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A new survey shows that teens in the Ontario average seven hours a day of “screen time”.

The study grouped together time spent watching TV and Internet use as “sedentary behaviour” and suggests a link to a decline in physical and mental health among the students.

What’s interesting here is the implicit suggestion that a person’s entire use of a computer could be considered as a bad thing. Grouping all computer time together with watching TV as “screen time” is, I think, somewhat irresponsible and fails to recognize the diverse roles computers play in our lives.

It’s true that computers can be used for consuming content (YouTube videos or internet TV channels for example) as well as for solitary activities like playing games. These things should perhaps be moderated as you might TV use.

But computers can be used for so many other things now – researching homework assignments, communicating with friends, collaborating with other students, planning trips or shopping. So to group all these activities together as if they are all self-indulgent activities that could be completely avoided is unrealistic at best.

The reality is that computers are now so integrated into our daily lives, and even more so with the younger generation, that to consider taking “screens” out of the equation wholly is simply not possible.

A more interesting piece of research would separate solitary entertainment activities from productive or communication activities, and also look at the differences between students doing such activities offline or online.

It’s also worth considering what the researchers might have found if they’d looked at adults. Most of the office-bound population has seven hours of sedentary time a day – it’s called doing their work at their desk! In this context, the researchers findings are nothing special.

Read more of the study at CBC News.

In other news, researchers find that people use computers a lot…

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iPads at Breakfast (picture from the source article at NYTimes.com)

This article in the New York Times looks at a typical “connected” family’s life, and how the constant pull of e-mail, Twitter and Facebook has interfered with their business and family lives. Here’s an example:

Recently,[Mrs Campbell] was baking peanut butter cookies for Teacher Appreciation Day when her phone chimed in the living room. She answered a text, then became lost in Facebook, forgot about the cookies and burned them. She started a new batch, but heard the phone again, got lost in messaging, and burned those too. Out of ingredients and shamed, she bought cookies at the store.

Is technology diminishing the amount of empathy and the quality of contact we have with each other? As an expert quoted in the article says, “The way we become more human is by paying attention to each other. It shows how much you care.”

The more challenging question of course, is what we can do about this. I’m guessing abandoning technology is not really an option!

Read the full article at NYTimes.com.

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Building the synthetic cell

The BBC reports that researchers, including Craig Ventner of the Human Genome Project, announced that they’ve managed to synthesize a cell’s DNA. This is the “opposite” of mapping DNA: using a genome that’s been mapped, create working DNA and put it in a cell.

According to Ventner, “the new bacteria replicated over a billion times, producing copies that contained and were controlled by the constructed, synthetic DNA.” It’s a big breakthrough — the first step towards custom-engineering life — that could have some dire consequences if not properly regulated.

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