Easter Island's large and mysterious stone statues（雕像） have made it world famous. These statues, whose likenesses look like humans with huge stone cylinders(柱状物) balancing on their heads like hats, have tourists coming from all over the world. The tourists come to see these works of ancient art carved by the early inhabitants of the island. They come to see the mystery that has puzzled historians for decades.

    Easter Island is located in a remote part of the South Pacific Ocean about 2,300 miles west of Chile. Easter Island covers just 45 square miles and its Polynesian name is Rapa Nui.

    On Easter Sunday 1722, a Dutch explorer named Jacob Roggeveen was the first European to see Easter Island. The early Polynesians carved the statues within the holes of the volcano using only stone tools. Then they moved these huge statues to various destinations throughout the island. These 600 statues range in height from 10 to 40 feet. Some of them weigh as much as 50 tons. How could the early Polynesians lift hundreds of heavy statues out of the volcano? How did they move them across the island to their various locations? All of these questions, as well as many others, remain unanswered.

    The early islanders probably worshiped(崇拜) these eyeless giants until sometime around 1670. In 1680, a war broke out between two groups of islanders. The victors of the war and ancestors of the present inhabitants, broke down many of the statues. In most cases, they broke the necks of the statues.

    Now 15 of the statues on Easter Island have been repaired to their original positions on their stone platforms. Even today, using modern tools and machinery, putting up such large statues and balancing cylinders on top of their heads presents a challenging task.

    Life-Changing Science Discoveries

    Here's a look at some discoveries that have changed the world. It's impossible to rank their importance, so they're listed in the order they were discovered

Micro-organism

    Before French chemist Louis Pasteur began experimenting with bacteria in the 1860s, people did not know what caused disease. He not only discovered that disease came from micro-organisms, but also realized that bacteria could be killed by heat and disinfectant(消毒剂). This idea caused doctors to wash their hands and disinfect their instruments, which has saved millions of lives.

Penicillin

    Antibiotics are powerful drugs that kill dangerous bacteria in our bodies that make us sick. In 1928, British Alexander Fleming discovered the first antibiotic, penicillin, which he grew in his lab. Without antibiotics, infections like strep throat could be deadly

DNA

    On February 28, 1853, James Watson of the United States and Francis Crick of England made one of the greatest scientific discoveries in history. The two scientists found the structure of DNA. Our genes are made of DNA and determine how things like what color hair and eye we'll have. In 1962, they were awarded the Nobel Prize for this work . The discovery has helped doctors understand diseases and may someday prevent some illnesses like heart disease and cancer.

X-rays

    Wilhelm Roentgen, a German physicist, discovered X-rays in 1895. X-rays go right through some substances, like flesh and wood, but are stopped by others, such as bones and lead. This allows them to be used to see broken bones or explosives inside suitcases, which makes them useful for doctors and security officers. For this discovery, Roentgen was awarded the first-ever Nobel Prize in Physics in 1901.

    Best Smartphone Games to Put Your Brain to Test

    I am a fan of NMORPGs. But sometimes I play brain games. Here are four games for you that will surely put your brain to test.

    Real Chess

    Chess has been bursting brains for many centuries, and this virtual(虚拟的) change of chess really brings a new taste. It's not an ordinary game, for it's a 3D virtual chess that lets you play with users from all around the world.

    You can chat with opponents, play with AI, get newbie(新手) tips and much more. The animations and 3D structures are really cool as well.

    Juice Cubes

    Juice Cubes is a light and colorful game full of fruity juice cubes that you need to connect to pop and clear levels. There are multiple types of challenges, power-ups, and more than 550 levels to keep you addicted.

    It might seem easy at the start, but it will burst your brain when you reach higher levels.

    WorldBrain2

    WorldBrain 2 is really a fun word game where you need to guess words based on the number of letters provided. Each word puzzle has a theme category, such as food, human body, color or even space.

    And you can also use hints (暗示) to solve the level when you get stuck. Your vocabulary is sure to be challenged in it.

    Puzzlerama

    Puzzlerama basically joins some of the top puzzles in one single app, making it a perfect app for puzzle lovers. It lets you play popular puzzle games such as flow, jigsaw, unblock, pipes, tangram and more. There are hundreds of levels available for each puzzle type and things get really tough as you advance.

    The game interface(界面) is also very colorful, and smooth animations make the game fun to play.

    In the book The Best Little Girl in the World, Kessa has a serious eating disorder (进食障碍) called anorexia nervosa. But she is not alone. Many people have this eating disorder.

    In the beginning of her story, Kessa is a normal 15-year-old girl. She is good at many things, especially dancing. She has danced for many years and loves it. One day her dance teacher tells her to continue eating right, but maybe lose a few pounds. Once Kessa hears this, she takes things too far. Instead of cutting down on snacks and junk food, she decides not to eat at all. She does not eat breakfast, lunch, or dinner. She begins losing weight and becomes slimmer (更加苗条的) and slimmer. But she loses weight to a point where she is unhealthy.

    As her poor eating habits continue, her parents start getting as much help as possible to cure (治疗) their beautiful daughter. But it is just as hard for Kessa's parents to deal with her disorder as it is for her.

    Every day she exercises to lose more pounds and plans what and when she will eat. Her parents try everything, but Kessa decides not to have any fat on her body.

    Kessa's doctor and parents finally take her to the hospital. She is now so thin that she can hardly walk. There, she is given good care.

    In the rest of the book, Kessa goes through a lot of trouble in order to cure her eating disorder. This book, I think, can help to prevent people from doing this to themselves. It shows the trouble that people go through just to be slimmer, and all the terrible things they must experience to be cured. It is a book I think every teenager should read.

    Arthur Dubois isn't your typical grandfather. That's because at 72 years old, the Chicago resident is a newly discovered hip-hop artist.

    This week, Dubois walked into Haven Studios, a music program on the South Side of Chicago that supports young ambitious artists. The owner of Haven Studios, Andre "Add-2" Daniels, said Dubois claimed he was "young at heart." So, Daniels decided to listen to Dubois' music. He was completely floored. Daniels quickly took videos showcasing Dubois' talents and posted them to Twitter. His tweet went viral, receiving thousands of reactions within a matter of days. Now, Dubois' talents have even caught the attention of some famous hip-hop producers.

    "It's not what you would expect, right?" Daniels says in one of the videos. Dubois music is playing in the background, giving a steady beat that easily invites listeners to dance.

    Dubois said his style was entirely self-taught. He first started teaching himself to produce hip-hop beats about six years ago, after he retired. "I found something to do," he told NPR's Scott Simon. "I had to learn how to do the computer and music at the same time." Dubois taught himself by using the audio editing software. Now he's learning another new skill-social media. Dubois' newfound social media fame has been a little overwhelming for him. "I was shocked," he said. "I broke down and cried because I didn't know that many people liked me." Daniels has helped Dubois set up accounts on Twitter and Instagram for his fans to follow, "I'd never used Instargram, Twitter and all that other stuff," Dubois said. "Because I didn't believe in that stuff myself. But now I've got to have it." The attention doesn't seem to have gone to Dubois' head though-he doesn't really care about getting famous or making money. "I just want to put it out there and let other people hear my music."

Faye and Matthew Gooding and their five young sons appear to have perfect lives. Mrs. Gooding 1 beautiful photos of life in their four-bedroom house on Instagram(一种社交软件), and more than 32, 000 people 2 them. For the couple themselves, 3 , this "materially(物质地) perfect world" was lacking something—so now they are giving up all their 4 to travel around the world with their kids.

This was the last Christmas that the couple spent in their house, which has already been sold. Most of their belongings are 5 too. Shortly their Ford car will be sold and the family will take just one backpack each.

Mrs. Gooding said: "Some friends and family think Matt and I are 6 to be giving up so much. It's been difficult giving up so many possessions. Yet 7 enjoying spending time with the boys, I found myself cleaning the house all day before. The older ones were at school and I thought, 'I 8 see them'. I admitted how I felt to Matt. He agreed it felt as if our lives moved around 9 things—both of us working to 10 the mortgage(贷款) and keep ourselves in our materially perfect world."

    They will leave this month and plan to start their 11 in Sweden where they have friends.

Mr. Gooding added: "People have said 'aren't you worried about stability and safety?'— 12 as we have five small children. It is a (an) 13 because we are giving up so much. But we can't wait to spend more time with our sons without the 14 of everyday routines. We don't know what will happen, but we do know if we didn't do this we would always 15 it."