Last year DeepMind's AlphaGo programme took on and beat two of the world's best players of the Chinese game of Go（围棋）-an unbelievable achievement seen as a milestone in the development of artificial intelligence (A). That programme was trained by first giving it vast amounts of data from amateur and professional games.

    The new AlphaGo Zero began with a blank board and nothing but the rules of Go and set about playing against itself. Within three days it was so advanced that it took on the previous version, which had taken months to develop, and defeated it by a hundred games to zero.

    DeepMind says that creating knowledge from first principles without learning from human expertise（专门技能）is an important step in developing artificial intelligence. The company's founder Demis Hassabis said this breakthrough could help in real world problems such as designing new drugs or discovering new materials.

    In 1997, Garry Kasparov was defeated by Deep Blue, a computer program written by IBM, running on a supercomputer. This was the first time that a ruling world chess champion was defeated by a computer program in tournament conditions. Superficially, AlphaGo's win against Lee Sedol can be compared to Deep Blue's win against Gary Kasparov, which happened almost 20 years ago. So: what's the big deal? We have to understand the differences between chess and Go.

    In chess, each player begins with 16 pieces of six different types. Each piece of type moves differently. The goal of the game is to seize the other player's king. Go starts with an empty board. The goal of the game is to gain as much territory（领地）as possible.

    Although the rules of Go might appear simpler than those of chess, the complexity of Go is higher. Also, games usually last longer for lots of moves. A typical game in Go might last for 150 moves vs.80 in chess.

Dear Rose,

    My brother is often in a bad mood, which makes me in a bad mood. What should I do?

Jenny,

    It can be hard to be around someone who is in a bad mood. Since you can't change another person's mood, try to focus on what you can control: your own mood and reaction.

    You might find it easier to stay in a good mood if you leave your brother alone when he feels grumpy (脾气暴躁的). The next time he is in a bad mood, go to a quiet place in your house. Read, exercise, draw, listen to music — do something that makes you feel happy.

    Your parents might have some good suggestions for you, too.

Dear Rose,

   I play soccer, but sometimes I play badly. How can I do better? Jarom,

    To be good at anything, determination and practice are important. Listen closely to your coach, watch other players, then practice, practice, practice! Professional athletes continue to practice their sports each day, knowing that if they start to get lazy, they won't keep or develop their skills.

    In addition to practicing with teammates, you can work on drills on your own.

    Learning more about the sport may help too. Your coach can likely direct you to some good resources on skills development.

Dear Rose,

    I was moved up a grade a few years ago. Now, almost everyone in my previous grade asks me why. It wouldn't be a problem, except some boys ask over and over just to be annoying. What do I do?

Allison (by email)

    If you're sure that they are trying to be annoying, you might respond with something humorous. For example, you could say something like "They told me that the lunch lines would be shorter." Use the situation to turn annoying questions into something to laugh about.

    The Hawaii Volcanoes National Park

    The Hawaii Volcanoes National Park, on the island of Hawaii, has two active volcanoes: Mauna Loa, which last erupted (喷发) in 1984, is 13,677 feet (4.17 km) above sea level; Kilauea is next to Mauna Loa and it has been erupting since January 3rd, 1983. It is 4,190 feet (1.23 km) above sea level.

    When to visit

    The park is open 24 hours a day all year round. There are no plants or trees on the lava (火山岩) fields and no protection from the sun, so you must bring sunscreen (防晒霜).

    How to get there

    The best way to get to the park is to take Highway 11. From the airport at Hilo, Highway 11 will take you southward across the eastern part of the island.

    Things to see

    If you want to know more about the park, the Kilauea Visitor Center is surely a stop to make. It is a quarter of a mile (402 m) from the park entrance. There, you can see a great movie about real lava and learn about the island's natural and cultural history. The center is open from 7:45 a.m. to 5:00 p.m. There are also many guided walks and hikes around the park. You must check weather conditions and volcanic activity before hiking alone. If possible, you may drive down Chain of Craters Road to see lava flowing into the ocean.

    Tickets

    Entrance to the park is $10.00 for each vehicle, $5.00 for those who travel on foot or ride a bicycle. Children under the age of 15 are free.

    Educators across the US are calling for major changes to the admissions process in higher education. The Harvard school of Greduate Education, along with 80 other schools and organizations, released a report called "Turning the Tide Making Caring Common” in January, 2016. The report argues that the process schools use to choose students causes major problems.

    David Hawkins is the Executive Director for Educational Content and Policy at the National Association for College Admissions Counseling. Hawkins told Voice of America that most colleges and universities require many things from students when they apply. Schools usually ask for an essay describing a student's interests or why they want to study at that school. The schools also ask for letters from teachers or other responsible adults describing why a student is a good candidate. But, Hawkins says, the area that schools are most concerned about is a student's high school grades and standardized test results.

    The report suggests that paying attention to academic success over other qualities works well for some students but hurts others. In addition, academic success is not the most important quality a student should have. More attention should be paid to showing whether or not a student wants to do well in the world, according to the report.

    The report goes on to state that the best way to change the admissions process is by changing college applications. It suggests that schools should ask for evidence that students care about other people. But the report does have its critics. Bob Schaeffer, Public Education Director for the National Center for Fair and Open Testing, said that every few years, someone makes the same argument for changes, but no real change has happed yet. Even many of the schools that agree with the report still make no changes.

    Lloyd Thacker, Executive Director of the Education Conservancy, said that until a majority of schools agree to make the changes, there will still be problems. However, he said, the admissions process was better in the past. If bad changes can affect the process, so can good ones.

Save the Animals

    Animals are natural resources(资源）that people have wasted all through our history.

    Animals have been killed for their fur and feathers(羽毛), for food, for sport, and simply because they were in the way. Thousands of kinds of animals have disappeared from the earth forever. Hundreds more are on the danger list today. About 170 kinds in the United States alone are considered in danger.

    Why should people care? Because we need animals. And because once they are gone, there will never be any more. Animals are more than just beautiful or interesting. They are more than just a source of food. Every animal has its place in the balance(平衡)of nature. Destroying one kind of animal can create many problems.

    For example, when farmers killed large numbers of hawks(鹰), the farmers stores of com and rain were destroyed by rats and mic. Why? Because of hawks ate rats and mice that multiplied(繁殖)quickly

    Luckily, some people are working to help save the animals. Some groups raise money to let people know about the problem .And they try to get the governments to pass laws protecting animals in danger.

    Quite a few countries have passed laws. These laws forbid(禁止)the killing of any animals or plants on the danger list. Slowly, the number of some animals in danger is growing

    "Dad," I say one day, "Let's take a trip. Why don't you fly and meet me?"

    As a manager from IBM, my father's job filled his day, his thought, his life. While he woke up and took a warm shower, I had fun under the Eiffel Tower. While he tied a tie and put on the same Swiss watch, I rowed a boat across Lake of the Ozarks.

    My father sees me travelling without a purpose, nothing to show for my 33 years but a passport full of funny stamps. He wants me to settle down (安定下来), but now I want him to explore the world.

    He agrees and we meet four weeks later in Rapid City.

    "What is our first stop?" asks my father.

    "What time is it?"

    "Still don't have a watch?"

    Less than an hour away is Mount Rushmore. As he looks up at sculptures of the four Presidents in granite(花岗岩), his mouth and eyes open slowly, like those of little boy.

    "Amazing," he says, "How was this done?"

    A film in the information center shows sculptor(雕塑家) Gutzon Borglum devoted 14 years to the sculptures.

    We look up and I ask myself, "Can I devote my life to anything?"

    No directions, no purpose. I always used to hear those words in my father's voice. Now I hear them in my own.

    The next day we're at Yellowstone National Park, where we have a picnic.

"Did you ever travel with your dad?" I ask.

    "Only once," he says. "I never spoke much with my father. We loved each other—but never said it. Whatever he could give me, he gave."

    The last sentence—it's probably the same thing I will say about my father. And what I want my child to say about me.

    In Glacier National Park, my father says, "I've never seen water so blue." I have, in several places of the world. I can keep traveling. I realize— and maybe a fixed job won't be as boring as I think.

    Weeks after our trip, I call my father. "The photos from the trip are wonderful," he says. "We have got to take another trip like that sometime." I tell him I've decided to settle down and find a fixed job, and I'm wearing a watch.