Does stress cause gray hair? Many people believe that tension and stress can cause your hair to lose its color. In fact, it is an old-wives' tale that being upset all the time can result in premature graying. Here is a closer look at this situation and why some believe that this old wives' tale could be true.

    As one ages, the hairs on the head also age. In fact, just about everything on the human body begins to show signs of wear and tear (磨损) after a while. The joints wear and become stiff and skin wears and becomes wrinkled. Hairs on the head grow and eventually die. They are replaced, but in the process something else happens.

    When new hairs are replacing the old ones, the color or pigment (色素) is also added to them. However, as one ages, this pigment becomes less and less available. At first, hairs will have a limited amount of pigment and they will appear to be grayish in color. In time, they will lose all of their pigment and will be white. Many things are known to cause graying, and genetics is a very powerful factor. If one of your parents turns gray at an early age, there is a good chance that you will too. Some people begin the graying process in high school, while others may be over the age of forty.

    Constant worry and tension can have many harmful effects on the human body. It is a known fact that stressful times can cause one to suffer hair loss. It would make sense that if it can cause these problems, perhaps it also may contribute to graying. However, there is no sound evidence to support this.

    On the other hand, many medical professionals believe that there may be a link between graying and a constant state of anxiety or tension. Does stress cause gray hair? There is no scientific evidence to support the theory, but it is best to avoid stressful situations.

    We don't know how different our life will be in the future. We can only try to imagine it.

    At first we think about human relationship. In the year 2050, we will use computers almost everyday. We will make new friends through the Internet—even our husbands or wives will be met in this way. It will be much faster and easier for us. On the other hand, our relationships with people won't be as important as they are today—we will feel a little lonely.

    Computers will also help us in many other activities in 2050.For example, they will be used by the children at school to make their learning easier. In addition, there will be much more other machines which will play a similar role as computers, like robots which will do the housework for us.

    Spending holidays will also be completely different. Traveling to other planets or to the moon will be available for everyone. Means of transport will, of course, change, too. We will use solar-powered cars, which will be much cleaner.

    We could expect that the faster technological progress would lead to a more polluted environment. But it isn't true. We will pay more attention to protecting the environment. And, scientists will probably find cures for many dangerous diseases, like cancer or AIDS. Therefore, our surroundings as well as health will be in better condition.

    Although we can't predict the exact changes which will be made in the world, we often think about them. We worry about our and our children's future; we have expectations, hopes as well as fears. But I think we should be rather hope about our future. We should be happy and believe good things will happen.

    Dr. Nancy Roman, born in 1925, who was celebrated as a pioneer for female scientists and had advanced the launch of the Hubble Space Telescope, died on Dec 25, 2018.

    When Nancy Roman asked for permission to take a second algebra (代数)course in high school,a teacher demanded to know "what lady would take mathematics instead of Latin". In college, a professor admitted that he often tried to prevent women from majoring in physics but Nancy stuck to it. And after receiving Doctor's degree in astronomy. , she found a professional home at NASA(美国宇航局)In 1959, Dr. Roman became the first chief of astronomy at NASA. headquarters, a role that made her one of the agency's first female leaders.

    Dr Roman spent much of her career helping develop, fund and promote technology that would help scientists see more clearly beyond Earths atmosphere. But her most well-known work was perhaps leading to design the Hubble Space Telescope the first major telescope to be sent into space for the purpose of gathering photographs and data from the universe. She was, therefore, named as "the mother of Hubble".

    "She made it possible to get the early telescope up into space to learn what needed to be learned," said science historian Bob Zimmerman: and her hard-nosed nature helped get the telescope built.

    The telescope did not launch until 1990, a little more than a decade after Dr Roman retired, but when it did, its photographs of the universe thrilled the world.  I am glad, "she once told Science, "I ignored the people who told me that I could not be an astronomer. "

The Young Scholars Program

    The University of Maryland's Young Scholars Program is a perfect summer camp for academically talented teenagers who want to earn college credits, pursue academic interests or discover college life at the University of Maryland. The program is challenging and rewarding. Students have the opportunity to show that they can be successful in a university environment.

    The Activities

    During three weeks of exploration, teens preview the university experience, study with students who share similar interests and communicate with the best teachers of the University of Maryland in a dynamic and challenging classroom environment. Students can have trips to nearby Washington, DC and enjoy movie nights and activities at the student union. Workshops and seminars featuring speakers in academic fields further enrich the learning experience.

    The Courses

    The Young Scholars Program offers college courses that are at the cutting edge of theory, thought and technology. Classes generally meet every day from Monday to Friday. The program is a great introduction to the University of Maryland, Participants can benefit from the University of Maryland's vast resources, including libraries, computers and instructional labs.

    The Rewards

    Upon program completion, teens will go home with better preparations for the college experience—both academically and socially. In addition, students earn three college credits that post to the University of Maryland transcript (成绩单).

    The Application

    The application process includes submission of the application, high school transcript and a letter of recommendation.

    Ages: 14-18

    Mailing address: The University of Maryland College Park

    For more information, call 3014057762.

    Fourth-grader Alice Tapper was on a school field trip when she noticed that most of the girls quietly stayed at the back of the group, while the boys gathered at the front and raised their hands to answer questions. The 11-year-old then realized how often she and her female classmates didn't speak up in class for fears of getting an answer wrong and being embarrassed.

    She decided to change this and launched a campaign to encourage girls to have faith in themselves, even take risks and be leaders —— and support other girls in doing the same. With assistance from her Girl Scout troop (女童子军), she created a new Raise Your Hand program, and soon girls around the country were taking a pledge(承诺) to raise their hands in class.

    In my work as an administration coach I see many women (and some men) with habits that are holding them back. Women at work tend to hang back in meetings for fear they may not have the right answer. They will spend countless hours (and sometimes days) replaying the tapes in their head, while males in similar situations simply move on, until they are perfect when instead they should be establishing relationships. The truth is that after a year no one remembers your nice report. Forget perfect. It doesn't exist. Say what's on your mind and let things go.

    Similarly, women tend to talk more softly than men, which can be problematic, especially the higher up in the organization you go. To have an influence on business, it's not enough to have a seat at the table. You have to have a voice and people have to hear from you. Don't wait for an invitation. Raise your hand, say what you have to say, and when you see an opportunity, go for it!

When it comes to commemorating a child's first year of life, the traditional approach often involves presenting an exquisitely adorned confectionery masterpiece to the young celebrant. By simply setting this visually striking sugar creation before the infant and activating the recording devices, one can capture the ensuing delightfully chaotic scene, replete with smiles and smears of frosting.

However, this will not be the method I choose to honor my daughter's initial 12 months of existence—not because the sweet treat will be absent, but because my spouse and I have resolved to abstain from sharing her images on social platforms for an entire year, and we are determined to maintain this practice for the foreseeable future.

I understand that I am part of a select few. Research indicates that approximately seventy-five percent of parents habitually upload photographs of their offspring to the internet. Pixsy, a platform that assists photographers in identifying unauthorized usage of their work, discovered that parents in the age bracket of 20 to 25 are twice as likely as their older counterparts to disseminate images of their little ones on social media platforms.

Yet, I am not the only one who feels this way. A woman instrumental in the creation of Big Little Feelings—an Instagram account with 2.8 million followers that provides guidance to new mothers—recently decided to remove all the pictures she had previously posted of her children.

The discourse surrounding "sharenthood," or the inclination of parents to broadcast their children's lives online, has been fervently ongoing for some time. The everyday choices made by parents have a significant, yet often undervalued, impact on the digital legacy of young individuals and their subsequent life trajectory.

Technological advancements have introduced fresh challenges for parents. The latest development in artificial intelligence is the emergence of image-generating tools. By inputting a series of descriptive terms into a text field, AI can generate a visual representation of the described subject. The datasets for these AI-driven generative systems are frequently sourced from the open internet.

While it is improbable that my daughter's Instagram photos would be processed through such an AI assembly line, resulting in her likeness appearing in someone's creative AI-generated artwork, once images are disseminated on the web, they can be exceedingly difficult to eradicate completely.

I do share photographs with friends and family via secure, private messaging applications. However, these closed networks are fundamentally distinct from public postings on the open internet.