Most of us have lost our wallet at some stage in our lives. But few would imagine having it returned after 66 years. Edward Parker dropped his wallet in 1950 into an inaccessible spot behind a bookshelf, while working as an electrician, repairing World War Two bomb damage in the palace. The wallet stayed there until this year when a builder, doing some restoration work, finally found it.

    The wallet is a time capsule. Its leather and webbing has long ago started to disintegrate. But it contains numerous pictures of family, invoices, receipts, old union cards, results of a chest X-ray (sent to him in 1948, the same year as the NHS was founded), a national service card dated 9 December 1944 and a medical insurance card. His business cards—E Parker, Electrical Contractor—seem almost original. Reflecting the typical methods of contact of the time, they have an address but no telephone number.

    A month ago I was speaking to a press officer Lambeth Palace and he mentioned that the wallet had just been handed in. We thought it might be nice to try and work out whose it was and give it back to the family. Edward Parker is a pretty common name, but his medical card contained two places of residence—Poets Road and Springdale Road in north London. From this, Islington Council were able to find details of a marriage between Edward Parker and Constance Butler in 1947.

    That information was enough to work out that he was still alive and in a care home in Essex, so I went to visit him. Now 89, Edward has dementia (痴呆), but he was clearly happy to get the wallet and in particular, the photographs back. He pointed out pictures of his mother and father, his brother, his cousins and his wife Constance, who was with him when I visited. He hadn't seen a picture of his father since he lost the wallet, Constance, 90, said.

    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.

    Could the device, smartphone or PC, which you are using affect the moral decisions you make when using it? To test it, researchers presented multiple dilemmas to a sample set of 1,010 people. The participants were assigned a device at random.

    One case of the questions participants were asked is the classic “trolley(有轨电车) problem”: A runaway trolley is headed towards five people tied up on a-set of train tracks. You can do nothing, resulting in the deaths of five people, or push a man off a bridge, which will stop the trolley. The practical response is to kill one man to save five lives, which 33. 5 percent of smartphone users chose, compared to 22.3 percent of PC users.

    “What we round in our study is that when people used a smartphone to view classic moral problems, they were more likely to make more unemotional, reasonable decisions when presented with a highly emotional dilemma, “Dr Albert Barque-Duran, the lead author of the study, told City, University of London. “This could be due to the increased time pressure often present with smartphones and also the increased psychological distance which can occur when we use such devices compared to PCs.”

    As for why the researchers started this study, Dr Barque-Duran noted, “Due to the fact that our social lives, work and even shopping take place online, it is important to think about how the contexts where we typically face moral decisions and are asked to engage in moral behavior have changed, and the impact this could have on the hundreds of millions of people who use such devices daily. “It's clear that we need more research on how our devices affect our moral decision making because we're using screens at an ever increasing rate.

    Parents in Spain are being urged to go on a weekend homework strike this month in protest against the unacceptable amount of after-school tasks their children are given.The homework load of Spanish children has long been a sore point with some parents,who argue that the burden is too great,places too much pressure on pupils and eats into family time.

    According to a study by the Organization for Economic Co-operation and Development (OECD),Spanish 15-year-olds have 6.5 hours of homework a Week compared with an average of 4.9 across the 38 OECD countries. The Spanish Confederation of Associations of Mothers and Fathers of Students (Ceapa) is calling on parents whose children attend Spanish state schools to boycott weekend homework in November.

    "We've lost a bit of common sense in this country when it comes to talking about education and we've got a system in which boys' and girls' free time has disappeared",said Jos Luis Pazos,president of Ceapa."Schools are passing on tasks to families that they shouldn't be.It starts with children from the ages of three to six doing half an hour's homework every day.For us,that's an unacceptable situation".

    Pazos said Ceapa disagreed with the belief that children should endure huge amounts of homework in the hope that it would ensure them a better future.They should be.happy when they're little and that life isn't just about someone telling you that you have to suffer inexplicably（难以理解地）.The model needs to change because society has changed.

    Schoolchildren have to fit their homework around the school day,which varies from region to region and school to school,but starts early from around 8 am or 9 am and finishes anywhere between 2 pm and 5 pm.However,schools are increasingly using an 8 am-2 pm timetable to save money and in the face of evidence that suggests the longer hours do not yield better results.

    A spokesman for the education department of Madrid said homework was a matter for individual schools rather than regional governments.They're the ones who know best what the need is in each case.

    Recently whenever I turned on my computer or my mobile phone, news about the great effect of Hurricane Harvey on thousands of people caught my eyes. We saw many unfortunate events. However, there were also the bright news that confirmed the goodness of mankind. As a journalist, I wrote many human interesting stories during my career. That's why the story about the guys in the bakery caught my eyes.

    When the staff at a Mexican bakery chain in Houston were trapped inside the building for two days, they didn't sit there feeling sorry for themselves. They used their time wisely after flooding caused by Hurricane Harvey. While they were waiting for the eventual rescue that came on Monday morning, four decided to make as many loaves of bread as possible for their community.

    The flood water rose in the street outside. They took advantage of their emergency power supply to bake bread. They used more than 4,200 pounds of flour to create hundreds of loaves and sheets of sweet bread. Although the water kept rising, they continued baking to help more people. By the time the owner managed to get to them, they had made so much bread that we took the loaves to loads of emergency centers across the city for people affected by the floods.

    The store manager, Brian Alvarado, told The Independent, "Whenever a disaster occurs, nobody should just feel forlorn. Instead，we should take positive action to save ourselves and help others. Our acts of kindness will make a big difference."