Living in the wild can be hard. Finding food and staying safe aren't easy. Each day, animals struggle to survive in their habitats. Not all animals get by on their own. Some animals form a close partnership with other kinds of animals. These pairings are called symbiotic (共生的) relationships.

    In a symbiotic relationship, the animals depend on each other. One animal helps the other meet its needs. Sounds good, right? Not always. Some animals are not very kind to their partners. In some cases, one animal meets its needs but hurts its partner. Take ticks, for example. These insects suck blood to live. To get blood, they attach themselves to other kinds of animals. Ticks can pass germs that cause disease instead of helping their hosts.

    In other relationships, animals don't treat their partners so poorly Both animals benefit from living with the other animal.

    Small animals called cleaner shrimps have found a way of helping fish at coral reefs. As their name suggests, the shrimps clean the fish. They hang out at what scientists call a cleaning station. A fish stops by. Then a shrimp climbs onto the fish and even steps into the fish's mouth. The shrimp uses its tiny claws to pick stuff off the fish's body. That can include dead skin, tiny pieces of food, and wee creatures that can hurt the fish. The fish gets a nice cleaning. The shrimp enjoys a tasty meal offish trash.

    Small birds called plovers are also in the cleaning business. They have big customers—crocodiles. Crocs have long snouts（鼻子）filled with sharp teeth, Cleaning them is tricky. When a croc opens its mouth, the plover hops right in. The croc does not snap its snout shut. Instead, it lets the plover eat small, harmful animals attached to its teeth. The plover gets an easy meal while the croc gets clean teeth.

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    Suddenly another thought went through Kate's mind like an electric shock. An express train was due to go past about thirty minutes later. If it were not stopped, that long train, full of passengers, would fall into the stream. “Someone must go to the station and warn the station-master，” Kate thought. But who was to go? She would have to go herself. There was no one else.

    In wind and rain she started on her difficult way. Soon she was at the bridge that crossed the Des Moines River, a bridge also built of wood, just like the bridge across Honey Creek. The storm had not washed this away, but there was no footpath across it. She would have to cross it by stepping from sleeper (枕木)to sleeper. With great care she began the dangerous crossing, sometimes on her hands and knees, hardly daring to look down between the sleepers into the wild flood waters below. If she should slip, she would fall between the sleepers, into the rapidly flowing stream.

At last -- she never knew how long it had taken her一 she felt solid ground under her feet. But there was no time to rest. She still had to run more than half a mile and had only a few minutes left. Unless she reached the station before the express did, many, many lives would be lost.

    She did reach the station just as the train came into sight. Fortunately the station-master was standing outside. “The bridge is down! Stop the train! Oh, please stop it!” Kate shouted breathlessly.

    The station-master went pale. He rushed into the station building and came back with a signal light. He waved the red light as the train came into the station. It was not a second too early.

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    Most people agree that honesty is a good thing. But does Mother Nature agree? Animals can't talk, but can they lie in other ways? Can they lie with their bodies and behavior? Animal experts may not call it lying, but they do agree that many animals, from birds to chimpanzees, behave dishonestly to fool other animals. Why? Dishonesty often helps them survive.

    Many kinds of birds are very successful at fooling other animals. For example, a bird called the plover sometimes pretends to be hurt in order to protect its young. When a predator（猎食动物）gets close to its nest, the plover leads the predator away from the nest. How? It pretends to have a broken wing. The predator follows the "hurt" adult, leaving the baby birds safe in the nest.

    Another kind of bird, the scrub jay, buries its food so it always has something to eat. Scrub jays are also thieves. They watch where others bury their food and steal it. But clever scrub jays seem to know when a thief is watching them. So they go back later, unbury the food, and bury it again somewhere else.

    Birds called cuckoos have found a way to have babies without doing much work. How? They don't make nests. Instead, they get into other birds' nests secretly. Then they lay their eggs and fly away. When the baby birds come out, their adoptive parents feed them.

    Chimpanzees, or chimps, can also be sneaky. After a fight, the losing chimp will give its hand to the other. When the winning chimp puts out its hand, too, the chimps are friendly again. But an animal expert once saw a losing chimp take the winner's hand and start fighting again.

    Chimps are sneaky in other ways, too. When chimps find food that they love, such as bananas, it is natural for them to cry out. Then other chimps come running. But some clever chimps learn to cry very softly when they find food. That way, other chimps don't hear them,  and they don't need to share their food.

    As children, many of us learn the saying "You can't fool Mother Nature." But maybe you can't trust her, either.

    A couple near Pittsburgh finally removed an alarm clock from inside their walls. It had been stuck there for more than ten years.

    Every night between 6:50 and 7:50, the alarm clock stuck in the living room wall rang. Sylvia and Jerry Lynn heard the alarm ring at the same time every evening for 13 years. And they finally had the clock removed after their story gained national attention.

    Keith Andreen and Dawn Michelucci work for Low-Cost Heating and Air Conditioning. They came to get the clock out of the wall through the couple's garage.

    “This is the first time that I had to remove a clock from inside a wall,” Andreen told CBS Pittsburgh.

    Jerry accidentally dropped the clock down an air vent (通风口) while making home repairs in 2004. The couple expected the clock to die after a few months. However, its battery remained undamaged even as it was pulled from the wall. Jerry said they finally got used to the nightly alarm and even considered it “kind of cute”. So he chose to leave it in the wall as a conversation starter. “You're sitting around playing cards and it goes off,” he told Inside Edition. “Is that an alarm clock? Why is the alarm clock going off? It's in the wall.”

    After 13 years, Jerry said the clock looked almost exactly how he remembered it when he dropped it in the wall. “It is a travel alarm clock,” he said. The couple plans to keep their nightly routine going by placing the clock in their room and keeping the alarm set for 7:50 p.m.

    “An apple a day keeps the doctor away.” Similarly, if we drink a little more water every day, we may find that we need to go to the doctor a lot less often. A healthy diet is made up of water and a great many different kinds of foods. We know that healthy foods like fruits, vegetables and fish, are important as they provide us with energy and fiber, without giving us too much fat and sugar. But why is water important?

    The human body needs water to survive. Water is important as it carries poisons and waste out of our bodies. However, doctors advise us to drink plenty of water, much more than the small amount we need to stay alive.

    Some doctors believe that water is important for our health in all kinds of ways. They believe that a great many illnesses and health problems start as a result of dehydration(脱水)—a lack of water in the body. Most people are dehydrated at least some of time, although they probably don't know it. It is surprising to learn that if we feel thirsty, we are already in the first stage of dehydration. In fact, we are advised to drink water before we feel thirsty.

    These doctors think that health problems such as headaches, high blood pressure and asthma(哮喘) could be helped if people drink more water. They also believe that drinking more water can help people who are overweight. Water contains no calories so it will not make us put on weight. If we drink water, we will probably drink less sugary soft drinks such as Coca-cola. Doctors also believe that drinking more water may stop people from overeating. They say that many people think that they are hungry when they are, in fact, thirsty. Doctors suggest, therefore, that we eat less food and drink more water. There are still many health problems that cannot be solved by drinking water, so we should not stop going to seeing the doctor completely. However, if we make a decision to drink water every day, we may find that we need to go to the doctor a lot less often.

    Oil Painting Workshop

    Jan. 7, 2019

    For Ages 15 and Up

    Beginners Welcome! Experience Not Required!

    Registration (登记) Deadline —— Dec. 31, 2018

    Class Schedule

    9:30—10:00 am            Welcome and Registration

    10:00—12:00 am          Painting Session

    12:00 am—1:00 pm        Lunch

    1:00—3:00 pm            Painting Session

    3:00pm                    Evaluation and Departure

    Instructor

    Judy Moore Gist, Alexander Certified Instructor and Ross Certified Instructor, is making great efforts to give people of all ages the opportunity to experience Alexander's The Magic of Oil Painting and Bob Ross's The Joy of Painting. Both, William Alexander and Bob Ross, PBS TV hosts, have inspired thousands of first-time painters. The “wet-on-wet” technique have encouraged people of all ages to pick up a brush and put their dreams on canvas (油画布). Judy will do the same, and you are welcome to take a class and see for yourself. At the end of just one session you will be amazed at the beautiful painting that you create in just a few hours. You will become more aware of beautiful cloud shapes and colours you ignored before. There is nothing more inspiring than seeing the beautiful scenery that you paint and others will treasure forever.

    For more information about Judy Moore Gist, click here.

    Cost

    $75.00/a person. Prices include all instructor fees, materials, and lunch.

    If you wish to pay by check, please print the OilPaintJan.pdf printable registration form and mail it in with payment to: Holiday Lake 4H Educational Center, 12674-H Camp Road, Appomattox, VA 24522.

    Refund(退款) Policy

    Full Refund: Dec. 31, 2018

    Nonrefundable: after Dec. 31, 2018

    For more information, contact Heathern Benninghove at 232-268-6777 or heathern@vt.edu.