The percentage of women working in technology has decreased since the 1990s.Women make up only a quarter of all jobs in computer and math professions.I think all girls should learn how to code（编码）.Here is why.

    If we want to be part of one of the fastest growing job markets out there,we need to jump on board!Over the last ten years the growth in STEM jobs has been three times faster than that in non-STEM fields.Women will never be able to keep up with men in the professional workplace if we don't join the fastest growing fields.

    Just like hundreds of years ago,people who could read and write controlled the future,and now those who are at home with technology will shape the world we live in.You can use coding in every aspect of your life,even if you don't enter a field that involves coding.You cant use coding to create your own website or to program games.You can animate your YouTube videos,or make graphic designs.Programming is now being used in every profession, including medicine and airplane design.

    You can have fun creating your own website,programming a robot to get the remote for you when you're lying on the couch,photoshop pictures to change the color scheme to something better than the Instagram filters,and so much more.Coding allows you to realize your wildest dream,and create anything you can imagine.Coding allows you to rule the world.

    It's not very hard to learn to code.You could learn to code on YouTube,in the Girls Who Code club;you could take a free course online on Code Academy;you could even just Google how to code.

You learned to read,you learned to drive-now learn to code.

    “He almost didn't see the old lady, stranded(困在) on the side of the road, but even in the dim light of day, he could see she needed help. So he pulled up in front her Mercedes and got out.

    Even with the smile on his face, she was worried. No one had stopped to help for the last hour or so. Was he going to hurt her? He didn't look safe; he looked poor and hungry. He could see that she was frightened, standing out there in the cold. He knew how she felt.

    He said, “I am here to help you, ma'am. Why don't you wait in the car where it's warm? By the way, my name is Bryan Anderson.”

    Well, all she had was a flat tire, but for an old lady, that was bad enough. Bryan crawled under the car looking for a place to put the jack, skinning his knuckles a time or two. Soon he was able to change the tire. But he had to get dirty and his hands hurt.

    As he was tightening up the lug nuts, she rolled down the window and began to talk to him. She told him that she was from St. Louis and was just passing through. She couldn't thank him enough for coming to her aid.

    Bryan just smiled as he closed her trunk. The lady asked how much she owed him. Any amount would have been all right with her. She already imagined all the awful things that could have happened, had he not stopped. Bryan never thought twice about being paid. This was not a job to him. This was helping someone in need, and God knows there were many people who had given him a hand in the past. He had lived his whole life that way, and it never occurred to him to act any other way.

    He told her that if she really wanted to pay him back, the next time she saw someone who needed help, she could give that person the assistance they needed, and Bryan added, “And think of me.”

    He waited until she started her car and drove off. It had been a cold and depressing day, but he felt good as he headed for home, disappearing into the twilight.

    Cooperation at work is generally seen as a good thing. The latest survey by the Financial Times of what employers want from MBA graduates found that the ability to work with a wide variety of people was what managers wanted most. But managers always have to balance the benefits of teamwork, which help ensure that everyone is working towards the same goal, with the dangers of “groupthink” when critics are reluctant to point out a plan's drawbacks for fear of being kept out of the group. The disastrous Bay of Pigs invasion of Cuba in 1961 was a classic case of groupthink. Skeptics were reluctant to challenge John F. Kennedy, the newly elected American president.

    Modern communication methods mean that cooperation is more frequent. Workers are constantly in touch with each other via e-mail messaging groups or mobile calls. But does that improve, or lower performance? A new study by three American academics, tried to answer this question. They set a logical problem (designing the shortest route for a travelling salesman visiting various cities). Three groups were involved: one where subjects acted independently; another where they saw the solutions posted by team members at every stage; and a third where they were kept informed of each other's views only intermittently.

    The survey found that members of the individualist group reached the premier solution more often than the constant cooperators but had a poorer average result. The intermittent cooperators found the right result as often as the individualists, and got a better average solution. When it comes to ideal generation, giving people a bit of space to a solution seems to be a good idea. Occasional cooperation can be a big help: most people have benefited from a colleague's brainwave or (just as often) wise advice to avoid a particular course of action.

    Further clues come from a book, Superminds, by Thomas Malone of the Massachusetts Institute of Technology. He says that three factors determine the collective intelligence of cooperating groups: social intelligence (how good people were at rating the emotional states of others); the extent to which members took part equally in conversation (the more equal, the better); and the cooperation of women in the group (the higher, the better). Groups ranked highly in these areas cooperated far better than others.

    In short, cooperation may be a useful tool but it doesn't work in every situation.

    Our mother earth is going through a very tough situation and we, the entire human race, are destroying our environment or unconsciously without even realizing its consequences. Now we have to act very smartly and plan something to sustain what we still have, getting all necessary support from nature to lead healthy lives.

    Gardening is always an excellent and environmentally friendly idea. If you can go for sustainable gardening, then it will be even more useful for all. Gardening is a favorite hobby for many. It is time to channelize your hobby towards a more meaningful motivation.

    When we do gardening we need to use different ingredients (材料) to grow plants. Some of them are natural resources like water, soil, sunshine, and many things like this. Using these resources smartly is a part of sustainable gardening. Some simple techniques include: use less water and organic things to grow plants; try to store rainwater so that you can use them for gardening; try using less energy to drive devices; avoid using plastics in any form while gardening; reuse the leaves from your garden to fertilize them. These are the basic sustainable measures. To do so we need to have proper knowledge about gardening and its requirements so that we can use proper resources without wasting any of them.

    In today's busy life we don't get much time to spend on our environment. Gardening gives us a chance to do so. We can also have some pesticide-free (无农药的) and fresh food if we grow them in our garden. This is the right time to do some good to protect our own environment and gardening is one of the easiest ways. Do you want to start gardening, but you're not sure how? Click here: http://www.gardenhowto.com.

    People have been wondering why elephants do not develop cancer even though they have lifespans (寿命) that are similar to humans, jiving 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) developing. To be precise, they found 20 copies of an anti-tumor gene called TP53 in elephants. Most other species, including humans, only carry one copy.

    According to the research, the extra copies of the gene improved the animal's sensitivity to DNA damage, which 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," the study author Dr Vincent Lynch told The Guardian. If every living cell has the same chance of becoming cancerous (癌变的), large creatures with a long lifespan like whales and elephants should have a greater risk of developing cancer than humans and mice. 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 (悖论)”". 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 as elephants. This means researchers could use the discovery to develop new treatments that can help stop cancers spreading or even developing in the first place.

    "Nature has already figured out how to prevent cancer," said Joshua Schiffman, a biologist at the School of Medicine, University of Utah, US. "It's up to us to learn how different animals deal with the problem so that we can use those strategies to prevent cancer in people."

I didn't go to Santiago, Chile to look for friendship. In fact, Chile was not even on my wish list.

A mid-life crisis woman, I got a chance to study abroad. I only wanted to learn about global business, taste South American cuisine, and check "study abroad" off my wish list.

On the fifth day, I joined a group for a neighborhood work project aided by the anti-poverty (扶贫) organization. Our tasks were to build a water tower and paint the community center. Upon arrival, I couldn't believe my eyes. It was like a scene out of a horrible film. That moment redefined poverty for me because I had never seen such terrible living conditions. As advised, I showed no signs of the motional battle going on inside me.

Just as I was about to start work on painting, a request came through for a few volunteers to help Nadia, a local resident who volunteered to cook for us. I raised my hand to help because I wanted spend time with the people of the neighborhood despite my shortage of Spanish speaking skills.

Nadia had a sincere smile but not overly friendly. Even without speaking each other's language we started to learn about one another. We chatted about our children, our upbringing, shared picture of our family, struggled to instruct each other to communicate in the other's language, and laugh many times.

After we fed everybody and the dishes were washed, my day was over. But I found myself hesitant to leave. It was as if I had known her my entire life. I had not predicted the unselfishness heart I would encounter, and it was moving.

As we were waiting for the car to pick us up, Nadia showed me her plants that are well-maintains. I could see that despite the hard conditions she was passionate about life. She made me long to be stronger person. She showed me that poverty was external, but happiness was internal. I was seeking to give 100 percent for a well-intentioned cause, but I left receiving 200 percent from her.