If you could be anybody in the world, who would it be? Your neighbour or a super star? A few people have experienced what it might be like to step into the skin of another person, thanks to an unusual virtual reality（虚拟现实）device. Rikke Wahl, an actress, model and artist, was one of the participants in a body swapping experiment at the Be Another lab, a project developed by a group of artists based in Barcelona. She swapped with her partner, an actor, using a machine called The Machine to Be Another and temporarily became a man. "As I looked down, I saw my whole body as a man, dressed in my partner's pants," she said. "That's the picture I remember best."

    The set-up is relatively simple. Both users wear a virtual reality headset with a camera on the top. The video from each camera is sent to the other person, so what you see is the exact view of your partner. If she moves her arm, you see it. If you move your arm, she sees it.

    To get used to seeing another person's body without actually having control of it, participants start by raising their arms and legs very slowly, so that the other can follow along. Eventually, this kind of slow synchronised（同步的）movement becomes comfortable, and participants really start to feel as though they are living in another person's body.

    Using such technology promises to alter people's behaviour afterwards-potentially for the better. Studies have shown that virtual reality can be effective in fighting racism-the bias（偏见）that humans have against those who don't look or sound like them. Researchers at the University of Barcelona gave people a questionnaire called the Implicit Association Test, which measures the strength of people's associations between, for instance, black people and adjectives such as good, bad, athletic or awkward. Then they asked them to control the body of a dark skinned digital character using virtual reality glasses, before taking the test again. This time, the participants' bias scores were lower. The idea is that once you've "put yourself in another's shoes" you're less likely to think ill of them, because your brain has internalised the feeling of being that person.

    The creators of The Machine to Be Another hope to achieve a similar result. "At the end of body swapping, people feel like holding each other in their arms," says Arthur Pointeau, a programmer with the project. "It's a really nice way to have this kind of experience. I would really, really recommend it to everyone."

    Cuyahoga Valley National Park Volunteer Program

    Building a Community of Park Stewards

    Position Title: Wildlife Volunteer – Butterfly Monitors (2 positions)

    Dates: Mid May to September, 2018

    Hours: 8 ~ 16 hours / week

    Location: Cuyahoga Valley National Park

    Duties: Park staff will train volunteers in butterfly identification and data recording for one week before volunteers work in team of two to help track butterfly monitoring areas. Butterfly monitoring areas are 1 ~ 2 miles in length and are walked one time per week. There are a total of three butterfly monitoring areas within the park. Butterflies are identified by using binoculars （望远镜） or by netting and releasing. Data is recorded on data sheets.

    Skills Required: Applicants must have self motivation and desire to work with others. Volunteers will work during days when temperature is 70 degrees or more, between 10:30 am and 5 pm. Ability to walk a long distance in hot and humid conditions is needed. Skills with basic butterfly identification are not a must but helpful.

    Requirements: Applicants must complete a National Park Service Agreement and have their backgrounds looked into. U. S. citizenship is required. Applicants must be current Kent State University students.

    How to Apply: Please request an application from Mike Johnson at gkovach@kent.edu and send it back to Mike Johnson at gkovach@kent.edu, with the above position title as the subject, by February 15, 2018. If offered an interview, please come to Cuyahoga Valley National Park with your personal resume introducing your education and your previous work experience.

    For further information, please call Jamie Walters at (330) 657-2142 or email jwalters@forcvnp.org.

    An earthquake is one of the most common natural disasters. It may cause great damage.  So it is wise to learn some simple safety tips to protect yourself or your family members.

    Fragile items, like those made of glass should usually be placed on a lower surface, near the ground instead of placing them on cupboards higher up. Never place them near your bed, sofas and other furniture where you would be sitting or lying down. When there is a strong movement, these pieces will fall on the floor directly and not on you.

    There is a strong chance of short circuits（短路）and fire breakouts during an earthquake. Make sure you turn off electrical connections and gas immediately when an earthquake happens.

    During an earthquake, lie beneath an object that is not easily damaged. Do not go near objects that could directly fall on you. Never use the elevator to go down. Stay inside until the shaking stops and it is safe to go outside. Research has shown that most injuries happen when people inside buildings try to go out. Use the staircases at all times.

    If you are outdoors, do not take shelter under a tree, streetlights, electric poles or tall buildings. If you are driving, stop your car and stay in a safe place. Do not park your car under a tree or any tall object.

    If trapped in debris (瓦砾堆), cover your mouth with a handkerchief or clothing. Tap on a pipe or wall so rescuers can find you. Use a whistle (哨子) if one is available. Never shout for help. Shouting can cause you to breathe in dangerous amounts of dust. Do not light a match because you may burn yourself. Do not move about or kick up dust.

    One day, Mr. Arnold was teaching a lesson, and things were going as normally as ever. He was explaining the story of human being to his pupils. He told them that, in the beginning, men were nomads (游牧); they never stayed in the same place for very long. Instead, they would travel about, here and there, in search of food, wherever it was to be found. And when the food ran out, they would move off somewhere else.

    He taught them about the invention of farming and keeping animals. This was an important discovery, because by learning to cultivate (耕作) the land, and care for animals, mankind would always have food steadily. It also meant that people could remain living in one place, and this made it easier to set about tasks that would take a long while to finish, like building towns, cities, and all that were in them. All the children were listening attracted by this story, until Lucy jumped up:

    “And if that was so important and improved everything so much, why are we nomads all over again, Mr. Arnold?”

    Mr. Arnold didn't know what to say. Lucy was a very clever girl. He knew that she lived with her parents in a house, so she must know that her family were not nomads; so what did she mean?

    “We have all become nomads again,” continued Lucy, “The other day, outside the city, they were cutting the forest down. A while ago a fisherman told me how they fish. It's the same with everyone: when there's no more forest left the foresters go elsewhere, and when the fish run out the fishermen move on. That's what the nomads did, isn't it?

    The teacher nodded, thoughtfully. Really, Lucy was right. Mankind had turned into nomads. Instead of looking after the land in a way that we could be sure it would keep supplying our needs, we kept developing it until the land was bare. And then off we would go to the next place! The class spent the rest of the afternoon talking about what they could do to show how to be more civilized (文明的).

    The next day everyone attended class wearing a green T-shirt, with a message that said “I am not a nomad!”

    And, from then on, they set about showing that indeed they were not. Every time they knew they needed something, they made sure that they would get it using care and control. If they needed wood or paper, they would make sure that they got the recycled kind. They ordered their fish from fish farms, making sure that the fish they received were not too young and too small. They only used animals that were well cared for, and brought up on farms.

    And so, from their little town, those children managed to give up being nomads again, just as prehistoric men had done, so many thousands of years ago.

    The Frick Collection (5th Avenue and E. 70th Street)

    Many art lovers would rather visit this small art gallery than any other in New York. Henry Clay Frick, a rich New Yorker, died in 1919, leaving his house, furniture and art collections to American people. Frick had a preference for pre­twentieth century Western paintings, and these are well­represented in this excellent collection. You can also explore Frick's beautiful house and garden which are well worth a visit

    Guggenheim Museum (5th Avenue and 88th Street)

    This museum owns 5,000 excellent modern paintings, sculptures and drawings. These art works are not all displayed at the same time. The exhibition is always changing. It will appeal to those who love Impressionist and Post­Impressionist paintings. The Guggenheim Museum building is also world­famous. The best way to see the paintings is to start from the top floor and walk down to the bottom. There are no stairs, just a circular(环形的) path.

    Metropolitan Museum of Art (5th Avenue and 82nd Street)

    The reputation of this museum lies in the variety of its art collection. This covers more than 5,000 years of civilization from many parts of the world. The museum displays more than just the visual delights of art. It introduces you in ancient ways of living. You can visit an Egyptian temple, a fragrant Ming garden, a typical room in an 18th century French house and many other special exhibitions.

    Whitney Museum of American Art (945 Madsion Avenue, near 75th Street)

    The Whitney holds an excellent collection or contemporary American paintings and sculptures. There are no permanent displays in this museum and exhibitions change all the time. Every two years, the Whitney holds a special exhibition of new art by living artists. The museum also shows videos and films by contemporary video artists.

    If you are worried about the planet, please make sure your rubbish is buried under the ground.

    People talk about "reduce, reuse, recycle." It sounds like a good idea. There is a problem, though. Recycling costs too much money.

    Even the U.S. Environmental Protection Agency (EPA) says it only makes sense economically and environmentally to recycle about 35 percent of disabled (废弃的) materials. Among those materials are paper and aluminum(铝) cans. Recycling 1 ton of paper or aluminum cans, the agency says, can save about 3 tons of CO₂ emissions (排放物) over producing those materials anew. Paper producers pay for the trees they process. If it was cost-effective to recycle paper, producers would be beating down your door to buy it. But they aren't. That means it's more expensive to recycle old paper than to cut trees and then replant trees for processing.

    Plastic can be recycled too. Given the recent drop in crude oil (原油) prices, it is now cheaper to make a new plastic container than to recycle an old one. Even if that were not true, the EPA says that recycling a ton of plastic saves only about a ton of CO₂. However, it doesn't take into account the water most consumers use to wash their plastic containers before having them recycled. The New York Times journalist John Tierney recently wrote, "If you wash plastic in water that was heated by electricity, then the effort of your recycling could be more carbon in the atmosphere."

    Glass is another recyclable material. To reduce greenhouse gas emissions by 1 ton you have to recycle 3 tons of glass. If one includes the cost of collecting glass waste from neighborhoods, and the pollution produced by the collection trucks and the recycling process itself, glass recycling creates more greenhouse gas emissions and is more expensive than making new glass, which comes primarily from sand that exists everywhere.

    If recycling were truly cost-effective, private companies would be lining up at your doorstep to buy your rubbish. Don't look now because they're not there.