What will our future look like? People have always been wondering about this question. Go on reading this text and you will know what will happen in the next fifty years.

    How can we know what the future will look like? To be able to understand the future, you must know the past. What has taken us to where we are today and what has changed along the way? The world has changed a lot in the last 150 years, but we humans are driven by the same basic needs as we were 150 years ago. Will this change in the next 150 years? No.

    What inventions have really made a difference in the last 150 years? In the past years, the inventions that have affected most people around the world for everyday living are the telephone, electricity, radio, television, computer, the car and the ability to communicate through the Internet. Then we of course have a lot of inventions that have made life easier, like new medicine, faster transports etc. In general, human beings have been working hard in the last 150 years to make the inventions so that they will be able to get control of the time and the world. Since there is still much to do in this area, this will be the focus at least for the next 150 years.

    Why do we need to predict the future? Predicting the future is important for two reasons: first we need to start to think about what kind of what kind of future we would like for ourselves and to pass on to the next generation, and then we need to know what decisions we need to make today that will give the best result in the future.

    How many men do housework? Recently a European commission (委员会) tried to find out people's ideas and reactions to the women's movement. As part of their survey (调查), they asked many men and women the question: “Who does the housework?” The men answered very differently from the women!

    The housework they asked people about were: preparing meals, washing dishes, cleaning the house and babysitting. 48% of British husbands said they did these things. 37% of Danish men helped in the house. But only 15% of Italian men said they did the housework; many of them said they never helped at all.

    But there was an interesting point of view from the wives. According to British wives, only 35% of their husbands helped in the house. And Italian wives said that their husbands hardly ever helped. The Italian and British men did not tell the truth! The Commission found that Danish men were the most trustful husbands; their answers were the same as their wives' answers.

    Do the men you know help in the house? Do you think the survey gives a true picture in your experience?

    I was a very lucky girl.Many girls didn't know they could take part in or even be good at sports,but I never needed to be told that because I grew up with my grandmother who was a great Olympian.Even today,many girls need that extra nod in sports,but where can they get it?

    The problem of robocalls has gotten so bad that many people now refuse to pick up calls from numbers they don't know. By next year, half of the calls we receive will be scams(欺诈). We are finally waking up to the severity of the problem by supporting and developing a group of tools, apps and approaches intended to prevent scammers from getting through. Unfortunately, it's too little, too late. By the time these "solutions"(解决方案) become widely available, scammers will have moved onto cleverer means. In the near future, it's not just going to be the number you see on your screen that will be in doubt. Soon you will also question whether the voice you're hearing is actually real.

    That's because there are a number of powerful voice manipulation(处理) and automation technologies that are about to become widely available for anyone to use. At this year's I/O Conference, a company showed a new voice technology able to produce such a convincing human-sounding voice that it was able to speak to a receptionist and book a reservation without detection.

    These developments are likely to make our current problems with robocalls much worse. The reason that robocalls are a headache has less to do with amount than precision. A decade of data breaches(数据侵入) of personal information has led to a situation where scammers can easily learn your mother's name, and far more. Armed with this knowledge, they're able to carry out individually targeted campaigns to cheat people. This means, for example, that a scammer could call you from what looks to be a familiar number and talk to you using a voice that sounds exactly like your bank teller's, tricking you into "confirming" your address, mother's name, and card number. Scammers follow money, so companies will be the worst hit. A lot of business is still done over the phone, and much of it is based on trust and existing relationships. Voice manipulation technologies may weaken that gradually.

    We need to deal with the insecure nature of our telecom networks. Phone carriers and consumers need to work together to find ways of determining and communicating what is real. That might mean either developing a uniform way to mark videos and images, showing when and who they were made by, or abandoning phone calls altogether and moving towards data-based communications—using apps like FaceTime or WhatsApp, which can be tied to your identity.

    Credibility is hard to earn but easy to lose, and the problem is only going to get harder from here on out.

    Portland, Oregon, just got another reason to call itself "Bike City USA".

UPS has started a trial program to deliver packages there using an electric-powered bicycle. The environmentally friendly Cargo Cruiser is a tricycle with a large brown box on the back. Like any electronic bike, the Cargo Cruiser can be powered by foot, motor, or a combination of both.

    UPS began testing e-Bikes in Hamburg, Germany, in 2012, but this is the first time the technology has been used for package deliveries in the United States.

The e-Bikes support UPS's efforts to reduce its carbon emissions, ease urban noise levels, and improve air quality. The amount of energy to be saved by using e-Bikes hasn't been quantified, but the test vehicle in Portland "will probably displace about two gallons of fuel every day", said Scott Phillippi, UPS's engineering manager.

    Phillippi says that one e-Bike alone won't create a huge difference in UPS's carbon emissions, but he describes it as “a piece of our overall strategy” as far as environmental impacts and efficiencies.

    It also ties into the company's broader strategy to settle a problem that troubles Portland and other cities around the world: traffic jam. According to UPS, traffic jam costs it hundreds of millions of dollars a year in additional operating costs. The time when the average UPS delivery truck is stuck in traffic is about 16 minutes a day, slowing its deliveries and increasing the company's carbon emissions.

    The pilot program is in its early stages and already has hit its first stage: ice storms pulled trees and branches down all over the city, blocking bike lanes and making travel dangerous. How do e-Bikes deal with it?

    If the trial proves successful, you may be able to see UPS delivery people wearing bike shorts in other places around the country, "Other cities have expressed some interest," Phillippi said.

Yosemite is a national park in California. It is very beautiful and big. The park includes more than 760,000 acres in the California Mountains. Most of the park is wilderness.

The part of Yosemite that everyone likes is Yosemite Valley. It is a tiny valley that is 7 miles long and less than 1 mile wide. It has tall rock walls and streams that splash down in waterfalls. More than two million visitors come to the valley each year.

One ranger (守护人) says the number of visitors is more than the land can handle. The valley has 4,500 camping spots. It has a hotel that can hold 4, 000 families. This is still not enough to handle all of the visitors. The valley has grown so big that it has a lot of traffic and crime.

A worker says the park is trying to keep the beauty of the park and let everyone visit. Some areas have been fenced off from people and planted with seeds to try to keep them beautiful.

A former worker thinks Yosemite should get more money to take better care of the park. He would also like to teach people what the park service is trying to do.

Some people are trying to save Yosemite Valley. A plan has been made to get rid of some buildings. There will be fewer cars allowed inside the park. More buses will help get people around.