When you're lying on the white sands of the Mexican Riviera, the stresses of the world seem a million miles away. Hey, stop! This is no vacation-you have to finish something!

    Here lies the problem for the travel writer and critic Edie Jarolim "I always loved traveling and always liked to eat, but it never occurred to me that I could make money doing both of those things," Jarolim said. Now you can read her travel advice everywhere—in Arts and Antiques, in Brides, or in one of her there books, The Complete Idiot's Travel Guide to Mexican Beach Resorts.

    Her job in travel writing began some eight years ago. After getting a PhD in English in Canada, she took a Test.

    Frommer's travel guides, passed it, and got the job. After working at Frommer's, Jarolim worked for a while at Rough Guides in London, then Fodor's, where she fell so in love with a description of the Southwest of the U.S. that she moved there.

    Now as a travel writer, she spends one-third of her year on the road. The rest of the time is spent completing her tasks and writing reviews of restaurants at home in Tucson, Arizona.

    As adventurous as the job sounds, the hard part is fact-checking all the information. Sure, it's great to write about a tourist attraction, but you'd better get the local museum hours correct or you could really ruin someone's vacation.

    The meaning of silence varies among cultural groups. Silences may be thoughtful, or they may be empty when a person has nothing to say. A silence in a conversation may also show stubbornness, uneasiness, or worry. Silence may be viewed by some cultural groups as extremely uncomfortable; therefore attempts may be made to fill every gap (间隙) with conversation. Persons in other cultural groups value silence and view it as necessary for understanding a person's needs.

    Many Native Americans value silence and feel it is a basic part of communicating among people, just as some traditional Chinese and Thai persons do. Therefore, when a person from one of these cultures is speaking and suddenly stops, what maybe implied (暗示) is that the person wants the listener to consider what has been said before continuing. In these cultures, silence is a call for reflection.

    Other cultures may use silence in other ways, particularly when dealing with conflicts among people or in relationships of people with different amounts of power. For example, Russian, French, and Spanish persons may use silence to show agreement between parties about the topic under discussion. However, Mexicans may use silence when instructions are given by a person in authority rather than be rude to that person by arguing with him or her. In still another use, persons in Asian cultures may view silence as a sign of respect, particularly to an elder or a person in authority.

    Nurses and other care-givers need to be aware of the possible meanings of silence when they come across the personal anxiety their patients may be experiencing. Nurses should recognize their own personal and cultural construction of silence so that a patient's silence is not interrupted too early or allowed to go on unnecessarily. A nurse who understands the healing (治愈) value of silence can use this understanding to assist in the care of patients from their own and from other cultures.

    Since English biologist Charles Darwin published On the Origin of Species in 1859, scientists have vastly improved their knowledge of natural history. However, a lot of information is still of the speculation, and scientists can still only make educated guesses at certain things.

    One subject that they guess about is why some 400 million years ago, animals in the sea developed limbs (肢) that allowed them to move onto and live on land.

    Recently, an idea that occurred to the US paleontologist (古生物学家) Alfred Romer a century ago became a hot topic once again.

    Homer thought that tidal (潮汐的) pools might have led to fish gaining limbs. Sea animals would have been forced into these pools by strong tides. Then, they would have been made either to adapt to their new environment close to land or die. The fittest among them grew to accomplish the transition (过渡) from sea to land.

    Romer called these earliest four-footed animals “tetrapods”. Science has always thought that this was a credible theory, but only recently has there been strong enough evidence to support it.

    Hannah Byrne is an oceanographer (海洋学家) at Uppsala University in Sweden. She announced at the 2018 Ocean Sciences Meeting in Oregon, US, that by using computer software, her team had managed to link Homer's theory to places where fossil deposits (沉积物) of the earliest tetrapods were found.

    According to the magazine Science, in 2014, Steven Balbus, a scientist at the University of Oxford in the UK, calculated that 400 million years ago, when the move from land to sea was achieved, tides were stronger than they are today. This is because the planet was 10 percent closer to the moon than it is now.

    The creatures stranded in the pools would have been under the pressure of “survival of the fittest”, explained Mattias Green, an ocean scientist at the UK's University of Bangor. As he told Science, “After a few days in these pools, you become food or you run out of food... the fish that had large limbs had an advantage because they could flip (翻转) themselves back in the water.”

    As is often the case, however, there are others who find the theory less convincing. Cambridge University's paleontologist Jennifer Clark, speaking to Nature magazine, seemed unconvinced. “It's only one of many ideas for the origin of land-based tetrapods, any or all of which may have been a part of the answer,” she said.

The World's Unusual Libraries

    Log Libraries

    Alex Johnson writes in his new book—Improbable Libraries,“ The very idea of a library is developing: many of these libraries operate on principles that differ mainly from the traditional libraries. Some, for example, have no membership or identification requirements, and some do not even request that the books be returned.” The oversized bird box in a park in Lowa is part of the Little Free Library Movement, which was established in Wisconsin in 2009.

Phone Booths

    This design from the firm, Stereotank, offers browsing shelter for passers-by. In the UK, a phone company's programme, allowing communities to take over their phone booth for £ 1— means that many have been changed into tiny local libraries. Meanwhile, a solar light has been set in a phone booth so that late night visitors can still read.

    Branches of Knowledge

    Didier Muller's libraries operate as hanging libraries: visitors can look through pages, taking any book they choose and exchanging it with their own. The equipment of hanging wooden houses is one of several art projects serving as a booklover's place.

    Soundproofed Pods

    Around the world, architects are designing buildings that bend bricks-and-mortar libraries into new forms. The Seikei University Library in Japan—the vision of Pritzker Prize winner Shigeru Ban—contains space-age soundproofed (隔音的) pods to encourage discussions between students.

    The World Happiness Report, a United Nations agency report, measures (估量) how happy people are, and why. Norway is the happiest place on earth—beating neighbour Denmark from the number one position.

    Denmark, Iceland, Switzerland and Finland are among the top five, while the Central African Republic came last. Western Europe and North America took up most of the places at the top of table, with the US and UK at 14th and 19th respectively.

    The World Happiness Report mainly depends on asking a simple question of more than 1,000 people every year in more than 150 countries. “Imagine a ladder, with steps numbered from 0 at the bottom to 10 at the top,” the question asks. “The top of the ladder is the best possible life for you and the bottom of the ladder is the worst possible life for you. On which step of the ladder would you say you personally feel you stand at this time?”

    The average (平均的) result is the country's score—from Norway's 7.54 to the central African Republic's 2.69. But the report also tries to explain why one country is happier than another. It looks at reasons including economic strength, social support, freedom of choice, and generosity.

    This year's report also has a text titled “restoring (恢复) American happiness”, which examines why happiness levels in the United States are falling, despite continually-increasing economic improvement. “The United States can and should raise happiness by solving American's social problems—rising inequality and distrust—rather than focusing mainly on economic growth,” the authors said.

    Jeffrey Sachs, the director of the Sustainable Development Solutions Network, which published the report, said President Donald Trump's policies were likely to make things worse.

    Teen Tour Camps at SummerCamps.com

    Rock-N-Water Christian Camps

    Lotus, California, United States      Duration: 4 weeks

    Founded in 1989, Rock-N-Water is a group of highly trained Christians who want to impact young people with the joy of God's Living Word. We focus our program on biblical principles, and we use the help of nature, friendship, and challenge to develop character and have ridiculous amounts of fun.

    Odyssey Expeditions: Caribbean

    Road Town, Tortola        Duration: 3 weeks

    Odyssey Expeditions offers tropical sailing and scuba diving adventures for teenagers, with marine biology, water sports, and scuba certifications at exciting Caribbean locations. Established in 1995, Odyssey is the best opportunity to safely explore the Caribbean aboard a beautiful sailing catamaran. No experience necessary. Reserve your spot before availability. Small groups of 9-12 allow you to have the most fun!

    The G2 Academy Golf Camp

    Bluffton, South Carolina       Duration: variable

    The summer program at G2 is designed specifically for girls empowering them for their future success. Students can join weekly sessions or stay the entire summer! While participating in the G2 Academy Summer Program, students receive G2 Proprietary Training in golf, mental toughness, physical fitness, nutrition, and empowerment.

    Berklee's Aspire: Music Performance Intensive

    Boston, Massachusetts, United States         Duration: 5 weeks

    Berklee's Aspire will give you a taste of Berklee, the preeminent institute of contemporary music and the performing arts. Whether you are in middle school, high school, or beyond, there is a Berklee summer program in music, theater, and/or dance for you. You'll enjoy access to Berklee's state-of-the-art facilities as you learn from faculty who are the very best at what they do, joined by students from all over the world.