The moon sometimes looks like a silver banana in the night, and it sometimes looks like a big round ball. That’s because the moon has...

We may notice that the Moon has different looks in a month. Each look is a phase of the moon or lunar phase. The Moon is covered with...

Sometimes the moon changes shape during the night. They sometimes change into a bit of silver light, other times it is a big brilliant...

Lunar phases are the stages the moon goes through throughout the lunar cycle, which is about one month in length. In each phase, we see...

Have you ever paid close attention to the moon in the dark sky? Sometimes you cannot see the moon at all, only the stars. Some nights the...

Racial discrimination means that a person adopts an attitude of contempt and exclusion towards people other than his own race. The...

There are many animals in this world, though some of them are disappearing and are endangered. That means the species will disappear and...

Some animals used to be a big part of the Earth’s ecosystem, but nowadays, the amount of those animals has shrinked. The truth is, these...

Endangered species refers to some types of animals that are very close to extinction. This means that there is only a very small amount...

Happy is defined as feeling or showing pleasure or contentment. Some people believe that money does bring happiness, for example, buying...

Bats don’t see the way we do, but they use their ears to see. Echolocation, a skill that many animals use to survive in their conditions....

Echolocation is a process used by bats and many other animals to locate and identify an object. An animal would send out a high-pitched...

Two African Americans came to a Starbucks store to wait for their friends. They wanted to use the bathroom but were refused because they...

Racial segregation is a belief that a race is superior to another race, and thus should be separated from the other races in services,...

Segregation is something in our history that has been a major social problem. The biggest kinds of segregation are racial segregation and...

In April 2018, two black men went into a Starbucks store in Philadelphia, Pennsylvania. Rashon Nelson and Donte Robinson came for a real...

Benjamin Franklin was considered to be one of the greatest American publishers, inventors, scientists, and authors. In addition to this,...

Benjamin Franklin was one of the most famous men in American history. He was well known for his helpful inventions that improved life...

When an animal is extinct, it means that all the animals in that species die. The reason is the shortage of beneficial resources. If the...

When an animal is extinct, it means the species of this kind of animal is gone forever. For example the Yangtze River Dolphin is extinct...