Mosquitoes have an extraordinary ability to find humans far away and fly straight to their skin. Mosquitoes can do more than cause an itchy (发痒的）wound. Some mosquitoes spread several serious diseases, including Dengue, yellow fever and malaria.

    Over one million people worldwide die from these diseases each year. New research now shows how mosquitoes choose who to bite.

    Mosquitoes need blood to survive. They are attracted to human skin and breath. They smell the carbon dioxide gas, which all mammals breathe out. This gas is the main way for mosquitoes to know that a warm-blooded creature is nearby.

    But mosquitoes also use their eyes and sense of touch. Michael Dickinson is a professor at the California Institute of Technology. His research shows how these small insects, with even smaller brains, use three senses to find a blood meal.

    Michael Dickinson's team used plumes—a material that rises into the air of carbon dioxide gas into a wind tunnel (隧道). They then used cameras to record the mosquitoes. The insects followed the plume.

    Then, the scientists placed dark objects on the lighter colored floor and walls of the tunnel. Mr. Dickinson said, at first, the mosquitoes showed no interest in the objects at all. “What was quite surprising is that the mosquitoes fly back and forth for hours. These are hungry females and they completely ignore the objects on the floor and wall of the tunnel. But the moment they get a hit of CO₂, they change their behavior quite obviously and now would become attracted to these little visual blobs (斑点).”

    This suggested to the researchers that a mosquito's sense of smell is more important in the search for food. Once mosquitoes catch a smell of a human or animal, they also follow visual signals.

    About 70 scientists were working on a very busy project. All of them felt really desperate due to the pressure of work and the demands of their boss but everyone was loyal to him and did not think of quitting their job.

    One day, one scientist came to his boss and told him, “Sir, I've promised to take my children to the exhibition going on in our township so I want to leave at 5:30 p. m.” His boss replied, “OK. You're permitted to leave the office early today.”

    The scientist started working. He continued his work after lunch. As usual, he got involved to such an extent that he looked at his watch only when he felt he was close to completion. The time was 8:30 p. m. suddenly he remembered his promise to the children. He looked for his boss but he was not there. Having told him in the morning himself, he closed everything and left for home. Deep within himself, he was feeling guilty for having disappointed his children. He reached home. The children were not there. His wife alone was sitting in the hall and reading magazines. The situation was explosive; any talk would boomerang on him. His wife asked him, “Would you like to have coffee or shall I straight away serve dinner if you are hungry?” The man replied, “If you would like to have coffee, I too will have but what about the children?” His wife replied, “You don't know? Your boss came here at 5:15 p. m. and has taken them to the exhibition.”

    What had really happened was the boss who gave him permission was observing him working seriously at 5:00 p. m. He thought to himself: this person will not leave the work, but he's promised to take his children to the exhibition. So he took the lead in taking them there. The boss does not have to do it every time. But once it's done, loyalty is established.

    That is why all the scientists at Thumba continued to work under their boss even though the stress was extraordinarily huge. By the way, can you boldly guess who the boss was? He was none other than the mastermind behind India's successful nuclear weapons program, Dr. APJ Abdul Kalam, former president of India.

    The new study shows that we spend more time using the mobile Internet reading newspapers or magazines or doing some other things. According to the European Interactive Advertising Association(EIAA), the average European spends 4.8 hours reading newspapers and magazines but 1.6 hours more using the mobile Internet a week.

    The EIAA questioned 15,000 people in 15 European countries, looking at how people are using the Internet and its influence on their everyday lives. It found that the mobile Internet is increasingly finding its way into the public awareness. Over 71 million Europeans now have Internet access on their mobile phones. In the UK, 10 million people now access the Internet through their mobile phones and spend 6.3 hours doing so in a week.

    Unsurprisingly, younger generations in the UK are leading the way, with nearly half of the country's 16-to 24-year-olds and a quarter of 25- to 34-year-olds using the Internet, spending 6.5 and 6.2 hours online each week.

     Entertainment plays a main role in our mobile Internet lives, with one in five British people using their phones for online games, a third listening to the online radio and 39 percent watching films, TV or other videos at least once a week. One third of those using an Internet phone said they received videos, images or other multimedia on their mobile, and 61 percent said they passed on contents they received.

    From a communication point of view, 80 percent of those questioned agreed that the Internet had made it easier for them to stay in touch with friends and family.

    Alison Fennah, director of the EIAA, said the mobile Internet use had come to the point that marketers should be looking to develop strategies (策略) that connect with consumers more effectively. “Better devices as well as improved consumer motivation that start coming together in 2011 can make a great difference to extending the online experience.” Fennah said.

    Petra and Wadi Rum, Jordan

    When it comes to the world's wonderful desert scenery, Jordan's Petra and Wadi Rum has it. Also known as the Valley of the Moon, this place is one of the best due to its amazing desert canyons (峡谷) and rock walls. Participants love exploring its Burdah and Um Fruth, walking to the impressive ancient city.

Kilimanjaro, Tanzania

    The Rongai Route is the best route if the participants of the walking tour want a quiet climb. The Kili Trail permits travelers to witness the region's wilderness, virgin forests, and rare animals. This route, according to many, is the easiest way to reach the top where the breath-taking 360-dcgree sights of natural wonders await.

    Quebec, Canada

    This special environment made up of both the natural and cultural treasures, where fresh water becomes one with the tides (潮汐) of the sea, makes Quebec one of the interesting walking tour destinations in the world. Here is a track that heads to the Saguenay Fjord National Park which is included in the UNESCO World Heritage Site. Adding to the beauty of Quebec are its sparkling waterfalls, inviting lakes, and rare animals.

    Great Smoky Mountain, US

    This region has been named as the ancestral home of the Cherokee Indians, where rich natural wonders combined with interesting history are the major happenings. The rich natural reserve is evident and enjoyed by walking tour participants. What also makes this destination a popular choice is its reputation as the biggest wilderness on the eastern part of the United States.

    Nowadays, top performing sportsmen earn huge amount of money as compared to people in other professions. Some people consider it a rational approach. However, there are a few who think it is unjustifiable.

    Some people think sports professionals with outstanding performance should be overpaid as it is a short-lived career which requires rigorous hard work as compared to other professions. This field demands a strict, disciplined life with extensive physical efforts, consistent practice, a fixed diet schedule to bring pride and glory to the country. Due to such tough requirements, people in this field have an average career span of 10-15 years. As sports professionals have limited tenure, they should be rewarded with high monetary gains to acknowledge their excellent performance.

    However, there are a few who think that top performing sportsmen and women should not have high salaries as it is a biased approach. They feel that there are other critical professions which are more valuable to the country as compared to the sports field. For example, the professions, like doctors, social worker, works for the betterment of the society. Their efforts not only help to reduce the social issues prevailing in the community, but they also contribute in providing a healthy environment. As a result, they significantly contribute to the growth of the country. Henceforth, their efforts should be equally recognized along with the sports professionals.

    In my opinion, although there are some logical reasons for huge earnings of the top performing players, people from other professions should also be equally appreciated in terms of lucrative monetary benefits for their outstanding contribution. As all the professions are critical in their own field and contributes to the overall development of the country.

    To conclude, sports people delivering excellent performance should not be overpaid in comparison to other professionals who make a significant contribution to the society.

    One day a poor man was begging with an old wallet in his hand. As he felt sad at his own bad luck, he kept wondering why some wealthy people were never satisfied and were always wanting more.

    "Here," said he, "is the master of this house—I know him well. He is a wealthy businessman. He should have turned over his business to others, and then he could have spent the rest of his life happily, but he didn't. Instead, he sent his ships to sea to trade with foreign lands. However, there were great storms on the water, so his ships were destroyed and his treasure disappeared in the sea. As for me, if I had only enough to eat and to buy clothing, I would not want anything more."

    Just at that moment, Fortune came down the street. She saw the poor man and stopped. She said to him, "Listen! I want to help you. Hold your wallet, and I will pour this gold into it, but only on this condition: all that falls into the wallet shall be pure gold, but every piece that falls upon the ground shall become dust. Do you understand?"

    "Oh, yes," said the poor man.

    "Then be careful," said Fortune. "Your wallet is old, so do not load it too heavily."

    The beggar was so glad that he quickly opened his wallet, and a stream of yellow dollars poured into it. The wallet grew heavy.

    "Is that enough?" asked Fortune.

    "Not yet."

    "Isn't the wallet cracking (裂开)?"

    "Never fear."

    The beggar's hands began to tremble. Ah, if the gold would only pour forever!

    "You are the richest man in the world now!"

    "Just a little more, add just a handful or two."

    Another piece was added, and the wallet cracked. The treasure fell upon the ground and turned to dust. The beggar had nothing now but his empty wallet. He was as poor as before.