Recently my husband had his Achilles tendon（跟腱） cut when feeding a chicken. When sitting in the doctor's office waiting for surgery stressfully, I decided to treat myself for a minute and start to read about “The Little House on the Prairie”. Suddenly I felt my life seemed like a slack（懈怠） compared to the Ingalls who do all their washing and cooking but they feel so happy. Their every happiness is created from the work with their own hands. Yet I'm walking around feeling sorry for myself because I'm picking up the slack! So I'm thinking “Work it out! Get up and get busy.”

    It really is true. I realize that I'm happiest when accomplishing tangible(有形的) productive work—working in the yard and washing my dishes—brings me happiness. This does not surprise Kelly Lambert Ph.D. She has been researching the phenomenon she calls “effort-rewards”. When you do meaningful work with your hands, a kind of neurochemical feedback floods your brain with dopamine and serotonin. These happy brain chemicals are natural antidepressants, and we've evolved to release them both to reward ourselves for working with our hands and to motivate ourselves to do it some more. Dr. Lambert says Americans have become more depressed in recent years and at the same time we've experienced a decrease in purposeful physical activity. Did we lose something vital to our mental health when we started pushing buttons instead of ploughing the fields?

    Dr. Pansinski says she gets that happy look when she prepares a meal at the end of a day. “We are programmed to reward ourselves when we accomplish things with our hands. For so many people, it just feels as though everything's going so fast—life, kids, hundreds of e-mails a day. There is so little you can really see and hold on to. Working with one's hands is a way to slow down, to take pleasure in life again.”

    In England, we look forward to our birthdays for 364 days a year! We invite special people to celebrate it with us.

    The Presents

    Presents are opened as soon as the children are awake. They can't wait for the birthday cake later in the day!

    The Cards

    Friends and family send birthday cards. Sending birthday cards is a custom that began in England about 100 years ago.

    The Party

    The birthday child will have a party to which friends and family are invited. Visitors to the party bring presents for the birthday child. The children play games such as Musical Chairs and Pass the Parcel.

    The Cake

    The birthday cake is decorated on a theme(主题). A candle for each year is lit and placed on top and the child blows out the candles making a wish. We don't put objects inside the cake as shown on many websites.

    The Bumps

    It used to be traditional for the birthday child to have the bumps. Friends would hold the child by the child by the legs and under the arms and lift the child up and down bumping them gently on the ground. The number of bumps given is the age of the child plus one for extra good luck. As this can be dangerous, clapping is often done instead.

    The Sweets

    Some children do take sweets into school to share with their classmates on their birthdays.

    As sea levels climb, even Washington, D. C. could see more frequent and widespread flooding at high tide.

    Strong storms and high winds sometimes bring floods to coastal areas. But cities and towns along the US East Coast are flooding even in calm and sunny weather. Among them is Maryland's capital Annapolis. Tourists there must sometimes walk through water flooding downtown streets surrounding the habor. Sometimes water covers roads in Atlantic City, N. J. Even the yards and basements of coastal homes near New York City sometimes flood.

All are suffering from this trend—normal high tides surpass (超过) a rising sea level.

    Sea levels have climbed, on average, about 20 centimeters (8 inches) over the past 135 years. And a sharp increase in tide flooding is one of the more visible impacts affecting many coastal areas, notes William Sweet, an oceanographer.

    Sweet and his co-workers recently analyzed data from 45 tide gauges (计量表) along the US coasts. These tools record the changing heights of tides as they rise and fall. From these data, Sweet's team calculated the number of : “troublesome floods” in various coastal cities. These floods, Sweet explains, typically occur when water level is about 30 centimeters (1foot) above the historic level of the highest tides. In June 2014, the team reported finding a growing rise in these flooding events.

    In Charleston, S.C. from 1957 to 1963, the city experienced troublesome floods an average of 4. 6 days per year. Bur from 2007 to 2013, the occurring rate of troublesome floods jumped five times. Annapolis city was even more serious. From1957 to 1963，troublesome floods were roughly 3. 8 days per year. From 2007 to 2013, the average was 10 times higher- 39. 3days a year.

    “Over the next few decades, climate change probably drives sea levels even higher,” Sweet says. “So today's flooding problems promise to become only more widespread and frequent.”

    Entrepreneur and CEO of Tesla and Space X, Eldon Musk may have a little more time on his hands, as he's leaving his position on the board of the Open Al, according to a blog post.

    The departure is likely the result of Tesla's moving into the field of Artificial Intelligence(AI)，which he said in 2017 would be the “best in the world”and would even be able to “predict your destination, ”Musk will continue to “donate and advise the organization,” Open AI said in a blog post on Feb. 20, adding that “As Tesla continues to become more focused on AI, this will avoid a potential future conflict for Eldon.

    Musk and Y Combiner CEO Sam Altman co-founded the nonprofit enterprise in December2015, its mission is to develop safe artificial general intelligence and ensure those developments are made public. Open AI researchers published a paper on the site ArXiv, org, detailing the possible secure threats that come with“malicious”AI. In fact, Musk has heard the “evil AI”alarm several times, On Aug.11，2017, he warned that artificial intelligence poses a bigger threat to humanity, and he told a gathering of state governors that the government needs to regulate Al before robots start “killing people. ”

    Musk's departure from the Open AI board could mean big things for Tesla. As Eton Goodbye, a financial reporter, noted on Futurism, the move “could signal that Tesla is more deeply committed to their own AI projects than we thought. ”He added, “Those who have had their ears to any rumors (谣言)that Tesla is ready to deliver vehicles capable of Level 5autonomy could take this new Open Al development as a sign that the company is inching closer to that unapproachable goal, ”No company has reached that level of autonomy, which means that a driverless car could navigate any road under any conditions and that all the human “driver” would need to do is to input a destination.

    Rome, Paris and New York are the world's top fashion cities, all of which have produced some of the top trends, from fashionable skirts to the hottest new shoes. But have you ever wondered about the negative ideas that they have enforced?

    In April 2016, the Advertising Standards Authority (ASA) in Britain banned an ad from Gucci that featured models dancing around and having fun, because they were all extremely skinny. Banning ads due to the models' extreme figures isn't new. The ASA banned an ad in 2015 for the same reason. In France, it has been ruled that models are to provide a doctor's no providing that they are at a healthy weight.

    So what is the healthy weight for models? Twenty years ago, the average fashion model weighed 8% less than the average woman. Today, they weigh 23 less.

    People may think that being at an unhealthy weight will help them gain the benefits that the models do. This provides a standard of beauty, and therefore people who want to achieve those things may attempt to obtain them through unhealthy ways. People may think that they are overweight, due to the images of models' thin figures. They see something wrong with their bodies whether they are overweight or not. This is a key factor in a lowered body image, low self-esteem, depression and possibly even eating disorders.

    I'm not blaming the fashion industry by any means. It's not their fault that many people look up to the models and expect to live a life like theirs. I am glad that the ASA is raising its voices when discussing the growing issue of body images in the fashion industry. By banning photos and videos, speaking out against them and pushing for doctor's notes from the models, it's pushing for the ideas that the traditional fashion industry's body image demands should be changed and something more needs to be questioned.

    Humans and many other mammals have unusually efficient internal temperature regulating systems that automatically maintain stable core body temperatures（核心体温）in cold winters and warm summers. In addition, people have developed cultural patterns and technologies that help them adjust to extremes of temperature and humidity（湿度）.

    In very cold climates, there is a constant danger of developing hypothermia（低体温）, which is a life threatening drop in core body temperature to below normal levels. The normal temperature for humans is about 37.0℃. However, differences in persons and even the time of day can cause it to be as much as 6℃ higher or lower in healthy individuals. It is also normal for core body temperature to be lower in elderly people. Hypothermia begins to occur when the core body temperature drops to 34.4℃. Below 29.4℃, the body cools more rapidly because its natural temperature regulating system usually fails. The rapid decline in core body temperature is likely to result in death. However, there have been rare cases in which people have been saved after their temperatures had dropped to 13.9—15.6℃. This happened in 1999 to a Swedish woman who was trapped under an ice sheet in freezing water for 80 minutes. She was found unconscious, not breathing, and her heart had stopped beating, yet she was eventually saved despite the fact that her temperature had dropped to 13.7℃.

    In extremely hot climates or as a result of uncontrollable infections, core body temperatures can rise to equally dangerous levels. This is hyperthermia. Life threatening hyperthermia typically starts in humans when their temperatures rise to 40.6—41.7℃. Only a few days at this extraordinarily high temperature level is likely to result in the worsening of internal organs and death.