Polar bears are one of the most popular animals for people. Polar bears are different from every other bear in the world. This is because polar bears have white fur. However, there are many facts about polar bears that people might not be aware of .

    The skin of polar bears is black, which according to thinkquest.org allows them to absorb more heat from the sun. Polar bear fur is transparent , because it is made up of hollow guard hairs. Loc.gov explains that the reason polar bears display white fur is that when the sun hits the fur ,the hollow spaces in the hair scatter the light. Since none of the light is absorbed, the light reflected back appears white to human eyes.

    Polar bears' conservation status is considered close to extinction. Global warming is considered the main cause of the decline in polar population. Polar bears use ice floats to hunt for their food. However, these ice floats are melting so polar bears are starting to drown in the search for food, and the food is becoming more difficult to get. Contrary to popular belief, polar bears do not eat penguins, because polar bears are not found in the Antarctic region of the world. Polar bears are only found around the Arctic Circle. Polar bears do not drink water. They get all the water they need from the prey they eat.

    FES. Gov specifies that polar bears are considered the largest land carnivores(食肉动物) in the world. The polar bear weight ranges between 700--1,500 pounds. Since the polar bear habitat is melting away, their main evolutionary advantages are fading. Polar bears are not able to use their camouflage(伪装) to find prey in habitats not covered with snow. Polar bears do not hibernate(冬眠). However, when the weather gets uncomfortable, or mothers give birth, polar bears will dig themselves a hidden home.

    What can we do to help save the polar bears? We can donate to organizations like the World Wildlife Fund, reduce our carbon footprint, and send letters to politicians explaining to them that we need to set up more preserves to help save the polar bear habitat.

    Shakespeare's Birthplace and Exhibition

    Henley Street, Strafford-Upon-Auon   Tel: 01789 204016

    Shakespeare's Birthplace Was the childhood home of William Shakespeare. Take a step back in time and see what life was like for the young Shakespeare growing up in Stratford-Upon-Avon. The house has been exactly furnished, and includes both original and copy items similar to those which would have been there in the house when Shakespeare was a boy. Beautiful painted cloths hang on the walls, brightly colored fabrics fill the rooms and his father's glove workshop has been recreated. At the back of the house is a beautiful garden containing many plants，herbs and flowers mentioned in Shakespeare's plays.

    The neighboring exhibition shows Shakespeare's life and focuses on many rare local items connected with him, as well as a copy of the first edition of his collected plays published in 1623.

    Limited disabled access

    Many restaurants close to Shakespeare's Birthplace

    Town center parking

    Gift shop

    Allow at least 45 minutes to visit the house and the exhibition

    If Frida Kahlo（1907-1954） is today one of the best-known and most popular figures of 20th-century, Mexican art, it is undoubtedly because of her personality and the originality（独创性）of a body of works. Her work is, above all, the expression of a real life－a tragic and stormy life, one that challenged all conventions. The mere mention of her name excites enthusiasm and admiration, but her work is rarely exhibited, and has not been shown in France for fifteen years. The selection to go on show at the Musee de L'Orangerie includes major works by the artist, with masterpieces from the Museo Dolores Olmedo.

    The life and work of Frida Kahlo cannot be separated from those of her companion Diego Rivera（1886-1957）. Together they became figures of legend, and both have a place in the pantheon of 20th-century Mexican artists. Famous for his large wall paintings, Rivera's easel paintings, drawings and prints, which form a large part of his artistic production, are less well-known to the public in Europe. The exhibition aims to trace his artistic career from the early Cubist images, revealing his links with the Paris artists whose works are a key element in the Orangerie collections, to the paintings that established him as the founder of the 20th-century school of Mexican art. His travels throughout Europe influenced his vision and his skills without ever distancing him from his roots, thus confirming his place in history as the founder of the nationalist school.

    The exhibition devoted to the legendary couple Diego Rivera and Frida Kahlo presents their works together, as if to confirm the impossibility of their divorce that was in fact finalized（定下来）but reconsidered after just one year apart. It also gives us a better view of their respective artistic worlds, so different and yet so complementary（互补的）, through the deep-rooted attachment they shared to their country.

    On the way to my company, I was driving behind a small truck. I was a few minutes late and watching the two men ahead of me talking in that slow truck made me angry.

    The light turned green, but the truck was still moving very slowly. I became impatient, so I turned right to go past it. Suddenly, a new blue Chevy Silverado was rushing by. I tried to stop, but my car hit the side of the Chevy.

    "Pow!" I heard a big noise and then I realized that an accident happened. For a moment, just a moment... I asked if I was OK, and honestly, I was waiting for people to come over and help me. Those thoughts didn't last long, as the answer came into my mind that the air bag had saved me. Luckily, I was still alive.

    Slowly I opened the door. The warm, bright morning sunlight hit my face and I felt better. I saw the Chevy Silverado and I ran over to check if the driver in it was injured. "Are you OK？"I shouted loudly through the window. His head was down, eyes closed, and he didn't answer me.

    At that moment, I thought I was looking at a dead man. Full of fear, I shouted again, and knocked at the window heavily once more. His eyes started to open, and he slowly shook his head, "Yes."

    Once again, I said to myself, "How lucky I am!"

Time Travel

    If you could travel in time, where would you go? Perhaps you would watch an original performance of a Shakespeare's play in Elizabethan England? What about hanging out with Laozi in the Spring and Autumn Period? Or maybe you'd voyage far ahead of the present day to see what the future holds.

    The possibility of time travel is indeed appealing. Stories exploring the subject have been around for hundreds of years. Perhaps the best known example is science fiction novel. The Time Machine, which was written by H.G. Wells and published in 1895 for the first time. It was adapted into at least two feature films of the same name, as well as two television versions, and a large number of comic book adaptations. It is generally credited with the popularization of the concept of time travel using a vehicle that allows an operator to travel purposefully and selectively. The term "time machine", coined by Wells, is now universally used to refer to a vehicle transporting people into the far future.

    But could time travel actually be possible? Some scientists say yes, in theory. They propose using cracks in time and space called “wormholes”, which could be used as shortcuts to other periods. Einstein's theory of relativity allows time travel in extreme circumstances. And British physicist Stephen Hawking says you could travel into the future with a really fast spaceship going at nearly the speed of light. Though building such a spaceship would of course be no simple task.

    Even if you could travel into the past, there is something called the “grandfather paradox”. It asks what would happen if a time traveler were to go back in time and have his own grandfather killed for some reason, and therefore prevent himself from being born. If the time traveler wasn't born, how would he travel back in time?

    And would you really like to visit the future? In H.G. Wells' book, the main character travels into distant time where he arrives at a beach and is attacked by giant crabs. He then voyages 30 million years into the future where the only living thing is a black object with tentacles(触角).

    If that's what's in store, maybe we are better just living in the present day after all.

    Jon Hoffman was sitting at a red light when he saw a man run out of a store carrying a plastic donation jar full of cash. The Plano, Texas, detective, dressed in plain clothes but wearing his badge (徽章) and gun, caught the man and pinned him to the hood of his car. But Hoffman had trouble containing the thief, and they got into a struggle.

    "The detective has a martial arts background, and he said he thought the suspect must have a martial arts background, too, because he was able to break away so easily," a Plano police spokesperson said.

    The detective called out for help as a crowd gathered. Among those watching: Andre Harvey and Kirby Sample, two day laborers. Harvey did what has become common these days—he took out his phone and hit record. "I hate to say it, but I thought that this policeman was doing something illegal," Harvey said. "But when he asked for help, I thought, well, there won't be a shooting if I get over there in time.” Harvey jumped into action—while he was still recording the video—as did Sample.

    "Harvey caught hold of the suspect's arms, while Kirby seized his legs, and they were able to get the suspect to the ground to help Detective Hoffman put the handcuffs (手铐) on," said the police spokesperson. The 27-year-old suspect was charged with resisting arrest and other offenses. The charity jar he stole held less than $ 50.

    "I've been on the wrong side of the law several times in my life," Harvey told WFAA. "It feels good to be on the right side and do something positive."

    After the arrest, the three men got to know each other over steaks and ribs at a local steak house—Hoffman's treat, as a thank-you. But the rescuers say Hoffman deserves credit too. "It could have turned real ugly." Sample told the media "He handled himself like a real professional."