All matter, all things can be changed in two ways: chemically and physically. Both chemical and physical changes affect the state of matter. Physical changes are those that do not change the make-up or identity of the matter. For example, clay will bend or flatten if squeezed, but it will still be clay. Changing the shape of clay is a physical change, and does not change the matter's identity. Chemical changes turn the matter into a new kind of matter with different properties. For example, when paper is burnt, it becomes ash and will never be paper again. The difference is that physical changes are temporary or only last for a little while. Chemical changes are permanent, which means they last forever. Physical and chemical changes both affect the state of matter.

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Robert James Fischer was born in Chicago. Yet he unlocked the secrets of chess in a Brooklyn apartment right above a candy store. At the age of six he taught himself to play by following the instruction booklet that came with his chess board. After spending much of his childhood in chess clubs, Fischer said that, "One day, I just got good." That may have been a bit of an understatement. At the age of 13 he won the U.S. Junior Chess Championship. He was the youngest Junior Champion ever. At the age of 14 he won the U.S. Championship, also becoming the youngest U.S. Champion in history. Fischer even went on to become the World Champion of chess, but he would also grow to become his own worst enemy. He forfeited the championship to the next challenger without even making a move. The rise of a chess superstar ended with a fizzle.

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Don't let the tigers vanish. These majestic beasts are disappearing at an alarming rate. We should write to our government. If we let them know that we demand the preservation of this species, we can make a difference. We should also donate some of our money to Save the Tigers. Help support those who fight the hardest to preserve the tigers. We owe it to our grandchildren to do something.

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There are many theories about why the dinosaurs vanished from the planet. One theory is that a gigantic meteorite smashed into the Earth. Scientists believe that the meteorite was very big. The impact may have produced a large dust cloud that covered the Earth for many years. The dust cloud may have caused plants to not receive sunlight. The large plant eaters, or herbivores, may have died off, followed by the large meat eaters, or carnivores. This theory may or may not be true, but it is one explanation on why these giant reptiles no longer inhabit the Earth.

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The surface of the Earth is divided into pieces called "tectonic plates." When these plates move, they do not move smoothly. They may rub against each other, creating tremendous friction and energy. The force of these movements can shake the surface of the Earth, resulting in what is commonly known as an earthquake. Some parts of the world get more earthquakes than other parts. The parts of the earth that get most earthquakes are near the edges of these plates.

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Icebergs-giant blocks of ice that float in the sea-come in many shapes, sizes and colors. Some are deep blue or green. Some look like floating sculptures. Old icebergs that have been worn down by weather sometimes look like pillars of ice.

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During the storm, it rained seven inches in four hours. Because the underpass was flooded, and the cars could not get to the school. Many parents were late to pick up the children.

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In many parts of the world, women and children have to walk miles to fill buckets of water from streams and lakes. Often, this water is contaminated with diseases and dirt. Each year in Africa hundreds and thousands of children die from diseases they got from drinking dirty water. Ryan Hreljac decided he had to do something about this. He bagged to raise money to build a well for an African village. This gives people in the village a clean, close water supply.

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A chimpanzee's body is made for climbing and swinging in the trees. First, it uses its long arms to reach a branch. Next, with its flexible hands and feet, it grabs and hooks on to the branch. Finally, it swings from that branch to another branch or tree. 

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Wild chimpanzees are rapidly disappearing. Some people are trying to solve this problem. Otherwise, chimpanzees may one day exist only in zoos. People are trying to save the rain forests and woodlands where the chimps live from being cut down. It will take many people working together to solve this problem. 

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