Archive for April 26th, 2013
4/26

In April, students across the country took part in events and competitions to help foster interest in robotics. Here is a closer look at several events that help tie technology to education. Read more


Credit: Stuart Crawford

4/26
Credit: Les Chatfield.

Credit: Les Chatfield.

Two years ago, the Nielsen ratings organization estimated that there were 114.7 million television sets in the U.S., representing 96.7% of all households, down slightly from the year before. With more and more content available online and viewable through computer monitors, tablets, and even smartphones, an increasing number of homes are becoming “zero TV.” That number has just reached 5 million, up from 2 million in 2007. With so many people throwing away their boxes, that means of a lot of additional e-waste, a big burden on the environment, especially considering that, according to EPA estimates, only 15 to 20 percent of all e-waste is currently being recycled.

This is particularly troublesome in the case of the old CRT (cathode ray tube)-style TVs and monitors, which are large and contain as much as 27 percent lead in the glass around and behind the picture tube known as the funnel and frit. EPA has designated CRTs as hazardous household waste, which means that they should not be going into landfills.

So what can be done with the leaded glass? Until recently, old CRT glass was recycled into new CRT glass. But that market has all but dried up in favor of newer LCD, LED and plasma models. That leaves CRT glass at the end of its useful life, all dressed up with no place to go. Read more


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