The vast majority of people can buy pretty much anything they need. Not anything they want, necessarily, but anything they need to achieve a satisfactory degree of creature comfort: clothing, water, shoes and food.

    During my childhood, a Michael Pollan book would have been the prize of my year, were I to find it waiting under my Christmas tree or open it upon my birthday. I also used to be thrilled at receiving necessary things, like simple socks or gloves, as present. Nowadays I have too many gloves. I purchase leather gloves online that appear to be a good deal or just because I like their look.

    Prosperity (富足) is a good thing, right? Yes, of course. But for me, I find that the greater ease with which such a generous gift is purchased, the less significance it has when given. This is why I try harder at gifts.

    My first line of dealing with this problem is simply understanding the effect of a little time spent. Even writing out a thoughtful or funny card goes a lot further than a “cute top” purchased from a popular shopping website.

    Need help? Go to your printer. There's paper in there. Fold one sheet in half and draw a heart on the front. Open it up and fill the card with a poem or a few words of your own. Not only is it obvious that you took the time to select your words and write them down, but now you force the reader to stop for a short time and consider what you were trying to accomplish with them. The effort made by the two of you is the gift.

    No matter how you decide to spend a little more time on your giving, the point is just quite simply that you do. You don't have to give a person a handmade paper boat to get a reaction. But you won't be sorry if you do.

    Wild mangoes come from the foothills of the Himalayas. They are by far the most important fruit in India, and have been cultivated there for four thousand years. The arrival of the mango tree in other parts of the world was probably due to the Portuguese who carried mangoes via Goa to Africa, from where they eventually reached the New World. Mango trees are now so well established in many tropical countries that it might appear that they have always been there.

    Like many tropical trees, the mango tree is multi-purpose product. Its wood is used in boat building, and its leaves can be fed to cattle. Most of the mango crop is consumed in the areas where it is grown, but in recent years mangoes have gained in popularity across the world as people in mild climate become increasingly eager to enjoy the delight of the fresh fruit.

    The global market for mangoes is very profitable, and mango producers are keen to make use of the fruit's growing popularity. Modern shoppers not only appreciate the fruit's high nutritional value(the mango is a good source of vitamin A and C, protein and fibre), but also expect it to look and taste perfect. Therefore producers now select only the best quality seedlings which have the most chance of developing into good quality fruit.

    Mangoes are high in fiber, thus making them very good for the heart. The high fiber content is also helps easing constipation. They have high pectin(果胶) and vitamin C content that reduces the blood cholesterol levels and serves as an immune booster. This fruit is rich in anti-oxidants, vitamins, minerals and contain an enzyme(酶) that has stomach soothing properties. These enzymes act as a digestive aid and digestive proteins.

    Although the mango tree has spread from its native Himalayan foothills to the tropics, delivering the fresh fruit to the world's supermarkets presents a challenge, as it does not travel well. Producers transport the fruit by speedy but costly air freight (货运)for minimum delay rather than risk the cheaper but slower road or shipping routes which, can result in damage to the fruit.

    Mangoes are usually in storage for some time after their arrival at their destination. The fruit must be kept cold, or the sweet, juicy flesh will soon become over ripe and the mangoes will be unfit for sale. Fortunately, extremely effective refrigeration is now available and this is the best way of preventing the fruit from going bad before it reaches the supermarket shelves.

    Blue Note Jazz Festival 2018

    Jul 1-30, 2018

    Location:

    Several locations in New York

    The Blue Note Jazz Festival in New York City is the city's most popular jazz festival and focuses on bringing big-name artists to small crowds and up-and-coming acts to the public. The event takes over 15 places across the city and includes 150 world-class performers. Past artists include Questlove, Michael Bolton and Aretha Franklin.

    Grant Park Music Festival 2018

    Jun 14-Aug 19, 2018

    Location:

    Jay Pritzker Pavilion, South Shore Cultural Center, & Harris Theater for Music and Dance | 201 East Randolph Street, Chicago, Illinois

    Listening to classical music is said to improve your intelligence. Whether that's true or not, the Grant Park Music Festival will provide you with free, classical music, and you'd be smart to attend. The music at these concerts will leave you begging for more. It's free to attend, so come and enjoy some great music with your family and friends.

    Lake Park Friends Wonderful Wednesdays 2018

    Jun 21 – Jun 26, 2018

    Location:

    Lake Park | Milwaukee, Wisconsin

    Energy is way too contained(被抑制的)in an indoor music venue(场所). Let that energy go where it wants through a series of outdoor concerts with Lake Park Friends Wonderful Wednesdays. Wednesday is no longer the most boring day of the week. This time, there's something fun to do. A list of live music acts has made the middle of the week something too look forward to.

    YouthCUE Festival of Youth Choirs(合唱队)2018

    Aug 10- Aug 22 2018

    Location:

    Washing to National Cathedral | 3101 Wisconsin Ave NW Washing ton, DC

    YouthCUE Festival of Youth Choirs in Washington gives students the rare opportunity to perform in the Washington National Cathedral, a famous historic place. The festival is a showcase of student choirs from all over the country, accompanied(伴奏)by musicians from the local professional orchestra(管弦乐队).

    Are some people born clever, and others born stupid? Or is intelligence developed by our environment and our experiences? Strangely enough, the answer to both these questions is yes. To some extent our intelligence is given to us at birth, and no amount of special education can make a genius out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings. Thus the limits of a person's intelligence are fixed at birth, but whether or not he reaches those limits will depend on his environment. This view, now held by most experts, can be supported in a number of ways.

    It is easy to show that intelligence is to some extent something we are born with. The closer the blood relationship between two people, the closer they are likely to be in intelligence. Thus if we take two unrelated people at random (随机地) from the population, it is likely that their degrees of intelligence will be completely different. I f on the other hand we take two identical (完全相同的) twins they will very likely be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depends on birth.

    Imagine now that we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring. We would soon find differences in intelligence developing, and this indicates that environment as well as birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all, are likely to have similar degrees of intelligence.

    The vast majority of green sea turtles in the northern Great Barrier Reef are female because of warmer temperatures due to climate change, which influences their sex, researchers said. Scientists are concerned populations of these animals could turn almost completely female.

    A recent study by the National Oceanic and Atmospheric Administration, California State University and Worldwide Fund for Nature Australia examined two genetically distinct populations of green sea turtles living in the Great Barrier Reef. The study found that a group of about 200,000 turtles living in the northern part of the reef was almost entirely female. While the southern population was 65 to 69 percent female, females in the northern group accounted for 99.1 percent of young turtles and 86.8 percent of adults.

    After combining their results with temperature data, the scientists found that most sea turtle populations are living above the most suitable temperature. The northern green turtles have been producing mainly females for more than two decades and that the complete feminization of this population is possible in the near future, making it clear that climate change is threatening the survival of these populations.

    Dermot O'Gorman, the chief executive of World Wildlife Fund Australia, said, “That's a very visible sign of the impact of climate change. But this is a quiet change.”

    O'Gorman said more urgent action on climate change is clearly needed, adding that some conservationists have already taken practical measures, such as using shade cloth on turtle nesting beaches to lower the sand temperature, and reducing by catch in the fishing industry.

    “Shade cloth can be used in certain places, but there's a limit to the scale you can do that,” he said, “Now every large male who can reproduce is going to be even more important.”

    Most people feel lonely sometimes, but it usually lasts only between a few minutes and a few hours. This kind of loneliness is not serious. In fact, it is quite normal. For some people, though, loneliness can last for years. Now researchers say there are three different types of loneliness.

    The first kind of loneliness is temporary. This is the most common type. It usually disappears quickly and does not require any special attention. The second kind, situational loneliness, is a natural result of a particular situation－for example, the death of a loved one, or moving to a new place. Although this kind of loneliness can cause physical problems, such as headaches and sleeplessness, it usually does not last for more than a year.

    The third kind of loneliness is the most severe. Unlike the second type, chronic(长期的) loneliness usually lasts more than two years and has no specific cause. People who experience habitual loneliness have problem socializing and becoming close to others unfortunately, many chronically lonely people think there is little or nothing they can do to improve their condition.

    Many researchers agree that the loneliest people are between the ages 18 and 25, so a group of psychologists decided to study a group of college students. They found that more than 50% of the students were situationally lonely at the beginning of the term as a result of their new circumstances, but had adjusted after a few months, 13% were still lonely after seven months due to shyness and fear. They felt very uncomfortable meeting strangers, even though they understood that their fear was not reasonable. The situationally lonely students overcame their loneliness by making new friends, but the chronically lonely remained unhappy because they were afraid to do so.

    Psychologists are trying to find ways to help habitually lonely people for two reasons: they are unhappy and unable to socialize and there is a connection between chronic loneliness and serious illness such as heart disease. While temporary and situational loneliness can be a normal, healthy part of life, chronic loneliness can be a very sad, and sometimes dangerous condition.