A small group of people around the world have started implanting(移植) microchips to link the body and the computer.

    Mr. Donelson and three friends, who had driven 100 miles from their homes in Loockport, New York, to have the implants put in by Dr. Jesse Villemaire, whom they had persuaded to do the work, are part of a small group, about 30 people around the world, who have independently put in microchips into their bodies, according to Web-based reports.

    At a shop William Donelson was having a four-millimeter-wide needle put into his left hand. “I'm set,”he said with a deep breath. He watched as the needle pierced(刺穿) the fleshy webbing between his thumb and a microchip was set under his skin. At last he would be able to do what he had long imagined: strengthen his body's powers through technology.

    By putting the chip inside—a radio frequency identification device (RFID)—Mr. Donelson would have at his fingertips the same magic that makes safety gates open with a knock of a card, and bridge and tunnel traffic flow smoothly with an E-Zpass. With a wave of his hand he plans to connect with his computer, open doors and unlock his car.

    Implanting the chip was relatively simple task but very meaningful to Mr. Doneselson, a 21-year-old computer networking student so interested in the link between technology and the body that he has data-input jacks(数据输入插空) inside his body. They might lead to an imagined future when people can be connected directly into computers. His new chip is enclosed in a glass container no bigger than a piece of rice and has a small memory where he has stored the words “Technology”.

    Some doctors have done the piercing in people's homes, and others have implanted chips in their offices after patients signed forms showing the fact that long-term studies have not been done on their safety. Piercers treat the implants much like any other medical operation steps, instructing people to keep the site dry, and advising them that swelling and redness should last a week.

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    There have been times in my life when I felt satisfied.Sometimes it was because I achieved a goal I had set. Sometimes it was because I overcame a fear or passed a test.However,every time I feel that way,I learn again that full isn't full.

    When I was a little boy,I felt that the love I had for my mom and dad,and the love they had for me,just filled me up.Surely in a house full of nine people lived a young boy who loved and was loved as fully as a person could stand. Imagine my surprise as I then extended（扩大影响）that love to my grandparents,my uncle & aunt,cousins,etc.As I grew older,I met and married a beautiful woman that I thought entirely filled me up with love.I could not imagine there would be any more room.Then a few short years later we added one daughter and then another daughter to our family.Again,I had room to love and be loved.See what I mean?Every time I feel that life and love are as good as they can get,they get better.

    There is a lesson here for us.We ought to always have a heart that is open to expanding.To do more,love more, live more,learn more,overcome more,forgive more and the list could go on.Each of us knows 100 stories about men and women who have proved the impossible to be possible.Every day we stand at the crossroad and must decide if we are going to be a better person today than we were yesterday.

    You are not full yet.Young or old,there is still room for more.

    What do Leonardo da Vincii, Marie Curie, and Albert Einstein have in common? They were all left-handed, along with other famous people including Brad Pitt Prince William, and Barack Obama. In fact, an estimated 13 percent of the world's population may be left-handed and still most people around the world are right-handed.

    What makes a person become right-handed rather than left-handed? As yet no one really knows for sure. One simple idea suggests that people normally get right-handedness from their parents. Studies have found that two right-handed parents have only a 9.5 percent chance of having a left-handed child, whereas two left-handed parents have a 26 percent chance of having a left-handed child. Another common theory is that left-handed people suffer mild brain damage during birth, which makes them left-handed. However, if this theory were true, it would not explain why the percentage of left-banded people is so similar in every society, when birth conditions vary so much from society to society.

    Whatever the reasons behind it, people's attitudes toward left-handedness have changed a lot over the years. Statistics show that although 13 percent of young people (10-20 years old) are left-handed, only 6 percent of the elderly are left-handed. Left-handed children used to be punished until they began using their right hand like other children, but today people who are left-handed are no longer looked down on nor are they considered abnormal. For most people today, either case is perfectly acceptable.

    Next time you make yourself a hot cup of tea or coffee, you might want to let it cool down a bit before drinking.

    Researchers say letting your hot drinks cool off could help you avoid some kinds of cancer. Researchers at the International Agency for Research on Cancer (IARC) found evidence that drinks at temperatures above 65℃, when swallowed, can cause cancer of the esophagus (食道). The researchers examined findings from other studies where tea and coffee were often served at 70℃ or above. Those studies were completed in Iran, China and South America.

    In developed countries, health experts have linked esophageal cancer to smoking and alcoholic（酒精）drinks. However, this form of cancer is more common in areas where people drink beverages（饮料；酒水）at very high temperatures.

    In Europe and the United States, many people drink coffee and tea at temperatures around 60℃.And they often add milk which lowers the temperature greatly. However, tea-drinkers in Iran and mate-drinkers in South America often enjoy their beverages at closer to 70℃.

    The researchers find that South Americans not only drink their mate very hot, they also drink it through a metal straw(吸管). This sends the scalding liquid directly into the throat.

    The findings, however, are good news for coffee drinkers. In 1991, the World Health Organization listed coffee as possibly carcinogenic (致癌的).” The WHO officials have since changed their position on that listing. They now suggest that the temperature of your hot drink is a greater risk factor than the actual drink itself.

    The results suggest that drinking very hot beverages is one probable cause of esophageal cancer and that it is the temperature, rather than the drinks themselves, that appears to be responsible.

    Like many other people, I love my smart phone, which keeps me connected with the larger world that can go anywhere with me. I also love my laptop, because it holds all of my writing and thoughts. In spite of this love of technology, I know that there are times when I need to move away from these devices and truly communicate with others.

On occasion, I teach a course called History Matters for a group of higher education managers. My goals for the class include a full discussion of historical themes and ideas. Because I want students to thoroughly study the materials and exchange their ideas with each other in the classroom, I have a rule —no laptop, iPads, phones, etc. When students were told my rule in advance of the class, some of them were not happy.

    Most students assume that my reasons for this rule include unpleasant experiences in the past with students misusing technology. There's a bit of truth to that. Some students assume that I am anti-technology. There's no truth in that at all. I love technology and try to keep up with it, so I create to my students.

    The real reason why I ask students to leave technology at the door is that I think there are very few places in which we can have deep conversions and truly engage complex ideas. Interruptions by technology often break concentration and allow for too much dependence on outside information for ideas. I want students to dig deep within themselves for inspiration and ideas. I want them to push each other to think differently and make connections between the course materials and the class discussion.

    I've been teaching my history class in this way for many years and the evaluations reflect students' satisfaction with the environment that I create. Students realize that with deep conversation and challenge, they learn at a level that helps them keep the course materials beyond the classroom.

    I'm not saying that I won't ever change my mind about technology use in my history class, but until I hear a really good reason for the change, I'm sticking to my plan. A few hours of technology-free dialogue is just too sweet to give up.

    Student travel promises to be an enjoyable trip. Not only can students visit several places, they also can learn so much on every trip. For first-time travelers, here are some historical destinations for students to travel.

    Athens

    It was the center of knowledge, government and system in the ancient world, and every student would be amazed at how this ancient city grew and evolved. Students can visit Acropolis, Agora, Library of Hadrian, Kerameikos, Olympieion & Southeast Athens. Pnyx, Roman Agora & Tower of the Winds, Arch of Hadrian, City Eleusinian and other ancient sites in this, ancient city of Athens.

    Egypt

    Egypt features 3,000 years old city on the banks of River Nile. Moving your way south from Cairo, the nation's capital, you can stop at Giza where the famous Great Pyramid stands. It was built by Pharaoh Khufu in 2550 BC. Further south, Saqqara is home to the Step Pyramid of Djoser built in 2630 BC. In Dahshur, the Bent and the Red Pyramids are located. And down south at Maidum, the Maidum Pyramid can be found.

    Rome

    See ancient Rome still shine with evidences of Raman structure and architectures built more than 2,000 years ago Rome presents the living timeline from the Roman Empire to the shift of the Middle Ages, to the dawn of the Romantic period and Enlightenment (启蒙运动). Rome preserves its temples, churches, arts, and priceless paintings and murals.

    Peru

    As the center of the Inca civilization, Peru is a great destination for students travel for discovery of South American history. The 500-year old Inca traces could be relived in the Inca Trail that is both exciting and educational. Walk to the Ollantaytambo, Sacsayhuaman, Machu Picchu, and Pisac to have a visit.