3 .

5 . 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.

6 . A few weeks ago, I sat with a California farmer named Dave Ribeiro. I asked him what he wished more people knew about farmers. He smiled and said, “That we walk among you. We look like you and talk like you. We have advanced degrees and hobbies, just like you.”

Take Dave: He’s a young man with a music degree. And if you walked past him on the street, you’d never think, “There goes a farmer.”

Is someone like Dave who you picture when you think of a farmer? Probably not. I think that most people would picture a man in his overalls. I can tell you, that does not represent Dave or any of the many other farmers I have gotten to know.

Not only do we have to throw out our stereotypes of farmers, but farming as a whole doesn’t look much like it used to either. We recently sent a team out to see what modern farming looks like, and they found farmers to be completely different from our usual ideas about them and also came across them in some unexpected places.

In a parking lot in a neighborhood of Brooklyn, they met a new crop of young farmers who are trying to bring fresh greens closer to eaters in the city by growing them in high-tech indoor vertical farms. In a Florida field under the flight path of an airport, they discovered farmers with university degrees growing algae (藻类) that might someday fuel our cars. And in a modern farm in California, they observed how farmers are using technology to take the best possible care of their animals.

These farmers all spend their days in very different ways — none of them looks like the stereotypical farmer we have in our mind — but they’re all working on new ways to feed our planet. Not only do we need to change our idea of what farming looks like, but we also need to change our view of where solutions can come from. Feeding all of us is going to take all of us working together.

7 . Many people like traveling. Travel in Canada has become exciting as a number of lakes make it attractive. In fact, Canada has more lakes than any other country which contains fresh water. In addition to lakes, Canada has a number of beaches as it has a long coastline on its north, east, and west. Travelers from around the world come in large numbers to enjoy the sunbath on various beaches.

Niagara Falls lies on the border between Canada and the US. It is now popular for its beauty and is a valuable source of hydroelectric power. Niagara Falls is most attractive during the summer season when the weather condition is charming and attractive. At the Canadian side, floodlights illuminate both sides of the falls for several hours after dark and the whole scene becomes magnificent.

When traveling in Canada, travelers can enjoy doing the shopping in Toronto which is considered a leading city. It symbolizes the spirit of independence. Migrants from Europe, Latin America and Asia inhabit the place and make it a plural society. Ottawa, on the other hand, is the capital of Canada and center of political activities.

Vancouver is an enlightening city in Canada which was named after British Captain George Vancouver, who explored the area in the 1790s. The city is a leading industrial place in Canada. Another tourist attraction in Canada is the capital city of British Columbia, Victoria. The city is located on the southern tip of Vancouver Island.

Travel in Canada is being made easy because of a higher standard of transportation facilities. Besides, very few people know that Canada is a country with high wages per hour. In addition to a popular tourist destination, Canada is an economic powerhouse of North America, particularly in agricultural products. The Canadian dairy industry exports milk products around the world.

8 . Three months after Hurricane Katrina in 2005, Rebecca Sell, then 24, a photojournalist for Fredericksburg photographed a New Orleans couple worriedly examining water-spotted photo albums. As she took the photo, something within her clicked. “I told them I could take the ruined pictures, copy them and give them digitally restored photos,” she recalls. Although a bit sceptical, the couple agreed. Rebecca took their photos home, restored them and took them to the couple at their temporary home. “It felt so good to be able to do that for them,” says Rebecca.

When her editor, Dave Ellis, saw the photo of the couple, he suggested they go back and restore damaged photos for even more people. So in January 2006, with paid time off from the newspaper, the two set up a shop in Pass Christian. After posting a notice in the community newsletter, Rebecca and Dave received 500 photos in four days. For each, the pair took a new digital picture, then used high-tech software to erase water spots and restore colors. It just so happened that a popular website linked to Dave’s blog about the experience, and soon Operation Photo Rescue, as it came to be known, had emails from hundreds of volunteers, including photographers and restoration experts, eager to help.

Though the digital restoration is a painstaking process, mending irreplaceable family pictures means the world to victims like Emily Lancaster, 71, who took out piles of ruined photo albums after Katrina, never thinking the mess could be saved. But she just couldn’t bear to part with a few treasured pictures, including a portrait of her father, who had passed away, and a photo of her husband as a boy. Then she heard about Operation Photo Rescue. “I didn’t have a whole lot of hope they could fix them, but they did,” Emily says. “Almost every day I think about all the pictures I’ve lost. I’m so happy to have these two.”

In the five years since Katrina, Operation Photo Rescue has collected thousands of pictures ruined by floods, hurricanes and tornadoes. Volunteers make “copy runs” to disaster areas across the country to gather damaged photos from survivors; operating costs are covered by donations. “It’s great to be able to give people some of their history back,” says Rebecca. “One person told me that thanks to us, her grandmother got to see her photos again before she passed away. Moments like that remind me why I do this.”

9 . By now, we are all aware that social media has had a tremendous influence on our culture, in business, on the world-at-large. Social media websites revolutionized the way people communicate and socialize on the Web. However, aside from seeing your friend’s new baby on Facebook, or reading about Justin Bieber’s latest conflict with the law on Twitter, what are some of the real influences?

Social networks offer the opportunity for people to re-connect with their old friends and acquaintances, make new friends, share ideas and pictures, and many other activities. Users can keep pace with the latest global and local developments, and participate in campaigns and activities of their choices. Professionals use social media sites like LinkedIn to enhance their career and business development. Students can work together with their peers to improve their academic and communication skills.

Unfortunately, there are a few downsides too to social networking. If you are not careful, immoral people can target you for cyber bullying and disturbance on social sites. School children, young girls, and women can fall victim to online attacks which can create tension and suffering. If you are a victim of cyber bullying, do not take it lying down, but try to take appropriate legal action against the attacker.

Many companies have blocked social networks as addicted employees can distract themselves on such sites, instead of focusing on work. In fact, studies show that British companies have lost billions of dollars per year in productivity because of social media addiction among employees.

Also, what you carelessly post on the Internet can come back to trouble you. Revealing (泄露) personal information on social sites can make users vulnerable (易受伤害的) to crimes like identity theft, stalking, etc. Many companies perform a background check on the Internet before hiring an employee. If a potential employee has posted something embarrassing on social media, it can greatly affect their chances of getting the job. The same holds true for our relationships too, as our loved ones and friends may get to know if we post something undesirable on social networks.

Social media has its advantages and drawbacks as each coin has two sides. It is up to each user to use social sites wisely to enhance their professional and social life, and exercise caution to ensure they do not fall victim to online dangers.

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10 . Painting

The art of creating pictures using colors, shapes and lines is called painting. Museums and galleries show the paintings of professional artists. But painting is also a popular form of entertainment and creative expression.

    1     Experienced painters usually use a brush to apply oil paints to a canvas cloth surface. Young painters usually use watercolors on pieces of paper. Very young children may use finger-paints to create paintings.

Painters can use their art to express devotion to a religion, to tell a story, to express feelings and ideas, or simply to present a pleasing picture. Religious paintings often show a god or a scene from a sacred text. Other common subjects have been famous legends and events in history, as well as scenes from daily life. Artists also paint portraits (肖像), or pictures of people.     2     All of these types of paintings show the human figure in some way.

Some kinds of paintings do not focus on people. In landscape (风景) paintings, the focus is on scenes from nature. Artists also paint still objects such as fruit and vegetables.     3     Some artists communicate their ideas through pictures that do not represent any objects.

    4     Paintings dating back 15,000 years have been found on the walls of caves in France and Spain.

    5     Samples of painted pottery (陶器) from at least 5,000 years ago have been found in China and Iran. The ancient Egyptians decorated their temples with beautiful paintings. People in ancient Greece painted on decorative objects such as vases in addition to the walls of temples.