Even at school there had been an unhealthy competition between George and Richard.

    “I'll be the first millionaire in Clifford!” Richard Pike used to say.

    “And you'll sorry you knew me,” George would reply “because I'll be the best lawyer in town!”

    George never did become a lawyer and Richard Pike never made any money. Instead both men opened bookshops on opposite sides of Clifford High Street. It was hard to make money from books, which made the competition between them worse.

    Now with only one bookshop in town, business was better for George. But sometimes he sat in his narrow, old kitchen and gazed out of the dirty window, thinking about his former rival(竞争对手). Perhaps he missed him?

    George was very interested in old dictionaries. He had recently found a collector in Australia who was selling a rare first edition. When the parcel arrived, the book was in perfect condition and George was delighted. But while he was having lunch, George glanced at the photo in the newspaper that the book had been wrapped in. He was surprised—the smiling face was older than he remembered but unmistakable! Trembling, George started reading.

    “Bookends have bought ten bookstores from their rivals Dylan. The company, owned by multi-millionaire Richard Pike, is now the largest bookseller in Australia.”

    For most of us Veterans Day just means a chance to enjoy an extra day off from school or work．However this November 11th，be sure to spend a few minutes on its true purpose，by acknowledging（感谢）the men and women who have served in our armed forces．

    And you don't have to stop at just this one day．Join the over 10，000youth members of the Young Marines group that honor these brave men and women all year long with special events and completely spoil them for an entire week，from November 4th to 11th，by visiting hospitalized veterans，performing chores for disabled veterans and even organizing community－wide social event．The program open to kids ranging from the age of eight all the way to high school，is a great way to not only show your appreciation，but also get a chance to do some fun activities with like－minded kids and make a real difference in a veteran's life．

    People often believe that Memorial Day and Veterans Day are celebrated for the same reason．There is however a subtle but important difference between the two．While both honor our military personnel，the former is a day to remember and pay respect to all the men and women that died serving our country in a war，while Veterans Day is to celebrate the soldiers who are still alive and served in the forces at any time，during peace or war． Though several other countries celebrate this day in honor of their own veterans，the meaning is slightly different for each one．Some like the United Kingdom，celebrate it in honor of all soldiers－living or dead，while others like Canada celebrate it to honor all living veterans．They also call it different names．France and New Zealand sill call it Armistice Day．In the United Kingdom，Australia and Canada it is referred to as Remembrance Day，while Malta and South Africa celebrate it as Poppy Day．

    No matter what it is called，the reason for observing the day is the same－to show our appreciation to the brave men and women who sacrifice（牺牲）everything to make this world a safer place for the rest of us．

    By now, you've probably been warned that a robot is coming for your job. But rather than repeat the warning, I've decided to throw down a challenge: man against machine.

    Start with the task we're doing right now: communicating in fluent human. We're sharing abstract ideas through words that we choose with an understanding of their slight difference and impact. We don't just speak in human; we speak as humans. A robot who says that science is fun is delivering a line (念一句话). A human who says that science is fun is telling you something important about being alive.

    Here's another inbuilt advantage we take for granted: as humans we are limited by design. We are bound in time: we die. We are bound in space: we can't be in more than one place at a time. That means when I speak to an audience, I am giving them something special. It's a custom-made, one-off, 100% robot-free delivery, from today's one-and-only Australian Chief Scientist.

    True, I now come in digital versions, through Twitter and Facebook and other platforms, but the availability of those tools hasn't stopped people from inviting me to speak in person. Digital Alan seems to increase the appetite for human Alan, just as Spotify (a digital music service) can increase the demand for a musician's live performances.

    Thanks to technology, many goods and services are cheaper, better and more accessible than ever before. We like our mass-produced bread, and our on-tap lectures and our automated FitBit advice. But automation hasn't killed the artisan bakery (面包店). Online courses haven't killed the booming, alongside their machine equivalents.

    Here's a third argument for the win. We humans have learned the habit of civilization. Let me explain this point by a story. A few years go, some researchers set out to study the way the people interact with robots. They sent out a small robot to patrol (巡逻) the local mall. That robot had a terrible time, and the villains of the story were children. They kicked him, bullied him, and smacked (掌击) him in the head.

    The point is not that the children were violent. The point is that the adults were not. They restrained whatever primitive impulse (冲动) they might have felt in childhood to smack something smaller and weaker in the head, because they had absorbed the habit of living together. We call it civilization. If we want artificial intelligence for the people, we'll need every bit of that civilizing instinct.

    Together, these points suggest to me that humanity has a powerful competitive edge. We can coexist with our increasingly capable machines and we can make space for the full breadth of human talents to flourish.

    Since 50 years ago, scientists have been searching for ways to link the brain with computers. Brain Computer Interface (BCI) technology could help people with disabilities send commands to machines.

    Recently, two researchers, Jose Millan and Michelle Tavella from the Federal Polytechnic School in Lausanne, Switzerland, demonstrated (展示) a small robotic wheelchair directed by a person's thoughts.

    In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right hand. He could even talk as he watched the vehicle and guided it with his thoughts.

    "Our brain has billions of nerve cells. These send signals through the spinal cord (脊髓) to the muscles to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles," Tavella says, "Our system allows disabled people to communicate with external world and also to control devices."

    The researchers designed a special cap for the user. This head cover picks up the signals from the scalp (头皮) and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.

    Prof. Millan, the team leader, says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. "The practical possibilities that BCI technology offers to disabled people can be grouped in two categories: communication, and controlling devices. One example is this wheelchair." He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can benefit from. And the other is to guarantee that they can use the technology over long periods of time.

Not long after Tony Berlin began working at the state driver's license facility in Niles in 1985, he noticed that some truck drivers who should have failed their exams mysteriously passed them. For six years, starting in 1992, he collected evidence to show why: He believed truck drivers were bribing state workers to get licenses. In another turn of the screw, the workers were using those bribes to buy tickets to the then secretary of state George Ryan's fundraisers, including for his successful bid for governor. Berlin tried to expose the corruption (腐败)-he went to the FBI and the upper ranks of the secretary of state's office - but was repeatedly met with indifference. Then he began to suspect that the truck driver in a 1994 accident that killed six children, all from the same family, got his license through the scheme. In a moment that changed everything, Berlin reached out to the Reverend Scott Willis, the children's father.

It was his call to Willis that connected the crash to what would become known as the licenses — for — bribes scandal (丑闻), "Berlin's the one who started it says the Willises' lawyer. A few months after that phone call, the U.S. attorney's office initiated Operation Safe Road, an ongoing federal investigation that by the end of November had disclosed 34 offenses.

The investigation ultimately netted 75 offenses, including that of Dean Bauer, Ryan's inspector general. He pleaded guilty in 2001 to obstructing (妨碍)justice and was sentenced to 12 months in. prison. Bui the biggest catch was Ryan himself, who was sentenced in 2006 to six and a half years tor fraud and blackmailing. As for Berlin, he continued to work a stale license facilities, in Streator and Pontiac, choosing to stay out of the public eye.

I was asked by a reader recently why so many animals seem to have pink ears，when their bodies are all different colours? The truth is that most animals actually don't have pink ears. Let us explain.

Near the equator (赤道), where the climate is hot, animals are likely to have darker skin, including on their ears. Think of the African elephant, which has quite dark ears. In colder climates, skin colour is usually lighter and often pink.

Why is skin colour different in different climates? Skin pigmentation, which is what gives skin its colour, can protect against sunburn and skin cancer. When animals live in colder parts of the world, they don't need it as much to survive. Light-coloured skin also helps animals stay warmer because it reduces heat loss, which is useful if you're in a colder climate.

For most animals, the colour of their fur or other body covering has generally developed as camouflage. That allows animals to mix into the background and avoid being eaten, or for predators (捕食者) to remain hidden during hunting. One example is the sandy-coloured coat of the desert fennec fox, which uses camouflage for both hunting and hiding.

By the way, in many animals, ears come in many different shapes and sizes. For example, in bats, the serval (a type of African wildcat) and the fennec fox, the ears are large compared to their body size—this helps them hear better because it allows them to sense more sound waves. Naked mole-rats have tiny ears because they need to dig a lot. Big ears would get in the way. The other downside of big ears is that you can lose a lot of body heat. That's why animals that live in really cold places, like the Arctic fox, have quite small ears.