One night about nine o'clock, Dr. Eyck, a surgeon, had a phone call from Dr. Haydon at the hospital in Clens Falls. The surgeon was asked to go there at once to operate on a very sick boy who shot himself while playing with a gun.

    The doctor was soon on his way to Clens Falls. It was 60 miles away. And it was snowing heavily in the city. The surgeon thought he could get there before 12 o'clock.

    A few minutes later, the doctor was stopped by a man in an old black coat. Gun in hand, the man ordered the doctor to get out. Then the man drove the car down the road, leaving the doctor in the falling snow.

    It was after 2 o'clock in the morning when the doctor arrived at the hospital in Clens Falls. Dr. Haydon told him that the boy had died an hour before. The two doctors walked by the door of the hospital waiting room. There sat the man in the old black coat with his head in his hands“Mr. Cuninghan,”said Dr. Haydon to the man, “This is Dr. Eyck. He is the surgeon who walked all the way from Albany to save your boy.”

    Some inventions are so useful, but seem so simple, that we wonder why no one thought of them long ago. Post-it Notes, the pieces of paper that you can stick almost anywhere and then remove without leaving any sign that they are there, are an example of such an invention.

    Post-it Notes were invented about twenty years ago by Art Fry, a scientist at 3M Corporation. The idea for the product came from an upsetting experience he often had while singing in his church choir. Fry used pieces of paper as bookmarks to mark the places in his book of songs, but these bookmarks were always falling out. He knew he needed a bookmark that would stay where he put it, but that he could remove without damaging the pages.

    Around that time, Fry heard about a new adhesive(粘合剂) that a colleague, Dr. Spence Silver had created. This adhesive was special because it was sticky, but not too sticky. It was strong enough to hold papers together, but weak enough not to tear the paper when it was removed. Fry saw that the new adhesive could help solve his bookmark problem. One morning, Fry put some of the adhesive on the edge of a piece of paper. Just as he hoped, it made a perfect bookmark.

    A short time later, Fry realized that his new invention had even more uses than being a great bookmark. He came to this realization when he wrote a note on one of his new “bookmarks” and attached it to a report he was going to give to a colleague. Soon, co-workers were asking Fry for more sample of his invention so that they could use the new type of notes themselves.

    Fry and some other people at 3M believed so much in the new product that they persuaded the company to give away thousands of the sticky pieces of paper for trial use. When some salespeople at 3M went to offices and showed workers just how helpful the new type of notes could be, they immediately received many orders. As more and more people discovered how useful Post-it Notes could be, the product took off.

Dear 17-year-old self,

    When your Laker dream comes true tomorrow, you need to figure out a way to invest in the future of your family. This sounds simple, and you may think it's a no-brainer, but take some time to think on it further.

    I said INVEST.

    I did not say GIVE

    Let me explain.

    Purely giving material things to your siblings（兄弟姐妹） may appear to be right decision. So you buy them a car, a big house, pay, all of their bill. You want them to live a beautiful comfortable life, right？

    But the day will come when you realize that as much as you believed you were doing the right thing, you were actually holding them back.

    You will come to understand that you were taking care of them because it made YOU feel good, it made YOU happy to see them smiling and without a care in the world﹣and that was extremely selfish of you. While you were feeling satisfied with yourself, you were slowly eating away at their own dreams and ambitions. You were adding material things to their lives, but subtracting the most precious gifts of all.

Invest in their future, don't just give.

    Use your success, wealth and influence to put them in the best position to realize their own dreams and find their true purpose. Put them through school, set them up with job interviews and help them become leaders in their own right. Hold them to the same level of hard work and dedication that it took for you to get to where you are now, and where you will eventually go.

    I'm writing you now so that you can begin this process immediately, and so that you don't have to deal with the hurt and struggle of weaning（断绝） them off of the addiction that you facilitated That addiction only leads to anger, hatred and jealousy from everybody involved, including yourself.

    As time goes on, you will see them grow independently and have their own ambitions and their own lives, and your relationship with all of them will be much better as a result.

    Trust me, setting things up right from the beginning will avoid a ton of tears and headache, some of which remains to this day.

Much love

    Elephants have impressed us for centuries. They are big, clever, and sociable. But what if someone told you that they may also hold the key to fighting cancer (癌症)?

    People have been wondering why elephants do not develop cancer, even though they have lifespans (寿命) that are similar to humans, living for around 50 to 70 years.

    Now scientists believe they know why. A team at the University of Chicago, US has found that elephants carry a large number of genes that stop tumors (肿瘤) from developing. To be precise, they found 20 copies of an anti­tumor gene called TP53 in elephants. Most other species, including humans, only carry one copy.

    According to the research, which was recently published on the online science network BioRxiv, the extra copies of the gene improved the animal's sensitivity to DNA damage. This lets the cells quickly kill themselves when damaged before they can go on to form deadly tumors.

    “An increased risk of developing cancer has stood in the way of the evolution of large body sizes in many animals，” study author Dr. Vincent Lynch told The Guardian. If every living cell (细胞) has the same chance of becoming cancerous, large creatures with long lifespans like whales and elephants should have a greater risk of developing cancer than humans and mice do. But across species, the risk of cancer does not show a connection with body mass.

    This_phenomenon was found by Oxford University scientist Richard Peto in the 1970s and later named "Peto's paradox". Evolutionary (进化的) biologists believe it results from larger animals using protection that many smaller animals do not. In the elephant's case, the making of TP53 is nature's way of keeping this species alive.

    The study also found that when the same genes were brought to life in mice, they had the same cancer resistance (抵抗) as elephants. This means researchers could use the discovery to develop new treatments that can help stop cancers from spreading or even developing in the first place.

    "Nature has already figured out how to prevent cancer, " said Joshua Schiffman, an oncologist at the School of Medicine, University of Utah, US.

    “It's up to us to learn how different animals tackle (处理) the problem so we can use those strategies to prevent cancer in people.”

    A project in Gambia is empowering women and reducing dangerous waste at the same time.

    The Waste Innovation Center, funded by the European Union's Global Climate Change Alliance, shows women in the Brikama area how to recycle waste into useful materials and products, which they can then sell in local markets.

    Wood-like waste is recycled into charcoal (木炭), for example, which can be used to supersede firewood and reduce the number of trees that are cut down for firewood. Food waste is recycled into compost(混合肥料)to function as environmentally friendly fertilizers and plastic is turned into many useful things.

    Supported by Waste Aid UK and the Gambia Women's Initiative (GWI), among others, the project provides women with skills they can use to become self-sufficient (自给自足的). Women learning at the center come from five communities, and some of them travel as far as 12 miles to learn these important skills that will provide them with an income, according to The Guardian.

    Isatou Ceesay, who now leads the GWI, highlighted the need to focus on economic equality in her country, telling The Guardian, "In terms of education, women are the ones who are always behind. Boys are chosen to go to school. When we conduct our training, we find women can do a lot, but don't know who they are, or how to carry out things. "

    According to the World Health Organization's Country Cooperation Strategy 2018—2023 report, the main environmental issue facing Gambia is poor waste management in urban areas. Ndey Sireng Bakurin, executive director of the National Environment Agency, has voiced concern over health and environmental risks, such as water pollution, the increase of insects as well as flooding that occur as a result of poor waste management.

Located in southern Anhui Province, Mount Huangshan (黄山) covers {#blank#}1{#/blank#} area of 250 kilometers, of {#blank#}2{#/blank#} 154 square kilometers are scenic attractions. Its landscape features "four wonders" of imposing peaks, spectacular rocks, odd-shaped pines, and a sea of clouds. 

Mount Huangshan boasts 72 peaks, more than 1, 000 meters above sea level, with three main peaks rising majestically. They are both fascinating and {#blank#}3{#/blank#}(danger). Cliffs, stone forests, stone pillars, stone blocks and egg-shaped stones form the unique granite geomorphological(地貌的） scenery. 

The pines on the mountain are tall and have fascinating{#blank#}4{#/blank#}(shape). The famous Welcoming Guests Pine (Yingke Song) (1, 500 years old) and See-Guest-Off Pine have become a symbol of being faithful, unyielding(不屈的) and hospitable. More than 200 days each year on Mount Huangshan are misty and cloudy. The vapors coagulate(凝结）to form a sea of clouds. As the clouds cloak the mountain, they give a feeling of being in fairyland. 

Mount Huangshan has more than 400 famous scenic attractions of which 140 have been developed and opened to {#blank#}5{#/blank#}(tour). 

In 1990, Mount Huangshan went on both the world cultural {#blank#}6{#/blank#} natural heritage lists. Is it really so beautiful?