Back in 2003 an 86-year-old man drove his Buick through a crowded farmers' market. Nine people were killed. More than fifty-four people were hurt, fourteen with serious injuries. When he finally stopped, the 86-year-old man got out his car and screamed at people to get out of the way. No alcohol or drugs were found in his system. Apparently, he was just old and confused.

    This is a frightening accident, and it is not a rare one. There are many examples of elderly drivers driving into swimming pools, houses, storefronts, or worse.

    In our teenage years, we all heard “driving is not a right; it's a privilege.” That is still true, and there comes an age when driving is no longer a privilege that can be allowed. After a certain age, eyesight and dementia(痴呆) are very serious concerns. Undoubtedly, these age-related problems affect some older adults' driving ability. By the time a person is between eighty-five and ninety years old, his or her driving privilege should be examined.

    Licensing laws vary greatly from state to state, and it's time for a national law on the maximum age limit for driving. The motivation for this law is safety. Another option is to start with laws that ban anyone over the age of eighty-five from driving after sundown, because driving conditions are not as safe as daylight hours. Still another option that may allow elderly drivers to continue driving could be new technology like a voice warning system that cautions drivers on busy streets or at traffic lights. Finally, since there are laws against driving under the influence of alcohol and drugs, shouldn't some prescription drugs also be included? The average age of 85-year-old is undoubtedly taking at least one prescription drug daily.

    The thought of an 86-year-old driver with failing eyesight running down the road in a two-ton piece of metal is unsettling to us all. Driving at an advanced age is not only challenging for the elderly drivers, but also it's dangerous for the rest of us.

    The Parthenon(帕特农神庙) in Athens is a building with a long and complex(复杂的) history. Built nearly 2,500 years ago as a temple celebrating the Greek goddess Athena, it was for thousands of years the church of the Virgin Mary of the Athenians, then a mosque (清真寺), and finally a ruin. The building was changed and the sculptures(塑像) much damaged over the centuries. By 1800 only about half of the original sculptural decoration remained.

    Between 1801 and 1805, Lord Elgin, the British ambassador to the Ottoman Empire(奥斯曼帝国), which controlled Athens, acting with the full knowledge and permission of the Ottoman authorities，removed about half of the remaining sculptures from the fallen ruins and from the building itself. Lord Elgin loved Greek history and transported the sculptures back to Britain. The arrival of the sculptures in London had a huge effect on the European public, greatly increasing interest in ancient Greek culture and influencing contemporary artistic trends. These sculptures were gained from Lord Elgin by the British Museum in 1816 and since then they have all been on show to the public, free of charge.

    Since the early 1980s, however, the Greek government has argued for the return of all the Parthenon sculptures in the British Museum. They have also challenged the British Museum Board of Trustees' legal title to the sculptures.

    The British Museum, however, insists that it exists to tell the story of cultural achievement throughout the world, from the dawn of human history over two million years ago until the present day. The museum considers itself an important resource for the world: the breadth and depth of its collection allows the world public to re-examine cultural identities and explore the complex network of interconnected world cultures.

    It also says that, within the context of this unparalleled collection, the Parthenon sculptures are an important representation of ancient Athenian civilization. Each year millions of visitors admire the artistry of the sculptures and gain insights on how ancient Greece influenced — and was influenced by — the other civilizations that it came across.

When milk arrived on the doorstep

    When I was a boy growing up in New Jersey in the 1960s, we had a milkman delivering milk to our doorstep. His name was Mr. Basille. He wore a white cap and drove a white truck. As a 5-year-old boy, I couldn't take my eyes off the coin changer fixed to his belt. He noticed this one day during a delivery and gave me a quarter out of his coin changer.

    Of course, he delivered more than milk. There was cheese, eggs and so on. If we needed to change our order, my mother would pen a note-“Please add a bottle of buttermilk next delivery”-and place it in the box along with the empty bottles. And then, the buttermilk would magically appear.

    All of this was about more than convenience. There existed a close relationship between families and their milkmen. Mr. Basille even had a key to our house, for those times when it was so cold outside that we put the box indoors, so that the milk wouldn't freeze. And I remember Mr. Basille from time to time taking a break at our kitchen table, having a cup of tea and telling stories about his delivery.

    There is sadly no home milk delivery today. Big companies allowed the production of cheaper milk, thus making it difficult for milkmen to compete. Besides, milk is for sale everywhere, and it may just not have been practical to have a delivery service.

    Recently, an old milk box in the countryside I saw brought back my childhood memories. I took it home and planted it on the back porch （门廊）. Every so often my son's friends will ask what it is. So I start telling stories of my boyhood, and of the milkman who brought us friendship along with his milk.

    Closeness and independence are both important in our life. Though all humans need both of them, women tend to focus on the first and men on the second. It is as if their lifeblood ran in different directions.

    These differences can give women and men differing views of the same situation, as they did in the case of couple I will call Tracy and Brian. When Brian's old high school friend called him at work and announced he'd be in town on business the following month, Brian invited him to stay for the weekend. That evening he informed Tracy that they were going to have a houseguest, and that he and his friend would go out together the first night to chat like old times. Tracy was upset. She was going to be away on business the week before, and the Friday night when Brian would be out with his friend would be her first night home. But what upset her the most was that Brian had made these plans on his own and informed her of them, rather then discussing them with her before extending the invitation.

    Tracy would never make plans, for a weekend or an evening, without first checking with Brian. She can't understand why he doesn't show her the same courtesy and consideration that she shows him. But when she protests, Brian says, "I can't say to my friend, 'I have to ask my wife for permission'!"

    To Brian, checking with his wife means seeking permission, which implies that he is not independent, not free to act on his own. To Tracy, checking with her husband makes her feel good to know and show that she is involved with someone, that her life is bound up with someone else's.

    Tracy and Brian both felt upset by this incident because it cut to the core of their primary concerns. Tracy was hurt because she sensed a failure of closeness in their relationship: He didn't care about her as much as she cared about him. And he was hurt because he felt she was trying to control him and limit his freedom.

The Coolest Inventions

    An Oceans Vacuum(吸尘器)

    There's a collection of plastic trash in the middle of the Pacific Ocean. It's bigger than Texas and growing. The way to clean it up now is to catch it with nets. That is both costly and slow. Instead, the Ocean Cleanup Project proposes a 62-mile-long floating barrier that would use natural currents to trap trash. If next year's trials succeed, a full cleanup operation would aim to start in 2020. It could reduce the trash by 42 % over 10 years.

    Easy-On Shoes

    In 2012, Matthew Walzer, a high school student with a disability, sent a note to Nike. "My dream is to go to college," he wrote, "without having to worry about someone coming to tie my shoes every day." Nike assigned a design team to the challenge. This year, they came out with their solution: the FlyEase. The basketball shoe can be fastened with one hand. A pair of Nike FlyEase shoes sells for $ 130.

    An Airport for Drones (无人机)

    As Amazon, Google, and others get ready for drone delivery service, there is one big question: What kinds of home bases will their drones have? Rwanda, in Africa, may have the answer. There, workers will soon start work on three "drone ports". The goal is to make it easier to transport food, medical supplies, electronics, and other goods through the hilly countryside. Construction is set to be completed in 2020.

The ancient Egyptians thought so little of the brain that when a king died, they removed the brain from his body and threw it away. The Egyptians assumed, like many people before and after them, that consciousness — your mind and your thoughts existed in the heart.

Now we know that the mind is a product of the brain, but how exactly does this 1.5-kilo piece of matter create a mind that allows you to think about yourself, experience happiness and anger, or remember events that happened 20 minutes or 20 years ago? This isn't a new question. Today, however, powerful new techniques for visualizing the sources of thought, emotion, behavior, and memory are transforming the way we understand the brain and the mind it creates.

Have you ever stopped and thought, "What's wrong with me today? I just don't feel like myself"? Perhaps you were more tired or worried than usual — but somehow, you knew that something was different about you. This self-awareness - the ability to think about yourself and how you're feeling-is an important part of being human.

This part of of your mind has its origins in the prefrontal cortex — a region of your brain just behind your forehead that extends to about your ears. Before this area began to function (around age two), you didn't understand that you were a separate individual with your own identity. As this part of your brain developed, you became more aware of yourself and your thoughts and feelings.

Though humans may share certain emotions and recognize them in others, we don't all have the same emotional response to every situation. In fact, most emotional responses are learned and stored in our memories. The smell of freshly cut grass, for example, will generate happy feelings in someone who spent enjoyable childhood summers in the countryside, but not in someone who was forced to work long hours on a farm. Once an emotional association like this is made, it is very difficult to reverse it. "Emotion is the least flexible part of the brain," says psychologist Paul Ekman. But we can learn to control our emotions by becoming consciously aware of their underlying causes and by not reacting automatically to things in our environment.

For centuries, people have studied the brain, but it is only in recent years that we have really started to learn how it works. Nevertheless, there is still a long way to go before we understand our mind's many complexities.