Hybrid cars are cars that are powered by an electric battery as well as a gasoline engine. Most regular cars have a gasoline-powered engine only. Hybrid cars are more efficient in their use of gasoline.
[호]
Mars probably is the only planet in our solar system that we can live. But living there will be very difficult. In order to live there, you will have to carry everything with you when you leave the Earth. For example, you will have to take water with you
Polar lights are also called northern lights or auroras. Auroras are natural colored light displays. You can see them in the night sky, particularly in the polar zone. So some scientists call them "polar auroras" or "aurora polaris."
The North and South Poles are cold and faraway places. But many animals are living there. For example, you can meet polar bears in the North Pole. And you can meet penguins in the South Pole. Even if you never plan to visit them, now is a perfect time to
Recently, one elementary school in England found an interesting way to help kids learn better. The answer is in the picture. Take a look! Yes, it's a dog. Believe it or not, psychologists in England say that a friendly dog can help children study in scho
Gasoline prices are really high in Korea. This is because gasoline has to be imported from foreign countries. Also, burning gasoline in cars create so much pollution. So, it's very bad for the environment. To solve this problem, an American company named
After a long tiring day, there's nothing better than a good night's sleep. Imagine yourself falling deep asleep. You feel cozy and comfortable. But how would you feel if one of your family members' loud snoring was waking you up from a peaceful sleep?
A company in the U.S. that specializes in bio-genetics recently produced a fish that can glow in the dark. By studying the DNA of the fish, the company was successful in changing the color of the fish. There are red, yellow and green fish. And they can al
Don't you just love the sweet taste of honey? Honey sure goes well with many kinds of food. But for honey lovers in the U.S., there is some bad news. Can you believe that 40 percent of honeybees in the U.S. have disappeared? The scientists don't know th
Yeah, for sure, ninja turtles are famous. But have you ever heard of a worldly known tortoise named George? So, how is this tortoise more special than others? Well, first, George is 80 years old. Second, George is the last known member of his species. So
[이전10개] 91 92 93
