There are countless short videos on YouTube. It's a website for people to post video made by themselves. Many people make a lot of money through doing so. Then, who made the most over the past year?

    YouTube's top-earning celebrity is a 25-year-old video-game-playing young man who shows a strong sense of humor in his videos. He earned $12 million over the past year. Forbes magazine says Sweden's Felix Kjellberg, better known by his handle "PewDiePie", tops its first list of people who have turned short videos into huge piles of cash.

    YouTube stars make money mainly by getting paid to interact with products on their channels and sharing ad revenue(收入) with YouTube. Some also star in movies, write books, go on tour, or sell music. They're a hit with younger audiences and brands trying to reach the next generation of consumers.

    Two acts tied for the second place on Forbes' list, both earning $8.5 million: comedy prankster(搞恶作剧的人) duo Smosh(Ian Hecox and Anthony Padilla) and the Fine Brothers(Benny and Rafi Fine). Dancing violinist Lindsey Stirling ranked fourth with $6 million. Tied for fifth were comedians Rhett and Link(made of Rhett McLaughlin and Charles Lincoln III) and video game commentators(解说员) Olajide Olatunji, known as "KSI," with $4.5 million. Make-up artist Michelle Phan was seventh at $3 million. The No. 8 place was a three-way tie at $2.5 million shared by comedian Lilly Singh, or "Superwoman;" prankster Roman Atwood; and chef Rosanna Pansino.

    Forbes is best known for its list of billionaires and this list marks its first attempt at ranking YouTube stars. It says it measured earnings before management fees and taxes and came up with the figures based on data from online sources such as Nielsen, IMDb and interviews with managers, lawyers, industry insiders and the stars themselves.

    Pound for pound, healthy food is cheaper than junk food, according to a new research from the U. K.

    The Institute of Economic Affairs found that the average cost for a “wide range” of healthy foods was about £ 2 per kilogram, compared with £ 3 a kilogram for less-healthy products such as processed and ready-made foods.

Still, study after study finds that cost is often a barrier when it comes to healthy eating. Convenience drives consumers to care about habits more than prices, the U. K. study concluded. Taste and convenience often play a larger role in people's food choices than price or nutritional quality.

    “Processed foods are extremely expensive, especially when it comes to the nutrient value. Some of the healthiest, most inexpensive foods aren't so attractive. Beans cost next to nothing, especially when bought dry and in great amounts. They take time and some skills to prepare. ” said Ciara Foy, a nutritionist.

    Instead, busy parents reach for the chicken. “You might be getting something that has enough calories to fill you up but you're actually not getting any nutrients, so your body's going to keep wanting more and more food,” said Foy. “And that's why in North America we, re overfed and undernourished (营养不良的).”

    Makers tend to try to promote their product based on perceived health benefits, which makes consumers confused at times with what is a healthy product and how much you should pay for those benefits. The most expensive items, healthy or not, are the ones that end up in the trash. “A lot of people waste a lot of food,” Foy said. It's estimated that more than $ 30 billion of food is wasted in Canada every year. Foy recommends taking a look in your fridge to see what needs to be used up when planning for the next night's meals. “If you actually cut down on the waste you'll find that you can afford healthy food,” Foy said.

    When the kids are out of school, parents are eager to use the holidays for some quality family time.{#blank#}1{#/blank#} While there's great concern among parents about the impact of screens on physical activity and face-to-face communications, parental use of screens is often overlooked. One recent report found that parents spend over nine hours per day with screen media. It's no wonder that families find it hard to have high-quality social interactions.

    Want our kids to put down the phones and tablets?{#blank#}2{#/blank#} It's necessary that we unplug when we ask our kids to do the same. Some family activities we create can help us engage with our kids without the concern of screen time.

    Why not leave the devices at home and go for a tech-free nature walk? It will be an opportunity to make us more connected to the world beyond the screen. Focus on being in the moment and kids may enjoy collecting plant seeds or stones.{#blank#}3{#/blank#}

    A board game night is ideal for bringing family members together and being engaged. Moreover, playing games together fosters social interaction, cooperation, and the development of Social Emotional Learning (SEL).{#blank#}4{#/blank#}

    Some other family activities are wonderfully fun without the use of electronic devices. For example, take the kids swimming, or bring them to an indoor rock climbing gym. Bake a cake for a neighbor or plant a garden.{#blank#}5{#/blank#} Your kids will get lost in the activity, forgetting the devices.

    To be clear, technology has many benefits to parents and children. However, creating some tech-free time can help parents and kids feel more connected to each other.

A. We parents must model that behavior.

B. Even so, too much of a good thing can be bad for family time.

C. However, many of us find it hard to compete with electronics.

D. Parents may learn from their kids about science and nature as well.

E. Best of all, family members can enjoy being engaged in a shared experience.

F. The kids are more likely to have buy-in when they feel like they have a say.

G. All these activities require family members to focus their attention on the task at hand.

    We're surrounded by chemistry in everyday life. Sometimes it is easy to see, like when your science teacher conducts a big experiment in class. At other times, it can be extremely hard to see everyday chemistry at work, but nearly everything you touch or use has some element of chemistry in it.

    Something as simple as toothpaste contains at least three chemicals, if not more. It is the mixture of them and its chemical reaction that keeps your teeth clean. Other things you use every day are created by chemistry, such as hair products, shampoo and soap. Adding detergent (洗涤剂) to water involves chemistry. Without chemistry, we would never have realized that we need soap to get the oil out of clothes or skin.

    Chemistry not only helps us make products for use, but it also helps us understand the world around us. Chemistry helps us understand what the ozone layer (臭氧层) is and how it protects us. Chemistry also gives us sunscreen to protect us from the sun. Thanks to chemistry, we know bleach (漂白剂) can't be mixed with vinegar, because it can produce poisonous gas. Without chemistry, we wouldn't have had fireworks displays on important days like the Spring Festival.

    Chemistry plays a big role in food preparation. Cooking food causes it to go through a chemical change. That is why cooked food often tastes different from raw (生的) food. Baking is a great example of chemistry. Too much or too little of any ingredient makes a difference to the result of baking, for example, the dough (面团) won't rise or the cake will be flat.

    Chemistry isn't something that just lives in a lab; it's something that you come across hundreds of times every day. If you know how chemistry works, you will get a greater comprehension of the science behind some of the simplest looking things.

    The Surprisingly Easy Trick That Can Help You Use Your Phone a Little Bit Less

    The first thing I do in the mornings is look at my phone. That's mainly because my phone is my alarm clock, but once my eyes are open and that screen is lit up in my hands, it's an awfully short trip to checking emails and perusing headlines.{#blank#}1{#/blank#}My emails that early in the morning are mainly junk, and the headlines won't change much before I've brushed my teeth and poured a cup of coffee, right?

    My wife says I'm addicted to my phone. {#blank#}2{#/blank#}I'm not terribly active on social media, but I do enjoy me some idle scrolling（enjoy playing the mobile phone）. And, wow, do these tech companies know how to keep those thumbs constantly swiping up.

    {#blank#}3{#/blank#} While I think we're pretty good about limiting her screen time, it would seem that technology has had its hooks in me from the start. So, I decided to try loosening my phone's grasp on my attention by switching the screen to black and white.

    Changing the display to black and white is very easy. In your iPhone's settings, choose General, then Accessibility. Next choose Display Accommodations, then Color Filters. Tap the toggle on and a list of filters appears. {#blank#}4{#/blank#}

    But no one wants to go through all this every time they want to turn color back on to check out an Instagram story. Clearly, you don't always want your screen to be black and white. After all, there will unavoidably be photos to view and videos to share. {#blank#}5{#/blank#}In the Accessibility menu, tap Accessibility Shortcut and choose Color Filters. Now, pressing the home button three times will switch your display to color, and then back with another three.

A. There's no reason for me to be doing this.

B. We've got a three-year-old child.

C. Choose Grayscale and you're all set.

D. It can help you use your phone a little bit less

E. I disagree, but I can definitely stand to spend less time looking at it.

F. Here comes a surprisingly easy trick.

G. That is what makes setting a shortcut necessary.

    Are you truly happy? What does it mean to be happy? What does it take to achieve happiness? {#blank#}1{#/blank#} The following are a few tips that I follow to create happiness in my life.

    Make a plan for achieving goals that you believe will make you happy. Your moods (心情) will very likely increase if you are going after something you value.

    {#blank#}2{#/blank#} It is easy to begin to think negatively when you are surrounded by people who think that way. On the contrary, if you are around people who are happy, their emotional state will be infectious.

    When something goes wrong, try to figure out a solution (解决办法) instead of being absorbed in self-pity. Truly happy people don't allow setbacks to affect their mood because they know that with a little thought they can.

    Spend a few minutes each day thinking about the things that make you happy. {#blank#}3{#/blank#} And this will lead you to continuous happiness.

    {#blank#}4{#/blank#} Whether you treat yourself to lunch  take a long, relaxing bath or simply spend a few extra minutes on your appearance, you will be subconsciously putting yourself in a better mood.

    Finding the humor in situations can also lead to happiness. Find a way to make light of a situation that would otherwise make you happy.

    Keeping healthy is another way to achieve happiness. {#blank#}5{#/blank#}

A. Surround yourself with happy people.

B. There are some tips in life that lead to happiness.

C. Eating healthy foods or being fit can have a great effect on your mood.

D. These few minutes will help you focus on the positive things in your life.

E. What makes you happy may be different from what makes someone else happy.

F. It is also important to take some time each day to do something nice for yourself.

G. These are important questions for anyone who is seeking happiness to ask themselves.