For many parents, raising a teenager is like fighting a long war, but years go by without any clear winner. Like a border conflict between neighboring countries, the parent-teen war is about boundaries: Where is the line between what I control and what you do?

    Both sides want peace, but neither feels it has any power to stop the conflict. In part, this is because neither is willing to admit any responsibility for starting it. From the parents “point of view, the only cause of their fight is their adolescents” complete unreasonableness. And of course, the teens see it in exactly the same way, except oppositely. Both feel trapped.

    In this article, I'll describe three no-win situations that commonly arise between teens and parents and then suggest some ways out of the trap. The first no-win situation is quarrels over unimportant things. Examples include the color of the teen's hair, the cleanliness of the bedroom, the preferred style of clothing, the child's failure to eat a good breakfast before school, or his tendency to sleep until noon on the weekends. Second, blaming. The goal of a blaming battle is to make the other admit that his bad attitude is the reason why everything goes wrong. Third, needing to be right. It doesn't matter what the topic is - politics, the laws of physics, or the proper way to break an egg - the point of these arguments is to prove that you are right and other person is wrong, for both wish to be considered an authority - someone who actually knows something - and therefore to command respect. Unfortunately, as long as parents and teens continue to assume that they know more than the other, they'll continue to fight these battles forever and never make any real progress.

    Red meat, usually considered to be beef, pork, mutton and lamb products, have nutritional value, but eating red meat also raises some health concerns.

    Red meat is an excellent source of protein(蛋白质). It is also a key source of vitamin B12, which is only available in animal products and is key for both red blood cell and nerve health. Red meat is also a rich source of zine, selenium(硒) andiron. Zinc and selenium are good for our immune system (免疫系统). Iron helps transport oxygen in the blood, and low levels of iron can lead to feeling tired. Eating red meat, especially lean cuts(廋肉), with meals and snacks, may help people curb hunger between meals and help people with weight management.

    Health risks of red meat may include the risk of heart disease and cancer. It is usually best to avoid processed meats. These tend to contain lots of salt and nitrites(亚硝酸盐), which may damage our health. Choosing lean cuts and cooking meat correctly may reduce health risks. It is generally advised not to undercook or overcook red meat and to avoid grilling(烧烤).

    When it comes to red meat and health, another thing is whether the animals are grain or grass-fed. Grass-fed animals frequently have a better quality of life. Grass feeding can be more environmentally friendly as well.

    Many governments suggest the amount of red meat should be safely included in a healthy diet. The amount varies between nations, but several portions a week are usually acceptable. Those who choose to include eating red meat may wish to choose grass-fed animals and to cut off any fat before eating.

Azores Destination Guide

    The Azores is a region of Portugal that's made up of nine volcanic islands in the North Atlantic Ocean. Compared to many island destinations, the Azores isn't touristy, noisy, or polluted. Instead, travelers can expect to discover untouched nature, fantastic views, and charming villages with rich cultural traditions. Here are the key details you should know to begin planning your trip to the Azores.

    Must-See Attractions

    Nature lovers will be thrilled to discover all of the outdoor trips available to them in the Azores, This is a main spot for hiking, diving, fishing, and whale watching. Some of the top outdoor sights to see include the calderas of Lagoa das Sete Cidades and Lagoa das Fumas and Pico Island, where you can climb the tallest mountain in Portugal. Sao Miguel is the biggest and most populated island, and there are lots of historic homes, restaurants, hotels, and shops here.

    If You Have Time

    Try to visit the Pori of Angra in Terceira, which is a World Heritage Site and close to the hundreds of traditional bullfights that are held every summer. Head to the most westerly island of Flores to see the beautiful coast lined with wildflowers and sheep.

    Free Things to Do

    Visit the beach to take a dip in the comfortable 70-degree water

    Take the five-hour trek lo the peak of volcanic Mount Pico

    Go bird-watching to see some of the Azores 300+ species of birds

    Take a walk around the 15th century town of Heroismo to learn about local history

    Transportation

    The best way to get around the Azores is by car, and there are some really scenic drives to experience here. Buses operate around the islands, but service can be infrequent and unavailable on Sundays and holidays. Cycling should only be attempted if you are in great shape because the terrain is rugged and steep. It's especially enjoyable to take boat to get from island to island, since most towns have ports and are along the shoreline.

        Let us all raise a glass to AlphaGo and the advance of artificial intelligence. AlphaGo, DeepMind's Go-playing AI, just defeated the best Go-playing human, Lee Sedol. But as we drink to its success. We should also begin trying to understand what it means for the future.

    The number of possible moves in a game of Go is so huge that in order to win against a player like Lee. AlphaGo was designed to adopt a human—like style of gameplay by using a relatively recent development--deep learning. Deep learning uses large data sets, “machine learning” algorithms （计算程序） and deep neural networks to teach the AI how to perform a particular set of tasks. Rather than programming complex Go rules and strategies into AlphaGo, DeepMind designers taught AlphaGo to play the game by feeding it data based on typical Go moves. Then, AlphaGo played against itself, tirelessly learning from its own mistakes and improving its gameplay over time. The results speak for themselves.

    Deep learning represents a shift in the relationship humans have with their technological creations. It results in AI that displays surprising and unpredictable behaviour. Commenting after his first loss, Lee described being shocked by an unconventional move he claimed no human would ever have made. Demis Hassabis. one of DeepMind's founders, echoed this comment：“We're very pleased that AlphaGo played some quite surprising and beautiful moves.”

    Unpredictability and surprises are—or can be—a good thing. They can indicate that a system is working well, perhaps better than the humans that came before it. Such is the case with AlphaGo. However, unpredictability also indicates a loss of human control. That Hassabis is surprised at his creation's behaviour suggests a lack of control in the design. And though some loss of control might be fine in the context of a game such as Go, it raises urgent questions elsewhere.

    How much and what kind of control should we give up to AI machines? How should we design appropriate human control into AI that requires us to give up some of that very control? Is there some AI that we should just not develop if it means any loss of human control? How much of a say should corporations, governments, experts or citizens have in these matters? These important questions, and many others like them, have emerged in response, but remain unanswered. They require human, not human - like, solutions.

    So as we drink to the milestone in AI, let's also drink to the understanding that the time to answer deeply human questions about deep learning and AI is now.

    There was once a man who had a donkey and a beautiful lapdog. The donkey was kept in a barn and had plenty of corn and hay to eat. Indeed, he was just as lucky as any donkey could be. The little dog stayed in the house and was well liked by the master. He was always playing and jumping about in an funny way and was allowed  to lie in his master's lap (膝盖). Meanwhile, the donkey had plenty to do. He pulled wood all day long and had to take his turn at the mill during the night. He often complained about his problems, and it bored him to see the lapdog living such an easy life, while he had to work so hard. Finally he thought to himself that if he acted the same way as the lapdog to his master, he would be treated the same way. So, one day he ran out of his barn and went fast into the house, where he began to kick about in a very strange way. Then, swaying his tail and imitating the funny behavior of the pet lapdog, he knocked over the table where his master was eating. He also broke all the dishes into very small pieces and did not stop until he jumped onto his master, trying to lick and paw him with his rough feet.

    Seeing their master in great danger, the servants thought it was time to help him. They beat the foolish donkey with sticks until he could not get up again. As he was about to die, he cried, "Why couldn't I have remained satisfied the way I was? Why did I try to imitate a creature who was nothing but a lazy puppy after all?"