What is a fair wage? {#blank#}1{#/blank#} These are some of the questions the United Nations International Labour Organisation(ILO) has recently investigated.

    With a global population of over seven billion, is it actually possible to measure an average amount? {#blank#}2{#/blank#} Using the total wage bill from over seventy countries, they have multiplied the amounts by the number of earners in each country. The economists then tallied up the results and divided them by the total number across the world The result was a world average wage equivalent to $1,490 a month. {#blank#}3{#/blank#} 

    This figure might seem very high because they calculated the amount using purchasing power parity dollars, which takes into account the fact that it is cheaper to live in some countries than others. {#blank#}4{#/blank#} 

    Calculating an average sum like this might not be a completely fair representation, but these figures do help us to understand how the world is developing, both economically, in the quality of life people are experiencing and their standard of living.

    But the result shows that the average wage is still relatively low and there remains a huge difference in levels of affluence around the world. {#blank#}5{#/blank#} Is this fair? For many, pay equality still seems very far out of reach.

A. The ILO has now tried to work out the sums.

B. The ILO used statistics from over 70 different countries

C. Why aren't more people in the world offered pay equality?

D. That is approximately $75 a day for a 20-day working month.

E. Some people live on just two dollars a day, while others are earning more than a million dollars a year.

F. When someone works for themselves, what are they called?

G. The data also did not include the huge number of people who appear in poverty statistics or who are self-employed.

    The Americans believe that anybody can become president of the United States. In a recent Hollywood comedy, that is exactly what happens.

    Dave Kovic, played by Kevin Kline, is a kind-hearted man who runs a business that finds people jobs. He leads a typical American way of life, except for one thing－he looks exactly like the president, Bill Mitchell. In fact, the only thing that makes him different from the nation's leader is that he is very nice!

    The president has started using look-alikes during some public appearances. Dave is offered a chance to “serve his country” by becoming one. However, things go wrong. The president becomes very ill and Dave ends up acting as the president forever.

    Director Ivan Reitman, who made the popular and successful comedies like Twins, Ghostbusters and Legal Eagles, could have gone for easy laughs by making fun of the American government. Instead, Dave is an attractive comedy about an ordinary man in extraordinary situations. Kevin Kline gives a double performance as Dave and the president, and Sigourney Weaver is at her best as his First Lady. The love story that develops between her role and Dave is a real classic.

    The film is 100% American. However, if you've ever felt that anybody could do a better job running the country than the people in power, then you'll enjoy Dave!

    In an unmanned supermarket,a customer waits to pay.With the use of advanced digital payment technology, including biological recognition and in-depth learning,the man leaves in a minute.There's no cashier in the store.At a large university,students use a hand-scanning machine that authorizes their entry into the gym.Those people are using “smart machines” which identify people by their physical characteristics.These new devices use fingers,hands, faces,eyes and voices.Some machines may even use smells.This new technology,called biometrics,gets information from parts of the body.

    In the past,biometric machines were used mainly in government agencies or in prisons.But now that the cost of the technology is lower,these machines are starting to be used everywhere,from border services to schools.

    Some people,however,are concerned that these machines will mean the destruction of personal privacy.They worry that the machines will get personal information about them.“I know it seems like these machines are invading our privacy,but actually,biometric machines help to protect it,”says Jay Tarkett,who works at a company that develops the machines.“They can be used instead of passwords on a computer,for example.They can also identify criminals at airports.So,really,they help to promote public safety,and all the information stored is kept confidential by  the machine itself.”

    Some people don't like the idea of using fingerprints because they associate them with criminals,and feel like they are being accused of something.In addition,they don't work for some people,such as bricklayers,who wear down their fingerprints.Yet,face recognition does work well because the subject doesn't really have to do anything.To cash a check at a bank,for example,the customer has to do nothing more than look at a machine similar to an automatic teller.If the face matches the picture kept on fie,the customer gets the money with no problems.The need to carry identification with you from place to place,then,would all but cease.

    It has been found that the hand scan works well in the college gym.Before this machine was used,students at the college entered the gym using cards similar to credit cards.The problem was that students often lost or forgot their cards.With the hand-scanning machine,however,the problem was solved right away.

    But the machines are still new,and there can be problems.For example,voice recognition works on the phone, but it is not precise,and can be tricked.Another constraint（限制）we notice,with machines that use face recognition in particular,is that they can be fooled if people color their hair or gain a lot of weight.However,this particular problem may be solved by a new type of technology that scans a person's iris,the colored part of the eye.It can even identify the person from a few feet away,recognizing a customer as he or she approaches the ATM.

    Easter (复活节) is still a great day for worship (崇拜), randy in baskets and running around the yard finding eggs, but every year it gets quite a bit worse for bunnies (兔子).

    And no, not because the kids like to pull their ears. The culprit is climate change, and some researchers found that rising temperatures arc having harmful effects on at least five species of rabbit in the US.

    Take the Lower Keys March rabbit, for instance. An endangered species that lives in the Lower Florida Keys, this species of cottontail is a great swimmer—it lives on the islands!—but it is already severely affected by development and now by rising levels. According to the Center for Biological Diversity, an ocean level rise of only 0.6 meters will send these guys jumping to higher ground and a 0.9-meter rise would wipe out their habitat (栖息地) completely.

    The snowshoe hare, on the other hand, has a color issue. Most of these rabbits change their fur color from white in the wintertime to brown in the summer, each designed to give them better cover from  predators (捕食者). As the number of days with snow decreases all across the country, however, more and more bunnies arc being left in white fur during brown dirt days of both fall and spring, making them an easier mark for predators. Researchers know that the color change is controlled by the number of hours of sunlight, but whether the rabbit will be able to adapt quick enough to survive is a big question. The National Wildlife Federation has reported that hunters have noticed their numbers are already markedly down.

    American pikas or rock rabbits, a relative of rabbits and hares, might be the firs' of these species to go extinct due to climate change. About 7-8 inches long, pikas live high in the cool, damp mountains west of the Rocky Mountains. As global temperatures rise, they would naturally migrate (迁徙) to higher ground - but they already occupy (占据) the mountaintops. They can't go any higher. The National Wildlife Federation reports that they might not be able to stand the new temperatures as their habitat beats up.

    The volcano rabbit has the same problem. These rabbits live on the slopes of volcanoes in Mexico, and recent studies have shown that the lower range of their habitat has already shifted upward about 700 meters, but there are not suitable plants for them to move higher, so they are stuck in the middle. Scientists are concerned about their populations.

    Native to the US, pygmy rabbits weigh less than 1 pound and live in the American West. They are believed to be the smallest rabbits in the world. Their habitats have been destroyed by development. Several populations, such as the Columbia Basin pygmy, almost went extinct and were saved by zoo breeding programs. Pygmy rabbits also rely on winter cover by digging tunnels through the snow to escape predators, but lesser snowfall is leaving them exposed.

    All of this gives new meaning to dressing up in a giant bunny costume (服装) this Easter.

    The death of the plastic credit card could be a step closer as high street names including McDonald's and the Co-op prepare to test a breakthrough finger-scanning payment technology.

    FingoPay, developed by British start-up Sthaler, uses a biometric reader to scan the veins of a shopper's finger, building up a “map” that is unique to each individual.

    By connecting this pattern with a credit card or bank account, the company plans to let shoppers pay simply by placing their finger in a pocket-sized scanner, doing away with cash and credit cards.

    Sthaler, founded by former music industry executive Nick Dryden, will begin testing the technology next month in Proud, a London nightclub. Mr. Dryden said McDonald's is experimenting with a pilot of the technology, and that Sthaler is also planning a project with Co-op's food stores.

    It comes amid growing interest in using biometric identification in payments, which backers believe are more secure and efficient than passwords and PINs. Apple Pay, which uses the iPhone's fingerprint technology, launched in the UK in 2015 and was followed by the Android equivalent in May 2016.

    Hendrik Kleinsmiede, the director of Visa Europe's innovation arm Collab, which is backing Sthaler, said the Fingopay technology was less immune to problems such as wet and dusty fingers or fraud. “People are ready to accept biometrics as a secure authentication mechanism,” he said.

    Sthaler says the chance that two people have the same vein structure is 3.4bn-to-one, making it virtually impossible to crack. The vein scanner, developed by Hitachi, is already being used by Barclays to identify business customers as well as in cash machines in Japan, but Sthaler has the unique rights to license it to retailers.

    In the trial at Proud set to begin in September, the technology will be used to speed up waiting times at the bar both by cutting down on cards and by being able to suggest drinks based on what a patron has previously ordered.

Cure for tiredness?

    Staying up late is a potential battle between parents and kids. But the solution could be as simple as changing your meal time.

    Researchers at the University of Surry, UK, found that delaying meals could help change one of the internal body clocks. Besides a “master” clock in the brain, there are clocks in other parts of the body. They are usually synchronized according to factors including light.

During the study, researchers tested 10 participants to examine the effect of changing meal times on their body clocks. The participants were given three meals —breakfast, lunch and dinner. In the first stage, participants received breakfast 30 minutes after waking. Lunch and dinner followed, after 5-hour intervals. In the second stage, each meal was delayed by 5 hours. Right after each stage, blood and fat samples were collected.

    Results showed that later meal times greatly influenced blood sugar levels. A 5-hour delay in meal times caused a 5-hour delay in the internal blood sugar rhythms.

    The discovery showed that meal times are in line with the body clock that controls blood sugar levels.

    This is a small study but the researchers believe the findings could help jet lag sufferers and night-shift workers.

    In a study by the University of Surrey in 2013, researchers explored what happened when a person's body was changed from a normal pattern to that of a night-shift worker's.

    After people work through the night, over 97 percent of the body's rhythmic genes are disrupted（扰乱，使混乱）.

    These findings explain why we feel so bad following a long flight, or after working at night, according to Simon Archer, one of the study's researchers.

    “It's like living in a house. There's a clock in every room in the house and in all of those rooms those clocks are now disrupted, which of course leads to chaos in the household,” fellow researcher DerkJan Dijk told the BBC.

Changing meal times didn't affect the “master” body clock — the one controlling when we get sleepy — but it can reset the body clock that controls blood sugar levels. This wouldn't necessarily cure jet lag completely, but it might reduce the negative effects.

A study published earlier this year suggested that just a weekend camping trip could be enough to reset our body clocks. And now this latest research shows regular food schedules could play a key part too.