【推荐1】Picture the scene: It’s midnight. You’re very hungry after studying for a long time. Then you see a nice pie in the fridge. Do you eat it? It seems that you shouldn’t, for many reasons, including its influence on your studies.

Scientists have long known that eating late at night can make us gain weight. But now a new study has shown that late-night eating can also have a bad influence on our brains — it might hurt our ability to learn new things and store memories.

“We believe that late-night eating may affect (影响) our learning by affecting the parts of the brain that control learning and memory,” Dawn Loh, PhD, a project scientist at the University of California, Los Angeles, said, “We believe the timing of when we eat is the main cause of the damaged (受损的) memory.”

For the study, the researchers looked at mice with strict feeding plans. For two weeks, the mice were either allowed to eat during the time when they are usually the most active, or during the time when they usually sleep. The mice received the same amount(数量) of sleep and calories.

Then the researchers tested the brains of the mice. In one test, the researchers tried to find out whether the mice could remember that a room was connected to an electric shock(电击) after 24 hours had gone by.

The researchers noticed that, when the mice were put in the room again, those mice that ate when they should have been sleeping were less likely(可能的) to get scared than those mice that ate during usual hours. It means that they didn’t remember.

So think twice before the midnight snack — it might be bad for more than your weight.

【推荐3】You might feel full after having a big meal. But you may actually suffer from “hidden hunger”. This means that what you eat may fill your stomach, but it’s not giving you the proper nutrition that your body needs.

This happens when food lacks the vitamins and minerals people need to stay healthy, according to the World Health Organization (WHO).

At present, “hidden hunger” affects 2 billion people worldwide, including 300 million people in China. It is most commonly seen among children and teenagers and can result in bad immune system, blindness or even death, China News Service reported.

Many Chinese people don’t get enough iron, calcium, vitamin A and vitamin D. One main reason is that agricultural products don’t have much of these nutrients. Over 40 percent of China’s farmland is lost its vitamins and minerals, lowering the nutritional value of the crops that grow on it, according to Xinhua.

Many of the processed foods that people enjoy eating today, such as chips, burgers and cookies, have made the situation worse. Vitamins and minerals area easily lost when these foods are processed. People’s Daily noted.

The human body needs 16 kinds of minerals, including iron and calcium, and 13 kinds of vitamins, including vitamins A and D, to stay healthy. Vitamins help maintain healthy eyes and skin and allow your bones to grow properly. Minerals are important for maintaining blood pressure and making new cells.

In response, China’s government has created several action plans to improve public health, as well as develop and promote nutritious foods.

Eating more fresh nutrition—rich food like vegetables, whole grains and dairy can help us stay healthy. For vegetables like carrots and broccoli, boiling and steaming can better preserve their nutrition when compared to frying them, CNN suggests.

【推荐1】There are about 7 billion people on the Earth now. The world's population is a big problem because it will cause lots of problems in the future. More people will need more food and will need more room to live in as well.

The world's population growth rate rose from about 1.5 percent per year during 1950-1951 to over 2 percent in the early 1960s. Although the growth rate thereafter started to fall due to (由于) people getting married later as well as the development of technology, the rate is on the rise again now.

The important thing is not how large the population of the world is, but how fast the rate increases. The world population increased from 3 billion in 1959 to 6 billion by 1999. The world population will grow from 6 billion in 1999 to 9 billion by 2050. This great growth of the population will create a big problem by the year 2100—there will be over 10 billion people in the world then.

【推荐2】

How fast might your mobile phone network be in the future? After 3G and 4G,5G is on the way. 5G (from “the fifth-generation mobile networks”) is the latest generation of mobile communications, including extreme high bandwidth(宽带), low latency(低延时), and high density(高密度) connections. According to Science Daily, 5G tests are expected to start in 2019 in the US and by 2020 in the UK. China has already tested 5G in10 big cities and announced the start of 5G this year.

As a result of the increased size of networks, data transfer will be much faster and more reliable.5G is expected to be 10 to 100 times faster than the average speed of the current 4G network. It may enable many new uses that are impossible on older networks. For example, you can download a film within just 3 seconds. This used to take a few minutes with a 4G network. In addition, there will be enough capacity(容量) for everyone to chat on social media and watch movies on their phones. Scientists say 5G will help the development of self-driving cars and the “5G man-like robot”as well. Most importantly, 5G will help us build the Internet of things(IoT,物联网). loT connects everyday devices to the Internet. People can control their devices remotely. For example, on a hot summer’s day, you could turn on your air conditioning with loT before you go home. All of these things need very fast Internet speeds.5G will be the key.

Every single day, our technology seems to shift up a level. Some big companies like Huawei and Samsung have started to deliver. 5G products. 5G technology is becoming reality, It will make some unimagined changes. Let’s wait and see what it brings.