just our “imperfect” looks, but the fact that we criticize ourselves too much.

    5     Plus-size models are being featured in some fashion shows. All of us should be just as confident as they are.

6 . Blind people have long desired for brightness, but scientists don’t have the technology. To bring that one step closer to reality, Zhiyong Fan, a materials scientist of the Hong Kong University of Science and Technology, developed a new artificial eye recently. The device, which is about as sensitive to light and has sharper vision and a faster reaction time than a real eyeball, may outperform human eyes.

The human eye owes its wide field of view and clear eyesight to the retina (视网膜) — an area at the back of the eyeball covered in light-detecting cells. The design for a new artificial eye is based on the structure of the human eye and uses a friendly light-sensitive material. At the back of the eyeball, an artificial retina is lined with Nan scale light sensors (纳米级光感器). Those sensors measure light that passes through the lens (晶状体) at the front of the eye. Wires attached to the back of the retina send signals from those sensors to the processor, similar to the way nerve networks connect the eyeball to the brain.

“In the future, we can use this to replace damaged human eyes,” says the lead designer. In theory, this artificial eye could see more clearly than the human eye, because the artificial retina contains about 460 million light sensors per square centimeter while a real retina has about 10 million light-detecting cells per square centimeter. Besides, the artificial eyeball records changes in lighting faster than human eyes can — within about 30 to 40 milliseconds, rather than 40 to 150 milliseconds. Although its 100-degree field of view isn’t as broad as the150 degrees a human eye can take in, the device can see as well as the human eye in poor light.

Hongrui Jiang, an electrical engineer at the University of Wisconsin, though, thinks engineers need a much more practical and efficient way to produce vast series of tiny wires on the back of the artificial eyeball to give it superhuman sight, which is super hard to achieve.

8 . On many travelers’ lists of things to do before they die, you’ll find “See the northern lights” written down. Rightfully so these lights are one of nature’s most jaw-dropping views.

In Sweden, the northern lights usually appear from late March or early April. Your best chance of catching a glimpse of them is on cold winter nights when the sky is clear, dark with little to no moonlight, and cloudless. You need to be away from city lights and go to the countryside. For those willing to brave the cold on winter nights, here are some of the best locations.

Abisko National Park

Abisko Natinal Park is a main location. The scientifically confirmed “blue hole”, a piece of sky over the Tornetrask lake that usually remains clear despite cloudy weather nearby, gives Abisko its own microclimate (局部地区气候), which is suitable for catching the lights.

Jukkasjarvi

The village of Jukkasjarvi only has about 550 people. But don’t let the small population size fool you: Jukkasjarvi owns the world’s first ice hotel and is one of the best places to view the northern lights. The ice hotel organizes guided tours for guests to the Esrange Space Center. There you can eat at a camp outside and see the Arctic winter sky for aurora borealis (北极光). Or why not try to get closer to the northern lights and watch them through an aeroplane window? The ice hotel arranges flights for the amazing northern lights experience.

Gallivare

You can drive a snowmobile to the mountain top in Gallivare for a private light show, or head a few kilometers to nearby villages to watch those lights shining across the dark winter sky. But remember if you do get the chance to see the northern lights in person, never whistle to them. According to ancient Sumi fairy, it brings you bad luck.