The sound of a mosquito can mean trouble in many parts of the world. The bite of the mosquito can be deadly. The insects carry serious diseases like malaria (疟疾). It is estimated that almost 630,000 people died from malaria and malaria­related causes in 2012, and most of these cases were in African countries.

    In the United States, a group of California scientists are working to develop a more effective and less costly substance (物质) to protect people from mosquitoes. The researchers are investigating the sense of smell in mosquitoes. They found the insects use the same receptor for identifying carbon dioxide in human breath as they do for the smell of our skin. Anandasankar Ray, who is leading the investigation, says scientists tested more than a million chemical compounds (化合物) until they found a substance called Ethyl Pyruvate. He says Ethyl Pyruvate makes the mosquitoes' receptors inactive. “When we apply Ethyl Pyruvate to a human arm and offer it to hungry mosquitoes in a cage, very few of the mosquitoes are attracted to the human arm because only a few of them are able to smell it out,” said Ray.

    Genevieve Tauxe, a member of the research team, says it was not easy to find the neurons (神经元) of noble cells that recognize both the smell of human breath and skin. “With the device used to examine the mosquito, we are able to insert a very small electrode (电极) into the part of the mosquito's nose, where its smelling neurons are and where the smell is happening,” said Tauxe.

    Anandasankar Ray says a product based on Ethyl Pyruvate may cost less to produce than DEFT, the most effective chemical treatment now in use. He says DEFT is too costly for most people who live in areas affected by malaria.

    “Perhaps by finding smells that can attack other target receptors, we will be able to improve upon DEFT and finally have the next generation of insect behaviour control products,” said Ray.

    Anxiety has now surpassed depression as the most common mental health disease among college students, though depression, too, is on the rise. More than half of students visiting campus clinics cite anxiety as a health concern, according to a recent study of more than 100,000 students nationwide by the Center for Collegiate Mental Health at Penn State. Nearly one in six college students has been diagnosed with or treated for anxiety within the last 12 months, according to the annual national survey by the American College Health Association.

    The causes range widely, experts say, from mounting academic pressure at earlier ages to overprotective parents to engagement with social media. Anxiety has always played a role in the development of a student's life, but now more students experience anxiety so acute that they are seeking professional help. Like many college clinics, the Center for Counseling and Psychological Services at the University of Central Florida (UCF)— one of the country's largest and fastest-growing universities, has seen sharp increases in the number of clients: 15.2 percent over last year alone.

    Anxiety has become characteristic of the current generation of college students, said Dan Jones, the director of Counseling and Psychological Services at Appalachian State University in Boone, N. C. Because of increasingly pressures during high school, he and other experts say, students arrive at college preloaded with stress. Accustomed to extreme parental oversight, many seem unable to govern themselves. And with parents so accessible, students have had less incentive to develop life skills. “They can't tolerate discomfort or having to struggle,” Dr Jones said.

    More often, anxiety is mild and temporary, the indication of a student under the control of a normal developmental issue-learning time management, for example, or how to handle rejection from a sorority. Mild anxiety is often treatable with early, modest interventions. But to care for rising numbers of severely troubled students, many counseling centers have moved to triage protocols (分诊措施). That means that students with less urgent needs may wait several weeks for first appointments.

    Like many college counseling centers, UCF has designed a variety of daily workshops and therapy groups that implicitly and explicitly address anxiety, depression and their triggers. Next fall the center will test a new app for treating anxiety with a seven-module cognitive behavioral program, accessible through a student's phone and augmented with brief videoconferences with a therapist. It also offers semester-long, 90-minute weekly therapy groups, such as “Keeping Calm and in Control”, “Mindfulness for Depression” and “Building Social Confidence” -for students struggling with social anxiety.

    Off the coast of Hong Kong, there are numerous beautiful places that have long stay hidden, just waiting to be discovered by travelers. We've done the hunting for you.

Tap Mun

    Located north of the Sai Kung island, Tap Mun is home to a remote fishing, community with a population of less than a hundred. Tap Mun is also widely known as Grass Island, and it's easy to see why — this 1.7sq km island is an expense of grassy hill populated by wandering cows, a perfect scene to set a milk advertisement.

    Tap Mun is highly sought after as a spot for both camping and kite-flying, while also boasting several rocky beaches. For a relaxing afternoon, take a walk along the 2km footpath and slowly take in the panoramic(全景的) 360-degree view while enjoying the cool breeze.

Tung Ping Chau

    For a rugged(崎岖的) island getaway, set off for a trip to Tung Ping Chau — an offshore island sitting in splendid isolation in Mirs Bay on the northeastern side of Hong Kong. As a part of the Hong Kong Geopark, Tung Ping Chau is among the eight sites specially chosen for conservation in light of its special geological significance. Its rich marine life also led to its designation(指定) as one of Hong Kong's four marine parks.

Po Toi

    Located just three kilometers away from Hong Kong Island's southeastern tip, Po Toi is a quiet place that will make you feel completely isolated from modern life. While just a stone's throw away from the busy life of Hong Kong, Po Toi seems to be miles away from the busy city life.

    Take a leisurely stroll (闲逛) along the main path on the island, as you approach a lighthouse located on the sides of the cliff. Along the way, do not miss the dramatic and unusual rock formations as you are amazed by the glory of the famous Turtle Climbing up the Mountain, Monk Rock, and Palm Cliff.

    Want to see 16 sunrises in one day? Float in zero gravity? Be one of the few to have gazed upon our home planet from space? In just four years' time, and for an astronomical $9.5 million dollars, it's claimed you can.

    What's being billed as the world's first luxury space hotel, Aurora Station, was announced Thursday at the Space 2.0 Summit in San Jose, California. Developed by US-based space technology start-up Orion Span, the fully modular space station will host six people at a time, including two crew members, for 12-day trips of space travel. It plans to welcome its first guests in 2022.

    “Our goal is to make space accessible to all,” Frank Bunger, CEO and founder of Orion Span, said in a statement. “Upon launch, Aurora Station goes into service immediately, bringing travelers into space quickly and at a lower price point than ever seen before.” While a $10 million trip is outside the budget of most people's two-week vacations, Orion Span claims to offer a real astronaut experience.

    During their 12-day adventure, the super-rich travelers will fly at a height of 200 miles above the Earth's surface in Low Earth Orbit, or LEP, where they will see incredible views of the blue planet. The hotel will orbit Earth every 90 minutes, which means guests will see around 16 sunrises and sunsets every 24 hours.

    Activities on board include taking part in research experiments such as growing food while in orbit--which guests can take home for a super-smug souvenir—and soaring over their hometown. Guests can have live video chats with their less-fortunate loved ones back home via high-speed wireless Internet access and, upon return to Earth, will be greeted with a specially arranged hero's welcome. While enjoying the thrills of zero gravity, the travelers will be able to float freely through the hotel, taking in views of the northern and southern Aurora from the station's windows.

    DepositsHYPERLINK “https://www.orionspan.com/aurora-station-reservations”（订金）are already being a HYPERLINK“http://www.orisonspan.com/aurora-station-reservations”cHYPERLINK“http://www.orionspan.com/aurora-station-reservations” cepted for future stays on the space hotel. The $80,000 is fully returnable, should applicants find themselves unable to rise to the full $9.5 million. Travelers will complete a three-month Orion Span Astronaut Certification (OSAC) program before takeoff. Orion Span has a team of space industry veterans who together have more than 140 years of human space experience.

    Children who spend more time reading with their parents have a greater chance of becoming better readers than those who don't. With the help from their parents, children can learn techniques to improve their reading skills.

    "A lot of parents think after their child learns to read, they should stop reading to them," Donna George said. "They are sadly mistaken."

    George offers her services to parents at the Title I Learning Centers. She said reading aloud to children may be the most valuable thing parents can do. "It is better for children to hear things at a higher level than where they are," George said. "Parents are their child's first teacher." Parents help their children build listening, phonics, comprehension and vocabulary skills when they read aloud to them.

    Before parents can identify reading problems, they should escape the enemy —television and limit the time their children spend watching television. George suggested not allowing kids to have a TV in their bedrooms, setting a schedule of when kids can watch or keeping a list of how many programs children watch. Louise Joines said while her 14-year-old daughter and 10-year-old son enjoy reading, the television sometimes becomes a distraction. So she tries to build the situation by suggesting books the entire family will enjoy reading together, like the Harry Potter series.

    Parents who do not read themselves should not count on their children being interested in it. If parents would read to their children at least 15 minutes every day, children would not have so many problems in school. It is the parents' job to help build that desire in their children, and of course to know what kind of books to read is also important.

    A good modern newspaper is an extraordinary piece of reading. It is remarkable first for what it contains: the range of news from local crime to international politics, from sports to business to fashion to science, and the range of comment and special features as well, from editorial page to feature articles and interviews to criticism of books, art, theatre, and music.

    A newspaper is even more remarkable for the way one reads it: never completely, never straight through, but always by jumping from here to there, in and out, glancing at one piece, reading another article all the way through, reading just a few paragraphs of the next. A good modern newspaper offers a variety to attract many different readers, but far more than any one reader is interested in. What brings this variety together in one place is its topicality(时事性), its immediate relation to what is happening in your world and your locality now. But immediacy and the speed of production that goes with it mean also that much of what appears in a newspaper has no more than transient value.

    For all these reasons, no two people really read the same paper: what each person does is to put together, out of the pages of that day's paper, his own selection and sequence, his own newspaper. For all these reasons, reading newspapers efficiently, which means getting what you want from them without missing things you need but without wasting time, demands skill and self-awareness as you modify and apply the techniques of reading.