Time is more precious than money for an increasing number of people who are choosing to live more with less—and liking it.

    Kay and Charles Giddens, two lawyers, sold their home to start a B&B hotel. Four years later, the couple dishes out banana pancake breakfast, cleans toilets and serves homemade chocolate chip cookies to guests in a B&B hotel surrounded by trees on a hill known for colourful sunsets.

    “Do I miss the freeways? Do I miss the traffic? Do I miss the stress? No,” says Ms. Giddens, “This is a phenomenon that's fairly widespread. A lot of people are revaluating their lives and figuring out what they want to do. If their base is being damaged, what's the payoff?”

    Simple living ranges from cutting down on weeknight activities to sharing housing, living closer to work, avoiding shopping malls, borrowing books from the library instead of buying them, and taking a cut in pay to work at a more pleasurable job.

    Vicki Robin, a writer, lives on a budget equal to a fifth of what she used to make. “You become conscious about where your money is going and how valuable it is,” Ms. Robin says, “You tend not to use things up. You cook at home rather than eat out…”

    Janet Luhrs, a lawyer, quit her job after giving birth and leaving her daughter with a nanny for two weeks. “It was not the way I wanted to raise my kids,” she says, “Simplicity is not just about saving money; it's about me sitting down every night with my kids to a candlelit dinner with classical music.”

    Mrs. Luhrs now edits a magazine, Simple Living, which publishes tips on how to buy recycled furniture and shoes, organize potluck dinners instead of expensive receptions, and generally how to consume less.

    Mrs. Luhrs explains, “It's not about poverty. It's about conscious living and creating the life you want. The less stuff you buy, the less money goes out of the door, and the less money you have to earn.”

    In the mid-2000s, Waze Mobile co-founder Ehud Shabtai received a cutting-edge (尖端的) gift from girlfriend: a GPS. The expensive gift was supposed to be helpful. But straight out of the box, it was already out of date.

    Shabtai, a coding enthusiast, had an immediate reaction to reinvent. Shabtai's solution? To build an app. With 80 million monthly active users globally and nearly 400,000 superusers who function much like Wikipedia volunteer editors (editing maps rather than words), Waze Mobile caught the eye of Google as a revolutionary approach to navigation (导航).

    Acquired by Google in 2013, Waze's value mainly lies in its high rate of user involvement. Unlike traditional navigation apps that simply show directions, Waze asks its users to report accidents and other road conditions in real time, so other users can avoid the traffic by using an alternative route.

    The goal behind Waze's approach is an ambitious one: not just avoid traffic, but end it altogether. Waze is finding new ways to put its loyal and active user base to use to make that vision a reality, including a plan to make carpooling (拼车) cool.

    To be sure, traffic jams are troubling people all over the world. Waze has been quietly ahead of the game for some time. In 2013, when Waze was just a small digital-mapping business with limited resources it had something Google Maps and other competitors didn't: richer GPS guidance thanks to its stream of live traffic reports from users.

    These users were the basis of Shabtai's plan to solve for his GPS device's “silent” hardware: he grounded the app in software that could be perpetually updated by users, anywhere and anytime.

    Waze Carpool is going straight to the heart of traffic jams, trying to get more drivers off the road and into carpools. The app has already connected tens of thousands of rideseekers with drivers willing to ferry them along a shared route, and that trend could be the answer to a traffic-free future.

    A mechanical bicycle lock, like a U-lock, should be attached to a solid and immobile object like a rack (架子) to ensure safety. However, these racks are quite rare and popular, thus often occupied and although a bicycle lock prevents the bike from being carried away, as it fixes single parts like the frame or the wheels, other parts can be dismounted. Therefore an electronic system, consisting of several sensors, can extend the range of protection with only few components and less effort.

    The ‘FID Bikealarm' is a motion sensitive electronic alarm system that is attached to the rails of a bike saddle (座椅). Featuring omnidirectional (全方位) movement sensing to detect tiny movements or speeding-up and a small whistle emitting >120dB alarm sound to scare off potential thieves by arousing attention.

    The internal microcontroller uses a complex computer program to distinguish between a serious theft and harmless shaking movement as it senses and adapts to the environment. The usage is quite simple: identify yourself by holding the RFID tag close to the case to lock or unlock the alarm system signaled by feedback sounds. The RFID-technology is predestined for achieving this simple and secure interaction because it doesn't require any complex system, interaction or other devices—just a small tag.

    The ‘RFID Bikcalarm' is meant to be a useful add-on to mechanical bicycle locks as it massively extends the range of protection with few components. It is low-cost, durable and easy to use. The internal battery can be charged by USB.

    In the depths of the French Guianese rainforest, there still remain unusual groups of indigenous(土著的)people. Surprisingly, these people live largely by their own laws and their own social customs. And yet, people in this area are in fact French citizens because it has been a colony of the French Republic since 1946. In theory, they should live by the French law. However, their remote locations mean that the French law is often ignored or unknown, thus making them into an interesting area of “lawlessness” in the world.

    The lives of these people have finally been recorded thanks to the effects of a Frenchman form Paris called Gin. Gin spent five months in early 2015 exploring the most remote corners of this area, which sits on the edge of the Amazon rainforest, with half its population of only 250,000 living in its capital, Cayenne.

    “I have a special love for the French Guianese people. I have worked there on and off for almost ten years,” says Gin. “I've been able to keep firm friendships with them. Thus I have been allowed to gain access to their living environment. I don't see it as a lawless land. But rather I see it as an area of freedom.”

    “I wanted to show the audience a photographic record touching upon the uncivilized life,” continues Gin. “I prefer to work in black and white, which allows me to show different specific worlds more clearly.”

    His black-and-white pictures present a world almost lost in time. These pictures show people seemingly pushed into a world that they were unprepared for. These local citizens now have to balance their traditional self-supporting hunting lifestyle with the lifestyle offered by the modern French Republic, which brings with it not only necessary state welfare, but also alcoholism, betrayal and even suicide.

    It happens from time to time: you feel terrible when you take your first bite of a certain food, but after eating more, you find yourself enjoying it. This is what is called an acquired taste. But why do our tastes change?

    The answer, according to a recent study presented at an American Chemical Society meeting in Boston, lies in proteins in our saliva (唾液).

    Most of us tend to think saliva, almost entirely made up of water, is “only a mouth lubricant (润滑剂) helping us to swallow food,” the New York Times said. However, it also contains many proteins, which can help break food down, protect our teeth and help in tasting food.

    To explain how these proteins affect taste, a team of scientists from Purdue University in the US invited 64 volunteers to drink a bitter-tasting chocolate milk three times a day for six weeks and rated their tastes at the same time.

    According to the research, the participants found a strong bitterness on the first day, but the unpleasant flavor came to decrease as time went on and finally disappeared.

    That is not all that was changing. A noticeable increase in the levels of proline-rich (富含脯氨酸的) proteins was found in the saliva samples of the test subjects in the research period. These proteins serve to reduce the bitterness we taste and improve our adaptation to this flavor.

    “We think the body adapts to reduce the negative feeling of these bitter compounds,” said Cordelia Running, a food scientist at Purdue University. “Saliva changes flavor, which in turn changes eating choices.”

    This change in taste not only makes the food tastier, but also helps people keep an appetite for healthy food whose flavor might otherwise keep them away.

    One day, these proteins may even be extracted (提炼) and used as a separate food additive that could help people stick to healthy food whose flavor they continue to dislike, researchers told Science Alert. And according to Running, even it doesn't happen, the idea that “maybe some little piece of your body is actually trying to help you” could really benefit some people. Let's wait and see.

    We don't know how different our future will be in the future. We can only try to imagine it.

    At first we think about human relationship. In the year 2050, we will use computers almost every day. We will be making new friends through the Internet—even our husbands or wives will be met in this way. It will be much faster and easier for us. On the other hand, our relationships with people won't be as important as they are today—we will feel a little lonely.

    Computers will also help us in many other activities in 2050.For example, they will be used by the children at school to make their learning easier. In addition, there will be much more other machines which will play a similar role as computers, like robots which will do the housework for us.

    Spending holidays will also be completely different. Traveling to other planets or to the moon will be available for everyone. Means of transport will, of course, change, too. We will be using solar­powered cars, which will be much more environmentally friendly.

    We could expect that the faster technological progress would lead to a more polluted environment. But it isn't true. We will pay more attention to protecting the environment. And, scientists will probably find cures for many dangerous diseases, like cancer or AIDS. Therefore, our surroundings as well as health will be in better condition.

    Although we can't predict the exact changes which will be made in the world, we often think about them. We worry about our and our children's future; we have expectations, hopes as well as fears. But I think we should be rather optimistic about our future. We should be happy and believe good things will happen.