Everyone has teeth. They play several very important roles. Without teeth, we can’t chew food! They also help us pronounce properly. Also, your clean, white teeth make you look beautiful when you smile! But how much do you know about your teeth? Do you k
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Dogs are very lovely. Many people in the world love them very much. Dogs are very smart, loyal, cute and friendly. In fact, they can be our good friends. There’s a saying that goes “The dog is man’s best friend.” If you have a dog at home, you will kn
Weather affects our daily lives a lot. We have to wear different clothes depending on the weather. If it’s cold or snowing, we prepare warm clothing; if it’s raining, we prepare an umbrella. People hear about the weather forecast on the TV news every da
The sun is a star and it is 330,330 times larger than the Earth! More than 1 million Earths could fit inside the sun. The sun provides the Earth with 126,000,000,000,000 horsepower of energy every day.
⊙ A fetus develops fingerprints at the age of 3 months. ⊙ Every person has a unique tongue print. ⊙ According to German researchers, the risk of heart attack is higher on Monday than any other day of the week.
Atoms are the basic building blocks of ordinary objects. An atom is the smallest part of an element that can exist on its own. In fact, everything in the universe is made of atoms. For example, a chair, the air, and even humans are made up of atoms!
New NASA satellite data reveal the latest signs of global warming. According to NASA scientists, more than 2 trillion tons of land ice in Greenland, Antarctica, and Alaska have melted since 2003.
The ozone layer is a layer of gas in the upper atmosphere. It protects humans and other living things from the harmful ultraviolet (UV) rays of the sun. The ozone layer was discovered by the French physicists Charles Fabry and Henri Buisson in 1913. In th
Last Tuesday, U.S. researchers discovered what appears to be the oldest imprint of a prehistoric insect. The imprint was found at a rocky outcrop near a large shopping center in Massachusetts.
Last week, American researchers said that Jupiter has a rocky core that is more than twice as large as previously thought. Scientists at the University of California, Berkeley in the U.S. found that Jupiter’s core is an Earth-like rock that’s 14 to 18 t
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