Mark Twain, the famous American writer and a great master of humor, liked to play jokes on others. But once a joke was played on him. One day Mark Twain was invited to give a talk in a small town. At lunch he met a young man, one of his friends.

    The young man said that he had an uncle with him. He told Mark Twain that his uncle never laughed or smiled, and that nobody and nothing was able to make his uncle smile or laugh.

    "You bring your uncle to my talk this evening," said Mark Twain. "I'm sure I can make him laugh."

    That evening the young man and his uncle sat in the front. Mark Twain began to speak. He told several funny stories and made everyone in the room laugh. But the man never even smiled. Mark Twain told more funny stories, but the old man still kept quiet. Mark Twain continued to tell his funny stories. Finally he stopped. He was tired and quite disappointed.

    Some days later, Mark Twain told another friend what had happened." Oh," said his friend, "I know that man. He's been deaf for years."

    My son Cameron who was 16 years old came up with this crazy idea to make his own survival show. Well I thought it was just another one of his “phases” but he began to sound more and more serious about it. He's a big outdoors man and has always loved the idea of surviving in the woods by himself, but he has never done anything like this. Anyway, he somehow raised $4,000 for his idea. With the money he bought a nice camcorder(摄像机) ;that's when I realized that he was really serious about this whole thing.

    Cameron organized the trip all by himself. I just put out a few rules that he had to follow and rented a satellite phone so that he could contact us on his journey. My son traveled nearly 50 miles, while surviving for four days and three nights alone in the wilderness. He had no food or water, only his knife, and a camera. The journey was difficult as he traveled through valleys, up and down big waterfalls, all while he was filming his entire journey. The wilderness we dropped him off in was a wild forest that is made up of untouched land; he found his way to the beautiful lake where we picked him up. In the end he made the most amazing movie that I have ever seen in all my life.

    My son's courage should be recognized. That is why I am trying my hardest to get him seen by the rest of the world. Cameron recently turned 17. He already has plans for his next adventure and I have no hope in stopping him from completing it. This next summer he plans on surviving for two or three weeks on a desert island in Fiji or Tonga. No teenage kid has ever done anything close to what my son Cameron has done.

    There is a lake near a forest in Sweden. The water in lake is very clear and everything is quiet and still. On the far side of the water is some farmlands and further away, across the fields, is an old church built on a hill. It has just stopped raining. The brook flowing into the lake is full and there is still some half-melted snow from last winter on the ground.

    The reason the water is so clear and everything is so quiet and still, is that most of the plant and animal life in and around the lake is died. There are no birds because all the fish and insects, which the birds need for food, have disappeared. Many trees in the forest are losing their leaves and bark, and are sick and dying. Others were blown down by the high winds of last winter. A farmer is working in a field planting something, but unless he plants a stronger kind of seed this year, the crop will be between 25 to 40 percent lower than a few years ago. The stones of the old church tower are turning to power and unless the tower is repaired soon, it will fall down.

    The smoke coming out of factories and poisonous gases from cars and trucks causes all the death and destruction in this place. And yet this silent lake is hundreds of kilometers away from the nearest factory and highways.

    Known for its historic stone paths and traffic-jammed streets, France forgoes（放弃）traditional bricks and pavement for shiny solar panels（嵌板）with its new roadway project. French officials announced plans to construct a 1,000-kilometer-long solar roadway, with each kilometer capable of providing enough cheap, renewable energy to power 5,000 homes.

    “The maximum effect of the program, if successful, could be to furnish 5 million people with electricity, or about 8 percent of the French population,” Segolence Royal, France's minister of ecology and energy, said at a conference, reports Global Construction Review.

The street — or “Wattway”—was made possible through the cooperation between the National Institute of Solar Energy and French civil engineering firm Colas. Tests for the road will begin in the spring. The entire project will take an estimated five years to complete, but builders won't have to destroy existing roads in the meantime. Only about a quarter of an inch thick, the solar panels can simply be glued on top of existing streets and are durable（耐用的）enough to bear heavy traffic and weather conditions.

    Despite the bad traffic Parisians associate with their journey to work every day, the average French roadway is packed for only 10 percent of the day, according to Colas' figures. That will leave the solar street with the majority of the day to gather energy from the sun, which makes the project quite promising. The panels collect solar power through a thin layer of polycrystalline silicon（多晶硅）and change it into electricity. Electrical connections can be put into existing traffic structures.

    France won't be the first country to roll out a solar road. A 70-meter solar bike path was set up in the Netherlands in 2014. Within six months, the path had created enough to power a house for an entire year.

    In recent years I have had two very good roles on television: Florence, the wisecracking maid on the series The Jeffersons, and Mary, the mother who holds things together on 227. But 17 years ago, in 1972 when I was just getting started in theater work, I thought I'd never make it as an actress. For that matter, I couldn't even hold my life together or afford a home of my own.

    Back then I had about as much self-confidence as a chicken in a fox's nest. I was recovering from surgery and had been off work for six months from my job as a United Airlines reservations agent. I'd had some bit parts in local theater groups, but those came and went, not leading to anything bigger.

    Worse, as a single mother with three youngsters, I had no place to live. My children were staying with their father while I recovered in an aunt's apartment. Lying in bed, staring hopelessly at the wall, I didn't know what to do or where to turn.

    Then one Sunday morning I aimlessly turned on the television set, and there were actor Robert Young and his wife talking about their faith. I sat right up in bed. They said, "When one door closes, a better one opens," Well, I wasn't going to just sit staring at the closed one. So I got up and trudged (跋涉) on. Even if my shoes wore out, I decided, my faith wouldn't.

    Later, when I began filling small parts in television productions, that self-confidence showed. I'd always done my best to play the role as I thought the director wanted, but now I found myself freer to interpret it, I was more natural, more me.

    The light from the campfire brightened the darkness, but it could not prevent the damp cold of Dennis's Swamp (沼泽地) creeping into their bones. It was a strange place. Martin and Tom wished that they had not accepted Jack's dare. They liked camping, but not near this swamp.

    "So," Martin asked as they sat watching the hot coals. "How did this place get its name?"

    "Are you sure you want to hear it? It's a scary story," warned Jack.

    "Of course!" cried out Tom. "If there were anything to be scared of, you wouldn't have chosen this place!"

    "Ok, but don't say I didn't warn you," said Jack, and he began this tale.

    "Way back in time, a man called Dennis tried to start a farm here. He built that cottage over there to live in. In those days, the area looked quite different—it was covered with tall trees and the swamp was a crystal-clear river. After three hard years, Dennis had cleared several fields and planted crops. He was so proud of his success that he refused to listen to advice.

    "'You are clearing too much land,' warned one old man. 'The land is a living thing. It will hit back at you if you abuse it. '"

    "'Silly fool,' said Dennis to himself. 'If I clear more land, I can grow more crops. I'll become wealthier. He's just jealous!'"

    "Dennis continued to chop down trees. Small animals that relied on them for food and shelter were destroyed. He was so eager to expand his farm that he did not notice the river flowing slowly towards his door. He did not notice salt seeping to the surface of the land. He did not notice swamp plants choking all the native plants."

    "What happened?" Martin asked. It was growing colder. He trembled, twisting his body closer to the fire.

    "The land hit back—just as the old man warned," Jack shrugged. "Dennis disappeared. Old folks around here believe that swamp plants moved up from the river and dragged him underwater. His body was never found."

    "What a stupid story," laughed Tom. "Plants can't …" Before he had finished speaking, he screamed and fainted (晕倒). The other two boys jumped up with fright, staring at Tom. Suddenly, they burst out laughing. Some green swamp ivy (常春藤) had covered Tom's face. It was a while before Tom could appreciate the joke.