Have you ever had trouble sleeping in a new place?

    Lots of people do. And now researchers from Brown University in Rhode Island think they know why. They found that one-half of the brain "remains more awake" than the other half when people are trying to sleep in a new place.

The sleep findings were reported in Current Biology by Brown University. In their report, the researchers said many people report they have a harder time sleeping the first night at a hotel or other places outside their home. They call it "first-night influence". "In Japan they say, 'If you change your bed, you can't sleep,'" said Yuka Sasaki, one of the report's writers. "You don't sleep very well in a new place. We all know about it."

    The researchers measured brain waves (测量脑波) for 35 volunteers over two nights in a laboratory. The two nights were a week apart (间隔). They found during the first night the left half of the brain was more active than the right half. This was during the first deep-sleep period, the researchers said.

    Sasaki said a lot of questions remain.

    Researchers did not keep measuring brain waves all night long. So, they don't know if the left half keeps "watch" all night, or whether it "works in shifts (轮换) with the right half later in the night". They also do not know why the brain activity, at least during the first period of deep sleep, is always on the left half.

    For some, this research may be calming. It is good to know that our brain is "looking out for us" in a new place. But it may not help with sleep. That brain activity, at least according to this new research, makes it harder to get the sleep people need to wake up well rested in the morning.

    We choose food to eat every day．We might know some of the reasons for the choices，but food scientist Dr．

    Brian Wansink has found that we are unaware of 90% of our food decision．Here are some"big ideas"in his research on the hidden power that drives our eating．

    Food for thought

    In one of the studies，Dr．Wansink made volunteers eat chocolate yogurt in a dark room．He told them the yogurt was with a taste of strawberry even though they were all eating chocolate．Finally，65% of volunteers described the yogurt as having a"nice strawberry flavor!"

    The research shows that our imagination has an effect on our taste．If you expect a food to taste good，it will．So take a moment before you eat your unpleasant healthy food to remind yourself that you are eating delicious fish and chips．

    Our eyes eat first

    How your food looks is just as important as how it tastes．Dr．Wansink gave cakes to three groups of people．The cakes were exactly the same but served in different ways．

①Group one got the cake on a nice plate．

    ②Group two got the cake on a paper plate．

    ③Group three got the cake on a piece of paper．

    Dr．Wansink then asked the people how much they would pay for each cake．

    Dr．Wansink then asked the people how much they would pay for each cake．

    ①Group one who got the cake on a nice plate would pay $1.27．

    ②Group two who got the cake on a paper plate would pay 76 cents．

    ③Group three who got the cake on a piece of paper would pay 53 cents．

    Take some time to make your healthy food look amazing．Cut your fruit into a flower shape and put your colourful vegetables on nice plates．This works really well for your appetite （胃口）．

    Out of sight，out of stomach

    Dr．Wansink also found that when people sat at the desk full of snacks，they ate 71% more of snacks a day than those sitting near a clear table．We eat what we see．As a result，put all the unhealthy food in your fridge．

    Hide it and make it really hard to get to．The closer bad food is，the more you eat it．

    China isn't well known for its science fiction films, but recently a new film called The Wandering Earth has become a great success. It has earned over $697 million worldwide. It tells an amazing story of the Earth in danger, along with exciting scenes of spaceships and outer space.

    The Wandering Earth is based on a story by Liu Cixin. In the story, the sun was dying out, people all around the world worked together to move Earth out of the solar system and sail Earth to a new star system. The film began with the early life of a young boy who was born just after the project started. The engineers pushed Earth away and built underground cities that were vast enough for all the other humans to live in. Yet the 2500 years' journey came with all kinds of dangers. In order to save the humans, a group of young people came out and fought hard for the planet.

    China is playing an increasingly important part in the film industry. Its growing middle class has seen the rise of film market across the country, and Chinese viewers have become an important part of film industry. Hollywood Projects like Iron Man 3 specifically filmed more scenes in China for its market. Chinese film industry is keeping growing. Just as Americans want to get into the Chinese market, Chinese filmmakers are looking for the way to the international market.

    According to The Hollywood Reporter, The Wandering Earth is China's "first space" film. Chinese science fiction writer, Anna Wu, says science fiction "is a new challenge for the Chinese film industry." Some Chinese filmmakers have achieved a great success at this kind of film, but most of them still have a long way to go.

    Still, Wu notes that within China, "Not all the science fiction films have had success. It still takes time to accept science fictions, and that with the development of our country, people are getting busier, wealthier and more stressed," which creates a perfect environment for this new kind of film and television. The Wandering Earth, she says, is a good example. "I also care about the money it earns, which will affect the future of Chinese science fiction films."

    On July 1, 2019, Shanghai began the waste sorting programme. There are four kinds of waste: wet waste, dry waste, dangerous waste and recyclable waste. Under the new rules, people must put their waste in the right place. Or they will be fined more than 50 yuan and less than 200 yuan.

    Sorting waste is very important. By doing so, we can take out non-degradable(不可降解的)waste and save resources(资源)In return, we can get a better environment.  ▲   Luckily. Internet companies like Wechat, Baidu and Alipay made apps to help.

    How do we use the apps? Just open one waste-sorting app and write down the keyword. Then the app will tell us the answer and why, Alipay says its waste-sorting app got one million users in just three days and the number is still growing. They are working on the app and people may use it by taking photos in the future.

    The waste-sorting programme is the talk of the whole country now. And another 21. 3 billion yuan will be used on the programme in 46 cities by the end of 2020.