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 Tooth Decay is a damage to a tooth's surface. It happens when bacterium in your mouth starts making acid that attacks the tooth's enamel. If tooth decay is not treated, it can cause pain, infection, and even tooth loss. The bacteria feed on sugar we eat and drink, they turn sugar into acid. The main causes if tooth decay are sugary drinks, and sweet, sticky food. The more sugar you eat, more acid is produced, the more teeth is prone to decay. To prevent tooth decay, we must brush our teeth with toothpaste after eating. We can also decrease sugary snack and eat tooth-healthy food, like fruits and vegetables and fruits. God gave us our teeth, we must take care of them.

Captain Columbus  9 A.M.  Aug. 3, 1492 It was a cool morning on August. I woke up early with great excitement, I was going to board one of Columbus' ships, Nina, as a crew with Columbus! I went to Palos, Spain. All crews gathered there. There were three large ships there, Santa Maria, Pinta, and Nina. Some crews are extremely excited about this expedition, but the others said that the ship will fall of  the earth. Columbus was late and he apologized. Nina on the left The journey started shortly after he arrived. Crowds gathered to see the ships go, they waved at us and shouted joyfully, some cheered. We started to sail west. The harbor became smaller and smaller as the ship moved. It was the most wonderful feeling in the world. The breezes blew by, and the waters were peaceful. Ah! What a day! 12 P.M.  Aug. 3, 1492 The ship was suddenly filled with a pleasant smell. I realized that it was lunchtime. All men on board headed to the cafeteria. The cook  made some t...

 Snowboarding, skiing, and surfing are popular sports that we know. But let's say that you don't live near any snow, but you live near the beach. What to do? There is a sport that you can try, called Sandboarding. It's very like snowboarding. Instead of doing it in the snow, you do it on sand. When we snowboard, we go down a hill. When we sandboard, we go a dune. A dune is a mountain made out of sand. To try this sport, all you need is a sandboard. A sandboard is similar to a snowboard or surfboard. Sandboard are harder to find, because sandboarding is not as popular as snowboarding. It is only popular in hot countries. Sandboarding probably will never be popular like snowboarding, but there's a big advantage. You can only go snowboarding in the winter. When the snow is gone, you can't snowboard anymore. In the other hand, you can sandboard all year!

Have you ever rowed a boat? There's is a extreme spot that also take place on a boat, but it's mush harder than rowing a boat. This sport is called White Water Rafting. White Water Rafting is a sport on a river. The river usually has very large rocks. This sport is called White Water Rafting because when the water goes over the rocks, they turn white.  A raft is a long, flat boat. There're usually five or six person on each raft. At the beginning, the boat moves slowing on the calm water. However, the raft starts to travel quicker and quicker on faster parts of the river. As the raft is moving, people on the raft must control it. They have to avoid crashing on the rocks and other obstacles. And they must not let the raft fall over. Some people often fall into the river, but it is not a problem, they could just climb back to the raft. Even if you don't fall into the river, you get very, very wet.   You don't need to practice rafting for a long period. White water Raf...

Rock climbing is a popular sport, but there is another climbing sport, called Ice climbing. Ice climber need a healthy and strong body.  In rock climbing, you climb mountains or hills. But in ice climbing, you climb ice. Ice climbers climb frozen waterfalls, glaciers. Some times, they climb on mountains that has ice on some place. When they climb parts on the mountain that doesn't have ice, they're rock climbing. But when they climb parts with ice, they are ice climbing. People need equipment to climb ice. In 1908, a climber invented a special boot, called crampons. These boots made ice climbing easier and secure. In the 1960s, another climber made special axes. After that, more people are disposed to ice climbing. A lot of people like ice climbing because they like to challenge themselves. Some even say that when you get to the top of a glacier, it's the best feeling in the world.

Wingsuit diving (or Wingsuit flying) is a sport. A wingsuit diver wear a special outfit with long sleeves that look like wings. He also wears a helmet and a parachute. Like bungee jumpers, the wingsuit diver jump from a high place. However, they jump from a place even higher, bridges and buildings are too low.  The wingsuit let the diver glide through the air. The air lifts the suit's "wing". The diver finally land with his parachute. Wingsuit diving is very strenuous. It's hard to control the wingsuit. In order to become a wingsuit diver, you must parachute from a plane at least two hundred times!  Wingsuit diving is very rare, but it is becoming more and more popular each year. Now there is also a yearly event called World Wingsuit Championship.

Bungee jumping is an extreme sport. It is very dangerous, you should only do it with a professional teacher.  Bridges are the most popular places for bungee jumping. When you go bungee jumping, you start from a lofty spot (for example, a high bridge). A long rope is securely tied your feet, and the other end is tied to the bridge. When you are ready, you jump off the bridge, and you fall to the ground super fast (Yikes!). After that people pull you up.   For some people, bungee jumping is very fun. While some people say that bungee jumping is scary experience. They say they thought that they would die as they fall. Why do people go bungee jumping? Some people want to overcome their fear. Maybe a person is afraid of heights.  He might think, "If I can go bungee jumping, I would never be afraid of heights anymore." Some people enjoy bungee jumping because it feels like flying. Others just wanted to try something new and thrilling. In 1976, the first bungee jumping happ...