Cellphones, tablets, and computers are keeping children and teenagers awake at night-even when they' re not in use, according to new research. A study published on Monday in JAMA Pediatrics says that media devices are causing kids to sleep less and reducing the quality of sleep that they get. This leads to trouble of staying awake the next day.

Researchers analyzed hundreds of studies of children and teens aged 6-19. The scientists found a strong and consistent association between the use of technology at bedtime and poor sleeping. The reason is not just that kids are staying up too late with their devices. Using a computer can overstimulate the mind and emotions, the researchers say. A smartphone or tablet also gives off a light that affects the body's natural timing. These factors contribute to poor quality sleep. And many kids could be at risk. According to the study,72% of all children and 89% of adolescents have at least one device in their sleep environment. Most of these devices are used near bedtime.

"The harmful association between screen-based devices and kids' sleep is a major public health concern," the study concludes. In their conclusion, the researchers urge parents to understand the damaging influence of device use before sleep.

   It is a familiar scene these days: employees taking newly laid-off co-workers out for a drink for comfort. But which side deserves more sympathy，the jobless or the still employed？On March 6，researchers at a conference at the University of Cambridge suggested it was the latter.

Brendan Burchell，a Cambridge sociologist，presented his analysis based on various surveys conducted across Europe. The data suggest that employed people who feel insecure in their jobs show similar levels of anxiety and depression as those who are unemployed. Although a newly jobless person's mental health may“bottom out”after about six months，and then may even begin to improve，the mental state of people who are continuously worried about losing their own job“just continues to get worse and worse”, Burchell says.

Psychologists support this theory by arguing that human beings feel more stressed during times of insecurity because they sense an immediate but invisible threat. Patients have been known to experience higher levels of anxiety, for example, while waiting for examination results than knowing what they are suffering from—even if the results are cancer. It's better to get the bad news and start doing something about it rather than wait with anxiety.  When the uncertainty continues, people stay in a nonstop“fight or flight”response, which leads to damaging stress.

But not every employee in insecure industries has such a discouraging view, Burchell says. In general, women get on better. While reporting higher levels of anxiety than men when directly questioned, women score lower in stress on the 12-item General Health Questionnaire, even when they have a job they feel insecure about losing.  As Burchell explains,“For women, most studies show that any job—it doesn't matter whether it is secure or insecure—gives psychological improvement over unemployment.”He supposes that the difference in men is that they tend to feel pressure not only to be employed, but also to be the primary breadwinners, and that more of a man's self-worth depends on his job.

   Green Consumer Day is observed worldwide every year on September 28. The_______is to purchase only eco-friendly products as a way to________the impact consumerism has on the environment.

But we should NOT consume products even on Green Consumer Day.

Creating any product_______the use of energy; let's not_________climate change. For the most part, that energy is going to come from fossil fuels-coal, oil and natural gas._______coal or drilling for oil and natural gas creates environmental nightmares, while burning fossil fuels is the biggest_______of climate change. Unless a product is made using 100 percent_______energy, it will have a carbon footprint. We all know how_______the planet is heating up, so our goal should be to shrink our footprints, rather than expand them．

Manufacturing_______uses a lot of water. No matter how______a product is, water will be needed to clean the materials and clean it again_________the product is made. Many parts of the world are suffering from________ We can help conserve our precious water resources by buying fewer products, even if they're_____

Most products will still_________in trash. We don't need more solid waste! Even if the eco-product we buy is not disposable, the packaging it comes in will get thrown away.

Why go shopping when you could be out_________nature? Shopping can be a pretty stressful way to spend an hour or two. Wouldn't you rather take a walk, have a picnic or otherwise have fun with friends and family?

Buying more stuff adds to our_______and doesn't make us any happier. Most of us_______to have even more things than we can use. Adding to the load just increases the________of the mess we need to address. Plus most people________that spending time with family and friends makes them much happier than acquiring_________, even if it's green.