2 . Is It Worth Buying Organic Food?

Organic food, grown without artificial chemicals, is increasingly popular nowadays. Consumers have been willing to pay up to twice as much for goods with organic labels (标签). However, if you think paying a little more for organic food gets you a more nutritious (有营养的) and safer product, you might want to save your money. A study led by researchers at Stanford University says that organic products aren’t necessarily more nutritious, and they’re no less likely to suffer from disease-causing bacteria, either.

The latest results, published in the Annuals of Internal Medicine, suggest that buyers may be wasting their money. “We did not find strong evidence that organic food is more nutritious or healthier,” says Dr. Crystal Smith-Spangler from Stanford. “So consumers shouldn’t assume that one type of food has a lower risk or is safer.”

For their new study, Smith-Spangler and her colleagues conducted a review of two categories of research, including 17 studies that compared health outcomes between consumers of organic against traditional food products, and 223 studies that analyzed the nutritional content of the foods, including key vitamins, minerals and fats.

While the researchers found little difference in nutritional content, they did find that organic fruit and vegetables were 20% less likely to have chemicals remaining on the surfaces. Neither organic nor traditional foods showed levels of chemicals high enough to go beyond food safety standards. And both organic and traditional meats, such as chicken and pork, were equally likely to be harmed by bacteria at very low rates. The researchers did find that organic milk and chicken contained higher levels of omega-3 fatty acids, a healthy fat also found in fish that can reduce the risk of heart disease. However, these nutritional differences were too small, and the researchers were unwilling to make much of them until further studies confirm the trends.

Organic food is produced with fewer chemicals and more natural-growing practices, but that doesn’t always translate into a more nutritious or healthier product. The U.S. Department of Agriculture (USDA) states that “Whether you buy organic or not, finding the freshest foods available may have the biggest effect on taste.” Fresh food is at least as good as anything marketed as organic.

3 . In 1990, Hal Donaldson was 23 years old, fresh out of college and found himself in Calcutta, India, where he was asked to interview Mother Teresa.

Donaldson says about the great woman famed for feeding the hungry, “She wasn’t wearing shoes and her ankles were swollen. She sat down with me and was very polite.” After the interview, Mother Teresa asked him, “What are you doing to help the poor?” Donaldson admitted that he was young and wasn’t focused on helping others. With a smile on her face, Mother Teresa said, “Everyone can do something.”

Those words deeply struck Donaldson and forced him to face hard truths about himself.

Hal Donaldson grew up in the San Francisco Bay area. When he was 12 years old, his parents were hit by a drunk driver; his father died, and his mother was seriously injured. To make ends meet, they went on welfare. Donaldson says, “I had holes in my shoes and clothes. When you’re teased at school for that, you just want to escape.”

He managed to do just that. Donaldson got into college and turned his focus to making money for himself. He says, “I was just trying to find my way out of insignificance.” However, it’s easy to overlook others along the way. I was the guy that would see a homeless person and cross the street, so I didn’t have to confront (面对) him. My focus was on climbing to the top instead of helping those trying to climb with me.

Donaldson returned home from India with a different thought. He traveled to eight cities in America and stayed on the streets and listened to stories of the homeless. “My heart broke,” he says. “I knew I could no longer just live for myself.”

Inspired by Mother Teresa’s words and the stories he’d heard across America, Donaldson loaded a pick up truck with $300 worth of groceries and handed them out to anyone who needed help. In 1994, Donaldson created the nonprofit organization, Convoy for Hope, which works with communities across America and around the world. Their work focuses on feeding children, women’s empowerment, helping farmers and disaster services.

4 . A famous magazine, Amusement Today, does a survey among park lovers every year both in the US and overseas, based on which, “Top 5 List of the Best Amusement Parks in the World” has come out as follows:

Disneyland, California

Disneyland is a theme park in Anaheim, California, the US. More than 515 million guests have traveled to this American landmark from around the world since the park first opened to guests on July 17, 1955. The park consists of many world-famous sections, such as Main Street, Adventure land, New Orleans Square, and so on.

Magic Kingdom, Disney World, Florida

Magic Kingdom is a theme park within the Walt Disney World Resort in Lake Buena Vista, Florida, near Orlando opened on October 1, 1971. It is the most famous theme park in Florida. The park’s design and attractions don’t make much difference from Disneyland Park in Anaheim.

EPCOT, Disney World, Florida

EPCOT is the second theme park built at the Walt Disney World Resort near Orlando, Florida. The park opened on October 1, 1982, and was named EPCOT Center from 1982 to 1993. It was the largest Disney theme park in the world until 1998, when Disney’s Animal Kingdom opened.

Disney­MGM Studios, Florida

MGM’s streets are the home for some great movie­themed attractions with a history of less than 30 years. With the addition of the Twilight Zone Tower of Terror and the Rock and Roller Coaster, the park is now home to Disney World’s most thrilling rides.

Universal Studios, Florida

Go behind the scenes, beyond the screen and jump right into the action of your favorite movies at Universal Studios, the number one movie and TV theme park in the world.

5 . Art and science may seem like opposite things. One means the creative flow of ideas, and the other means cold, hard data-some people believe. In fact, the two have much in common. Now, a study finds art can help students remember better what they have learned in the science class.

Mariale Hardiman, an education specialist at Johns Hopkins University, noticed that students who used art in the classroom listened more carefully. They might ask more questions. They might volunteer more ideas. What’s more, students seemed to remember more of what they had been taught when their science lessons had involved(涉及) art. To prove that, Hardiman teamed up with some researchers and six local schools.

In the experiment, the researchers worked with teachers in 16 fifth-grade classrooms. They provided traditional science lessons and art-focused ones. In a traditional science class, for example, students might read aloud from a book. In the art-focused one, they might sing the information instead.

The team randomly assigned(随机分配) each of the 350 students to either a traditional science classroom or an art-focused one. Students then learned science using that way for the whole unit-about three weeks. When they changed to a new topic, they also changed to the other type of class. This way, each student had both an art-focused class and a traditional one. Every unit was taught in both ways, to different groups of students. This enabled the researchers to see how students did in both types of classes.

The team found that students who started off in a traditional class performed better after they moved into an art-focused class. But those who started off in an art-focused class did well even when they went back to a traditional science class. These students appeared to use some of the art techniques(技巧) after going back to a traditional class. Classroom teachers reported that many students continued to sing the songs that they learned after finishing the unit. “The more we hear something, the more we retain it,” Hardiman says. “It suggests that the arts may help students apply creative ways of learning on their own.”

6 . UNESCO World Heritage Sites were created to celebrate and safeguard the most unique places around the world. Below are my 4 favorite UNESCO World Heritage Sites.

Cinque Terre, Italy

With cars banned here, you’ll really get to feel the unique history and character of the Cinque Terre’s five centuries-old coastal villages. The breathtaking views of harbors far below the wild coastline along with the rich colors will definitely make it a memorable holiday.

Angkor Wat, Cambodia

Angkor Wat is the world’s largest religious (宗教的) monument and it contains impressive remains from the Khmer Empire (9th to 15th century). The site has dozens of iconic temples like Ta Prohm (a magnificent temple ruin hidden in the jungle). Hosting more than two million visitors annually, this artistic masterpiece is a must-see site.

Petra, Jordan

Petra’s rock-cut architecture has contributed to its nickname, the Rose City, based on the color of the stone it was carved from. The delicate constructions of temples and tombs along with the remains of churches and temples are only a couple of reasons why this world-famous site is a must-visit destination.

Yellowstone National Park, USA

Yellowstone’s vast wilderness includes mountain ranges, lakes and waterfalls. One of the main reasons for tourists to visit Yellowstone is to observe the amazing wildlife like grizzly bear, bison, bighorn sheep wander the plains and valleys.

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7 . Endangered polar bears are breeding (繁殖) with grizzly bears (灰熊), creating “pizzly” bears, which is being driven by climate change, scientists say.

As the world warms and Arctic sea ice thins, starving polar bears are being forced ever further south, where they meet grizzlies, whose ranges are expanding northwards. And with that growing contact between the two come increasing hybrids (杂交种).

With characteristics that could give the hybrids an advantage in warming northern habitats, some scientists guess that they could be here to stay. “Usually, hybrids aren’t better suited to their environments than their parents, but these hybrids are able to search for a broader range of food sources,” Larisa DeSantis, an associate professor of biological sciences at Vanderbilt University, told Live Science.

The rise of “pizzly” bears appears with polar bears’ decline: their numbers are estimated to decrease by more than 30% in the next 30 years. This sudden fall is linked partly to “pizzly” bears taking up polar bears’ ranges, where they outcompete them, but also to polar bears’ highly specialized diets.

“Polar bears mainly consumed soft foods even during the Medieval Warm Period, a previous period of rapid warming,” DeSantis said, referring to fat meals such as seals. “Although all of these starving polar bears are trying to find alternative food sources, like seabird eggs, it could be a tipping point for their survival.” Actually, the calories they gain from these sources do not balance out those they burn from searching for them. This could result in a habitat ready for the hybrids to move in and take over, leading to a loss in biodiversity if polar bears are replaced.

“We’re having massive impacts with climate change on species,” DeSantis said. “The polar bear is telling us how bad things are. In some sense, “pizzly” bears could be a sad but necessary compromise given current warming trends.”

9 . China is one of the world’s ancient civilizations and has the earliest outstanding bronze casting technology. Here we’ve created a list of 4 museums where you can gain an in-depth understanding of Chinese bronze.

Sanxingdui Museum

Address: Sanxingdui Ruin Site, 133 Xian Road, Guanghan, Deyang, Sichuan province

Hours: Comprehensive Gallery (the first exhibition hall): 8:30-18:00; Bronze Gallery (the second exhibition hall): 8:30-18:30. Last tickets sold at 17:00. Closed on the morning of Chinese New Year’s Eve

Ticket booking: 0838-5651526

General admission: Gallery ticket 80 yuan

Note: Children shorter than 1.2m (including 1.2m) can visit the gallery free of charge. The ticket must be used on the day it is sold and authorizes one visit to each gallery.

National Museum of China

Address: East side of Tian’anmen Square, Dongcheng district, Beijing

Hours: 8:30-17:00 (no entry after 16:30)

General admission: Free (passport required for entry), Closed Mondays (except for national holidays)

E-mail: webmaster@chnmuseum.cn

Shanghai Museum

Address: 201 Renmin Avenue, Huangpu district, Shanghai

Hours: 9:00-17:00 (no entry after 16:00), Closed Mondays (except for national holidays)

E-mail: webmaster@shanghai-museum.org

General admission: free (a max of 8, 000 admitted daily)

Hunan Museum

Address: 50 Dongfeng Road, Changsha, Hunan province

Hours:   9:00-17:00 (no entry after 16:00), Closed Mondays (except for national holidays) and the eve of Chinese New Year

Tel: (+86-731) 8415833, 84475933

E-mail: web@hnmuseum.com

General admission: Free (passport required for entry)

Cheering, dancing and singing, local people and tourists gathered around the fire during the Torch Festival of the Yi People in Bijie, Guizhou, on Aug 12. The festival     1     (list) as a national intangible cultural heritage(非物质文化遗产) in 2011.

There are different stories about how the festival started. But     2     (probable) it was because of the natural worship(崇拜) of fire by the Yi people. Fire was important since their ancestors could use it to bring light as well as     3     (warm) and cook food. One Yi ethnic proverb says, “Everything you eat must’see’ fire.” This is due to     4     old practice. Before bringing meat into the home from the outside, a small fire must first be lit outside and the meat should be smoked on the fire. In farming, fire was used     5     (light) piles of branches and leaves,     6     were later buried in the ground.

The Yi people used to celebrate the harvest, as a way to pray for a good harvest and drive away evil from their homes and farmland. Today it has become a     7     (society) event where people come together to light torches and join in various     8     (activity) such as building bonfires, horse racing, wrestling, bullfighting and beauty contests. The festival also provides people     9     a chance to expand their circle of friends. Through the festival, the Yi people not only share their joy and thanks for their good life,     10     get more people to understand their lifestyle and traditions.