Land Art, sometimes referred to as Earth Art or Earthworks, is a form of art which involves using physical landscapes to create art, taking art out of the museum and into the outside world. Modern Land Art movement really got going in the 1960s when American artists began creating Land Art on a large scale. Today, works of modern Land Art can be seen all over the world, sometimes right alongside much older pieces of Land Art created by people who lived thousands of years ago.

    Land Art, which is not necessarily unchangeable, can take a number of forms. For examples, in 1970 Robert Smithson created the Spiral Jetty（螺旋状防波堤）, made of a collection of stones and mud, in the Great Salt Lake. The American artist made a large jetty in a spiral shape which sticks out into the waters of the lake.

    Reshaping the landscape is a common characteristic of Land Art, which can be created by moving parts around. People can also add things to the environment to create Land Art, like salt, which is added to the Spiral Jetty. It is possible to use plants. In all cases, Land Art is immovable.

    Land Art is designed to gradually form, change, and eventually decay（衰落）. That's one of the biggest differences between Land Art and most of the art one sees in the museums. Some works of art can exist only for a few hours or days. Others are exposed to rain and wind so that they develop and decay over time, which is part of the attractiveness in the eyes of the artists.

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Why Walking Your Dog Is Great Exercise

    Having trouble sticking to an exercise program?Research shows that dogs are actually nature's perfect personal trainers-loyal,hard-working,energetic and enthusiastic.Your friends may skip an exercise session because of appointments,extra chores or bad weather.{#blank#}1{#/blank#}

    Is dog walking really effective exercise?Many people are becoming interested in exercise to help lose excess weight.{#blank#}2{#/blank#}Dog owner-ship and obesity were evaluated in Seattle,Wash.,and Baltimore,Md.,in a study published in the journal Preventive Medicine in September 2008.Dog owners who reported walking their dogs were almost 25 percent less likely to be obese than people without dogs.

    What are the benefits of regular exercise?Dr.Joanna Kruk reviewed medical literature describing the health benefits of exercise.Her research showed that the risk of developing a number of serious health problems is reduced by physical activity and exercise.

    {#blank#}3{#/blank#}It's easy to forget about healthy walking plans,so set the stage for a successful program: Establish a walking schedule; plan to walk 30 minutes total each day.This might include a 10-minute neighborhood walk in the morning and a 20-minute romp at the dog park after work.Or maybe three 10-minule walks or one 30-minute walk fit in better with your day.

    If dog walking is "scheduled" each day,you'll feel more responsible for sticking with your program.{#blank#}4{#/blank#}Most importantly,daily walking your dog will keep it fit and give it an opportunity to utilize their senses while also engaging their mind.

    So,grab a leash,whistle to the pup,and go for a walk-today and every day! Take action!{#blank#}5{#/blank#}

A.Plan for success.

B.Track your progress.

C.This will reinforce your good behavior.

D.Dog walking is a great way to start a healthy lifestyle program.

E.However,dogs never give you an excuse to delay exercising.

F.Plus,your dog will also get used to the routine and remind you when "it's time"!

G.Obesity is affecting about one in every three to four adults in the United States and Europe.

    A new argument has been put forward as to whether penguins are disturbed by the presence of tourists in Antarctica.

    Previous research by scientists from Keil University in Germany monitored Adelie penguins and noted that the birds' heart rates increased dramatically at the sight of a human as far as 30 meters away. But new research using an artificial egg, which is equipped to measure heart rates, disputes this. Scientists from the Scott Polar Research Institute at Cambridge say that a slow moving human who does not approach the nest too closely, is not viewed as a threat by penguins.

    The earlier findings have been used to partly explain the 20 per cent drop in populations of certain types of penguins near tourist sites. However, tour operators have continued to insist that their activities do not adversely（不利地）affect wildlife in Antarctica, saying they encourage non-destructive behavior in tourists, and that the decline in penguin numbers is caused by other factors.

    Amanda Nimon of the Scott Polar Research Institute spent three southern hemisphere summers at Cuverville Island in Antarctica studying penguin behavior towards humans. “A nesting penguin will react very differently to a person rapidly and closely approaching the nest,” says Nimon. “First they exhibit large and prolonged heart rate changes and then they often flee the nest leaving it open for predators（掠夺者）to fly in and remove eggs or chicks.” The artificial egg, specially for the project, monitored both the parent who had been 'disturbed' when the egg was placed in the nest and the other parent as they both took it in turns to guard the nest.

    However, Boris Culik, who monitored the Adelie penguins, believes that Nimon's findings do not prove his own research invalid. He points out that species behave differently – and Nimon's work was with Gentoo penguins. Nimon and her colleagues believe that Culik's research was methodologically（方法论上）defective because the monitoring of penguins' responses needed catching the birds and fitting them with heart-rate transmitters（发射器）. Therefore, argues Nimon, it would not be surprising if they became stressed on seeing a human subsequently.

    Asia is such a vast and diverse continent for anyone dreaming of an escape. Here are some best destinations to visit over the next 12 months.

    Xi'an, China

    Xi'an, China is supreme and then there's the biggie (重要的事物)-the Army of Terracotta Warriors, celebrating 30 years as a UNESCO World Heritage Site in 2017.

    Xi'an is vast, but a relaxed way of living and recent openings have boosted an already superb accommodation market. A crop of new bars and cafes are thrown in here. There's never been a better time to visit.

    South of Tokyo, Japan

    Two cities in south of Tokyo are well worth visiting.

    Yokohama is just a 20-mixinte train journey from the capital and packs considerable appeal with its bayside location, architecture, beer and tasty cuisine.

    Less than an hour from Tokyo, fantastic seaside town Kamakura »s known for its surfing scene, but also offers an attractive selection of relaxed cafes and restaurants.

    Sri Lanka's Hill Country

    Sri Lanka may be “so hot right now”, but Lonely Planet recommends a different experience.

    Try getting ahead of (and away from) the pack by taking a scenic train to Sri Lanka's Hill Country for a wonderfully temperate escape from the nation's humid coasts.

    This island owns a mountainous interior that is every bit as scenic as the coast, blessed by pleasantly cool temperatures that rarely above 21℃.

    Raja Ampat, Indonesia

    “Raja” means “king” and this grand title is apparent. Packed with white-sand beaches, lush jungle and unusual mushroom-shaped small islands. Raja Ampat is a biological hotspot.

    Home to some of the richest, most diverse coral reefs on the planet—over 200 diving spots are still in a state of nature—and this, paired with a growing ecotourism (生态旅游) offering, means Raja Ampat will no doubt remain king of the islands.

    Cooking programs and classes for children seem to positively influence children's food preferences and behaviors, according to a recent review. And, although the review didn't look at long-term effects of such programs, the findings suggest that such programs might help children develop long-lasting healthy habits.

    This research comes at a time when childhood obesity(肥胖) rates have been rising rapidly. More than one-third of adolescents in the United States were obese in 2012, according to the U. S.Centers for Disease Control and Prevention (CDC). This trend has been caused, at least in part, by a significant decrease in the amount of meals that people consume at home since the 1980s, according to background information in the study.

    Cooking education programs, such as Food Explorers, teach children about new healthy foods and how to prepare them. They also stress the importance of eating five fruits and vegetables every day. A volunteer parent explains a new food to the group, and the kids make something based on the lesson, such as fruit or vegetable salad. Depending on the program, kids may be sent home with information about healthy foods to bring to their parents, the review explained.

    The study team reviewed eight other studies that tested different types of cooking education programs. Children in these classes were between 5 and 12 years old, according to the review. The goal of the study team was to learn more about developing an efficient program to encourage healthy food choices that last a lifetime. The study found that it is particularly important to expose kids to healthy foods on a number of occasions. This makes them feel comfortable with the new foods, which helps them build healthy habits.

    The study stressed the importance of getting parents involved in(参与) their children's eating habits. Parents who are unable to enroll their kids in a cooking class can achieve similar benefits by having their kids help them while they prepare meals at home. Children are more comfortable at home, which makes them more receptive to new foods because they will make the connection to a positive experience.

    Fern loved Wilbur more than anything. She loved to stroke him, to feed him, to put him to bed. Every morning, as soon as she got up, she warmed his milk, tied his bib on, and held the bottle for him.  Every afternoon, when the school bus stopped in front of her house, she jumped out and ran to the kitchen to fix another bottle for him. She fed him again at suppertime, and again just before going to bed.  Mrs. Arable gave him a feeding around noontime each day, when Fern was away in school. Wilbur loved his milk, and he was never happier than when Fern was warming up a bottle for him. He would stand and gaze up at her with adoring eyes.

    For the first few days of his life, Wilbur was allowed to live in a box near the stove in the kitchen. Then, when Mrs. Arable complained, he was moved to a bigger box in the woodshed. At two weeks of age, he was moved outdoors. It was apple-blossom time, and the days were getting warmer. Mr.  Arable fixed a small yard specially for Wilbur under an apple tree, and gave him a large wooden box full of straw, with a doorway cut in it so he could walk in and out as he pleased.

    "Won't he be cold at night?" asked Fern.

    "No," said her father.  "You watch and see what he does."

    Carrying a bottle of milk, Fern sat down under the apple tree inside the yard. Wilbur ran to her and she held the bottle for him while he sucked. When he had finished the last drop, he grunted and walked sleepily into the box. Fern peered through the door. Wilbur was poking the straw with his snout. In a short time he had dug a tunnel in the straw. He crawled into the tunnel and disappeared from sight, completely covered with straw.

    Fern was enchanted. It relieved her mind to know that her baby would sleep covered up, and would stay warm.