Three kinds of bears live in the United States. They are the black bear, the brown bear, and the polar bear.

    Black Bears

    Black bears are the most common of the three. They live in forests in many different parts of the country. Even though they are known as black bears, they are not always black. Sometimes they are brown or tan (黄褐色的) , and a few are even white. Black bears are usually about five or six feet long, and they are the smallest of the three kinds of bears.

    Brown Bears

    Brown bears are found in a few western states and in Alaska. They live in forests as well as in open areas called the tundra (冻土地带). Brown bears are usually light or dark brown and can grow to be very large. In fact, some are eight feet long!

    Polar Bears

    Polar bears can be found in Alaska. It is in a cold area near the North Pole called the Arctic and there are no trees there. Polar bears are white, and they are the largest of the three kinds of ears. They are a little longer and usually heavier than the brown bear.

    Other Interesting Things

    Bears eat different things. Black and brown bears eat fish and other kinds of meat, roots, and berries. Polar bears eat fish, other meat, seaweed, and grass. All three types of bears eat as much food as they can find just before winter. Then during the cold months, they sleep in caves or hollowed-out trees called "dens". They keep them warm. Winter is when the female bears have their babies. All three types of bears have between one and four cubs (幼兽). The cubs are born while the mother bear sleeps!

    All people are afraid of bears. However, bears are actually shy. Most bears try to stay away from people, but still, bears can be dangerous at times.

    When people talk about pigs, they always have the same idea — pigs are ugly, lazy and silly However, pigs have some good qualities. They are as smart as dogs and elephants. 2019 is the Year of the Pig. Here are four popular cartoon pigs.

    Beauty sleep is a real thing, researches have shown that people who have enough sleep look more attractive (有魅力的) to others.

    A few bad nights are enough to make a person look especially "more ugly", their sleep experiments show.

    The researchers asked 25 university students to join in their sleep experiment. They were asked to get a good night's sleep for two nights.

    A week later, they were asked to sleep for only four hour every night for two nights in a row. The researchers took make—up free (素颜) photos of the volunteers after both the good and the bad sleep.

    Next, they asked 122 strangers to have a look at the photos and judge (评价) them on attractiveness, health, and sleepiness, as well as asking them: "How much would you like to make friends with this person in the picture?"

    The strangers were good at judging whether the person they were looking at was tired, and if he was sleepy, his attractiveness score would be low.

    The strangers also said they wouldn't want to socialize with the tired students. The researchers say this is natural for people. An unhealthy-looking face makes people run away. In other words, people don't want to hang around with people who might be ill.

    Dr Brewer, an expert at the University of Liverpool said: "Judgment of attractiveness is often unconscious (无意识的), but we all do it, and we are able to judge on even something small like whether someone looks tired or unhealthy. This study is a good reminder of how important sleep is to us."

Gardening is a popular activity all around the world. But what about people who do not have the space to garden? Not to worry! Today, we will give you information about growing beautiful window boxes. 

Location and safety

Window boxes are not just for the outside edge of the window, they can also sit on other places such as, walls, porches, or front steps. This window box can be on the front steps to a home and the owners can entered their window boxes. 

But safety first: People do get killed by falling window boxes. Make sure your window boxes are safe so they will not come down in a storm. If you feel your window box could be unsafe, you can have an indoor window box.

Light and water

Before you choose plants, check your window box location for light and rain. Window boxes dry out faster than in-ground plants, so they need more water. And if a window box is close to a wall or other structure, it may not get enough rainwater. 

Even if all your windows get little sun, do not give up. You can get a great look using plants that love the shade. Many shade-loving plants like spiderworts and verbenas，have leaves in beautiful colors and interesting shapes. 

The "wow" factor

What gives some window boxes their "wow" factor while others are just so-so? Create a theme! This is a central idea for the plants. For example, you may have a window box that is all cactuses or all edible plants. Or you could select only purple violets or green basil, then you'll have a color-themed window box. 

Besides having a theme, upkeep is also important. You should cut off anything dead, water your window boxes often and change things a lot. 

I'm forty. I left school 22 years ago. I don't regret many things about my school days but there are a few things I wish I'd known earlier as a girl. So here is my list of three things I'd learned at school.

□As a young child you try many new things. If you fail, you try again until you learn. Then you start school where you are usually only praised for doing things correctly. So what happens? You stop trying new things in case you get it wrong. I always remind myself: I won't give up halfway until I make it.

□I always wanted to be the best and one way of feeling good about myself was to see how much better I was than others. There was only one problem with this. When I saw they were better than me, I felt terrible. Now I compare me with myself. I asked myself if I did things as well as I could.

□How much time do you spend worrying about the future? I used to worry a lot. Now I know most things you fear usually never happen. If they happen, then they will most often not be as bad as you expected. In 6 months you probably won't remember most of the things you worry about now.