My Experience in Ghana

    I decided to take part in an exchange program in Ghana. The 30 of us participating in the program met up the first morning in Ghana to meet Fred, our guide in Ghana.

    We boarded the bus to Senase, a village of 3,000 in Northwest Ghana. Once we got to the village, we were greeted by the queen mother and the other elders. A young girl performed a dance for us with Ghanaian drums, and then the elders each thanked us for coming to the village and helping their children and their schools.

    After our meeting ended, we split up into three groups and went to different schools, spending most of the day handing out toothbrushes and school supplies, meeting with the children, and playing games with various classes. It was really interesting to see the schools and to see what all of the different classes were learning.

    We got back to our host's house that night literally seconds before the skies opened up over Senase, and since the power was out, Fred, Cari (my roommate) and I sat out under the roof listening to the pouring rain and talking about our lives. We were able to hear Fred's story, which was absolutely incredible. I can say it gave me a new sense of respect for the Ghanaian people, their unity in the face of tremendous hardship, and the immense amount of care and love they hold in their hearts, not only for their families but their entire community.

    The next day we performed our dance for one of the schools, to the delight (and laughter) of the children, queen mother, and principal. After that we were on the bus heading back.

    During the bus ride, new thoughts and questions filled my mind. Where is this fire Senase lit in my heart going to take me, and how can I feed it and build it into real change? How do I bring this back to my community, and then back home to my family and friends? These were only a few of the questions that I was struggling with and continue to struggle with, and I can't say I have found any answers yet. All I know is that Senase did light a fire within me, and I refuse to ever let it burn out.

    Imagine a mass of floating waste is two times the size of the state of Texas. Texas has a land area of more than 678,000 square kilometers. So it might be difficult to imagine anything twice as big. All together, this mass of waste flowing in the North Pacific Ocean is known as the Great Pacific Ocean Garbage Patch（太平洋垃圾带）. It weighs about 3,500,000 tons. The waste includes bags, bottles and containers-plastic products of all kinds.

    The eastern part of the Great Pacific Ocean Garbage Patch is about 1,600 kilometers west of California. The western part is west of the Hawaiian Islands and east of Japan. The area has been described as a kind of oceanic desert, with light winds and slow moving water currents（流，流动）. The water moves so slow that garbage from all over the world collects there.

    In recent years, there have been growing concerns about the floating garbage and its effect on sea creatures and human health. Scientists say thousands of animals get trapped in the floating waste, resulting in death or injury. Even more die from a lack of food or water after swallowing pieces of plastic. The trash can also make animals feel full, diminishing their desire to eat or drink.

    The floating garbage also can have harmful effects on people. There is an increased threat of infection（感染）of disease from polluted waste, and from eating fish that swallowed waste. Divers can also get trapped in the plastic.

    Its existence first gained public attention in 1997. That was when racing boat captain and oceanographer Charles Moore and his crew sailed into the garbage while returning from a racing event. Five years earlier, another oceanographer learnt of the trash after a shipment of rubber duckies got lost at sea. Many of those toys are now part of the Great Pacific Ocean Garbage Patch.

    In August,2017, a team from the University of California, San Diego became the latest group to travel to it. They were shocked by the amount of waste they saw. They gathered hundreds of sea creatures and water samples to measure the garbage patch's effect on ocean environment.

    Even now, almost a year after their astonishing act of group heroism, the dozens of people who risked their lives to save two boys from drowning in Panama City Beach, are still remembered.

    The story began on July 8, 2017. Members of the Ursrey family, eight in total, were enjoying an evening together at the beach. As the sun sank lower on the horizon（地平线）, the two boys—Noah, 11, and Stephen, 8—took their skateboards and walked into the waves without the grown-ups noticing. When the boys were about 70 yards from shore, they realized that the ocean pulled them out to sea. After trying and failing to paddle（涉水）back, they started waving and screaming for help. But the lifeguards had clocked out for the evening.

    The boys had been struggling for several minutes when Brittany and Tabatha Monroe, a married couple from Georgia, wandered by. They didn't see the boys at first, but they heard them.

    They jumped into the water and easily reached the brothers, who were still in fairly shallow water. The woman reassured the frightened boys and seized their skateboards, telling them they would be safe and then discovered that they, too, were now in a world of trouble. They couldn't get back to shore and could barely and only occasionally hit the sandy bottom with their feet. After a few minutes, it was clear to the woman that they were all trapped in a terrible whirlpool.

    Then scores of tourists were walking to them, hand in hand, forming a line. Soon the first person held the woman's hand. In turn, her husband and the two boys joined her. The long line moved slowly until they were back to the safety of the beach.

    The rescuers call it the Human Chain. But it was the deeply “human” aspect of the rescuers' cooperation（合作）that made it so astonishing and successful.

    Robots make me nervous — especially the ones which seem to think for themselves. I was embarrassed to admit this till I heard that Bill Gates, the founder of Microsoft, felt the same way.

Gates said in an interview with the social networking and news website Reddit: "I am in the camp that is concerned about super intelligence. First the machines will do a lot of jobs for us and not be super intelligent. That should be positive if we manage well. A few decades after that though the intelligence is strong enough to be a concern."

    Well, maybe I don't have to worry about my computer and kitchen equipment yet. After I use them I can always pull the plug. But in the future, machines might find a way to prevent us from switching them off. There's a terrible thought!

    Maybe the problem with computers too clever for us is not that they are evil like some we've seen in sci-fi movies. What could put us in danger is that they might be too efficient. That's what philosopher Nick Bostrom from Oxford University believes. He says that machines are indifferent to humans and in pursuit of their own goals, the destruction of people might be just additional damage. Bostrom gives us an example: A machine which might have as its only goal to produce as many paperclips as possible might look at human bodies as extra material for paperclips and go after you. Because it is, well, a machine, it would not take pity on you.

    It's a good thing that American writer Isaac Asimov thought about how far robots can go and left us his three rules of robotics. They state that a robot may not hurt a human being or allow the human being to come to harm.

I'm glad my machines at home are "dumb". All my cleaner wants to take over is the carpet in my living room. Let's hope they don't create an appliance which wants to take over the world!

    Why can some people sleep through noises like a honking car or flushing toilet, while others are awakened by the lightest sound?

    To find the answer, sleep researchers at Massachusetts General Hospital conducted an unusual study of 12 self-described deep sleepers. After tests confirmed that the healthy volunteers were solid sleepers, they took part in a three-night study in the university's sleep laboratory. The participants spent the night in a big and comfortable room. But the room also included four speakers positioned near the top of the bed.

    During the night, the deep sleepers were subjected to 14 different recorded sounds, like street traffic, toilets flushing, and an airplane flying overhead. Next door, the researchers monitored their sleep patterns and brain waves.

    As expected, all of the participants slept relatively well, but there were differences in how they responded to the noisy interruptions. Some of the sleepers didn't wake up even when a sound was blasted at 70 decibels（分贝）; others were awakened by sounds at 40 or 50 decibels.

    The researchers discovered that the difference in a sleeper's reaction to noise could be predicted by the level of brain activity called "sleep spindles（纺锤体）". A sleep spindle is a burst of high-frequency brain activity coming from deep inside the brain during sleep. The source of the spindles is the thalamus（丘脑）, a part of the brain that sends sensory information to the rest of the cortex（皮层）.

    Before the study, the Massachusetts researchers theorized that the spindles are the brain's way of preventing sensory information from passing through the thalamus and waking the rest of the brain during sleep. They found that sleepers who experienced the most sleep spindles during the night were also the soundest sleepers and were least likely to be awakened by noise.

    Scientists already know that most people become lighter sleepers with age, most likely because older people experience less "slow wave sleep", which is the deepest stage of sleep. People also produce fewer sleep spindles as they age. But even when controlling for the stage of sleep a person was in, the number of sleep spindles still predicted their risk for awakening because of noise.

    More research is needed, but the findings suggest that a better understanding of sleep spindles could lead to new behavioral or drug therapies for people with sleep disorders. For example, future studies may try to determine whether diet, exercise or other behaviors may influence the number of sleep spindles a person produces during the night.

    Allegra Ford Thomas Scholarship

    $2,500 awards available:1

    The Allegra Ford Thomas Scholarship is a $2,500 one-time scholarship. Applicants must:

    Be a graduating high school senior with a documented learning disability who will be enrolled (招收) in a two-year community college, a training program, or a specialized program for students with learning disability in the fall；

    Demonstrate (证明) financial need;

    Provide most current documentation of an identified learning disability (Please note: attention-deficit (注意力缺乏症)/ hyperactivity disorder (多动症) alone is not considered to be a learning disability; candidates with AD/ HD must also provide documentation of a specific learning disability);

    Be a United States citizen.

    Contact: afscholarship@ncld.org            Tel:646-616-1211

    Marion Huber Learning Through Listening® (LTL) Scholarship

    $6,000 or $2,000 awards available: 6

    The awards are presented to those who are high school seniors with learning disabilities, in recognition of academic achievement, outstanding leadership, and service to others. The awards are given to six students who are chosen by a selection committee every year. The three top winners will get $6,000 each and the other three winners $2,000 each.

    Contact: naa@learningally.org         Tel: 800-241-4792

    Joe Hornsby Ⅲ Scholarship

    $2,000  awards available: 4

    The scholarship will focus specifically on students who have special needs because of physical disabilities and want to further their education at a college/ university or trade school. Applicants must:

    Be a graduating senior of a high school in Mesquite Independent School District;

    Be planning to attend or be enrolled in an undergraduate program at a college, university or technical training program;

    Have had at least a "C" average during high school (2.0 GPA)

    Contact: scholarship@dallasfoundation.org     Tel: 214-741-9683

    WSAJ Past Presidents. Scholarship

    7,500 awards available: 2

    Applicants must be high school seniors who have a history of achievement despite having been a victim of injury or overcoming a disability or similar challenge, and a documented need for financial assistance. They must also have a record of commitment to helping people in need or protecting the rights of injured persons and a plan to apply their education toward helping people. The scholarship is only open to students of Washington.

    Contact: anta@washingtonjustice.org          Tel: 214-741-9863