In 1917 Orville Wright predicted that “the aeroplane will help peace in many ways —in particular I think it will have a tendency to make war impossible.” Earlier in 1904, American journalist John Walker declared, “As a peace machine, the value of the aeroplane to the world will be beyond computation.” This wasn't the first grand promise of technology. In that same year Jules Verne announced, “The submarine(潜艇) may be the cause of bringing battle to a stoppage.”

    Alfred Nobel, sincerely believe his dynamite(火药) would be a war obstacle: “My dynamite will sooner lead to peace than a thousand world conventions(公约).” Similarly, when Hiran Maxim, inventor of the machine gun, was asked in 1893, “Will this gun not make war more terrible?” he answered, “No, it will make war impossible.” Gugliemo Mareconi, inventor of the radio, told the world in 1912. “The coming of the wireless time will make war impossible, because it will make war ridiculous.” General James Harbord, chairman of the board of RCA in 1925, believed, “Radio will serve to make the concept of Peace on Earth, Good Will Toward Men a reality.”

    David Nye, a historian of technology, adds to the list of inventions imagined as abolishing war forever and leading to universal peace the hot-air balloon, poison gas, land mines and laser guns.

    It is not that all these inventions are without benefits—even benefits toward democracy（民主）. Rather, it's the case that each new technology creates more problems than it solves. “Problems are the answers to solutions,” says Brian Arthur.

    Most of the new problems in the world are problems created by previous technology. These problems are nearly invisible to us. Every year 1.2 million people die in automobile accidents. The technological transportation system kills more people than cancer. Global warming, environmental poisons, nuclear terrorism, and species loss, are only a few of the many other serious problems troubling people.

    If we embrace(拥抱) technology we need to face its costs.

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    In recent years, remote-sensing technologies have become ordinary in archaeological fieldwork（实地考察）. Such tools for excavation produce rapid results and cause no damage to archaeological sites. They are highly accurate and usually cost effective. Here are three of the modern archaeologist's most trusted remote-sensing tools.

    As the simplest of the remote-sensing techniques that archaeologists use, aerial（空中的）photography allows experts to see aspects of a site that may be invisible from the ground, such as the way in which something such as a town, garden, or building is arranged and traces of old walls and roads. The technique involves taking photographs with conventional cameras and filming from airplanes, helicopters, hot-air balloons, or other airborne vehicles.

    Geographic Information System (GIS) contains a large amount of field data archaeologists typically collect in and around excavation sites. While in the field, archaeologists use GIS on their computers to make and manage detailed site maps, and they can combine the results of remote-sensing tests with maps of the region created with the aid of Global Positioning System. Resulting maps sort the most archeologically promising areas and display these sites three-dimensionally.

    Ranging in size from small handled models that one places against the ground to larger ones that one across a site, Ground Penetrating Radar (GPR) devices use low-power radio waves to detect changes underground. Unlike traditional radar, which broadcasts into the air and uses a dish to focus the returned waves, GPR uses a small but sensitive receiver placed directly against the ground. Depending on their needs, archaeologists can adjust radio frequencies upward for shallow sites or downward for deeper areas, though GPR devices produce the greatest definition（清晰度）when reading depths of three feet or less.

    In 2016, three viruses made news, and they present difficult problems for health officials in the New Year. One virus threatens babies in many parts of the world. Another has reappeared in an African nation. And a third is one of the deadliest viruses of modern times. The three viruses are Zika, polio and HIV. However, in 2016 scientists and researchers from all over the world worked to make progress against those viruses and to develop better ways to control them.

    The spread of the Zika virus caused public health officials in many nations to put in place strong measures to control its spread.

    Brazil, which hosted the 2016 Summer Olympic Games, was hit hard by the virus. Health officials warned pregnant women against traveling to the sporting event. Zika is usually a mild illness. It is so mild that most people who are infected do not know they have it. However, in the past two years in the Western Hemisphere, Zika has been linked to babies being born with extremely small heads. This condition is called microcephaly. The international medical community found that this link to birth defects makes Zika a very dangerous virus.

    Zika first appeared in Uganda more than 60 years ago. It is spread by mosquitos and by sex. The virus recently appeared in Brazil. Then cases appeared in other countries to the North. Cases were reported in the United States in the southern state of Florida. Health officials in Texas are also concerned the virus might be spreading there.

    Doctors can only advise women to be careful. They advise women not to travel to areas where the virus is spreading, to avoid mosquito bites or to delay pregnancy. Currently there is no vaccine against Zika. However, one could be available by 2018.

    A Chinese scientist's attempt to produce the world's first gene-edited babies who are immune to HIV has caused floods concern.

    In an online video posted on Monday, He Jiankui, a biological researcher, announced that a pair of twin baby girls, Lulu and Nana, was born healthy a few weeks ago with genetic editing technology that can prevent them from being infected with HIV.

    He, who was believed to be in Hong Kong on Monday to attend the Second International Summit on Human Genome Editing, could not be reached for comment. But his announcement sparked a heated argument concarning medical ethics（伦理）and effectiveness.

    The Shenzhen Health and Family Planning Commission said on Monday evening that it had not received any ethical assessment application for the study, which is required as a prior condition for such experiments.

    More than 120 scholars from universities and institutes with high status from China and abroad,such as Tsinghua University and the Massachusetts Institute of Technology (MIT),strongly condemned the research in a signed statement, saying the “research” lacks effective ethics inspection, and it amounts to human experimentation,which is “crazy”.

    In the statement, published on Sina Weibo, the scientists said any attempt to make changes to human embryos with genetic editing and give birth to such babies involves high risk as an inevitable part, due to inaccuracies in existing genetic editing technologies.

    “Scientists all over the world dare not make such attempts due to the huge risks and more importantly, ethics. The government must make quick legal moves to strictly supervise（监督）such research. The Pandora's Box has been opened, and we may still have a chance of closing it before it is too late,”the statement said.

    Tsui Lap-chee, president of the Academy of Sciences of Hong Kong, said a lot of issues may occur in gene editing. If one gene is edited, it will affect others that interact with it. And the whole genome, a collection of genes, may also be affected.

    When I was young, I read many kinds of books, including fairy tales. Most of the books described heroes who were handsome and heroines who were beautiful. So, I believed I had to be beautiful if I wanted to become a great person.

    As I grew up, I began to realize outer beauty was not so important to make someone good. I remember a friend of mine, Janie, who was so beautiful that every classmate wanted to talk with her, but she was very arrogant(傲慢的).

    She believed that she could do everything she wanted because she was so beautiful, but she lost friends one by one. My poor friend! But she learned a good lesson: inner beauty is more important than outer beauty. After she learned that, she changed her attitude and made friends again.

    Whenever I see TV advertisements, I feel that these things make us believe beauty is very important—especially physical attractiveness. Although we say that inner beauty is more valuable, we often look to plastic surgery to make us more beautiful. There seems to be a boom(流行) in plastic surgery. It is surprising to realize the number of people who try it is increasing day by day.

    We know good-looking guys usually get higher scores on job interviews. So, what is real beauty? I want to say that inner beauty is the real one because if someone has beauty in his soul, he looks like a really beautiful person.

    The beauty looked at with eyes doesn't last forever. Instead of concentrating on outer beauty, we should concentrate on inner beauty. The point is that inner beauty is more important than outer beauty. So, if we make the effort to make our minds beautiful, we'll be happier.

One sunny afternoon in the park, I witnessed a remarkable scene. An elderly gentleman was standing by the side of a path, looking confused and lost. Just at that moment, a kind- hearted young girl approached him. She asked him gently what was wrong and listened patiently as he struggled to explain.

Without hesitation, the girl took his hand and slowly guided him along the path, chatting with him to ease his anxiety. They walked together until they reached the place the old man was supposed to be. The old man smiled with thankfulness and relief.

After helping the old man, the girl didn't just leave. She spent some more time with him, sharing some interesting stories and making him laugh. The old man's eyes sparkled with joy, and it was clear that this interaction had brightened his day. The girl's kindness seemed to have an effect, as other people in the park also noticed and were inspired by her actions.

I continued to observe as the girl then decided to stay with the old man for a while longer. They sat on a bench together, and the girl began to tell him about her own life, her dreams, and her adventures. The old man listened attentively, nodding and smiling from time to time. It was a beautiful sight to behold, this unlikely pair sharing such a genuine and heartwarming connection.

This encounter made me reflect on the importance of kindness in our society. In a world that can often seem cold and hurried, acts like the girl's are like the tower of light, showing us the way to a more empathetic（同情的）and caring existence. It also made me think about how we all have the potential to make a difference in someone else's life, no matter how small the act may be.

Now, whenever I recall this scene, it warms my heart and reminds me to be more willing to offer a helping hand, to spread kindness wherever I go, and to believe in the goodness that lies within each of us.