The exterior is completely metal and the only other exposed material on the outside is concrete.
"Ending the exemptions from age classification for hard copy music videos will be an important step forward in making sure that children are not inadvertently exposed to unsuitable material, " said Mr Bailey.
The material is exposed to ultraviolet light through a mask patterned with the outlines of cells.
The bills' polymer material was exposed to temperatures as high as 284 degrees Fahrenheit and as low as minus-103 degrees in the central bank's laboratories and in a series of independent labs, according to Martine Warren, chemist and scientific adviser at the Bank of Canada.
Alex Hartley and 18 volunteers excavated about six tonnes of material from an island exposed by a glacier on the Svalbard peninsula in Norway.
Locklin and his colleagues sprayed the substance onto materials and exposed them to ultraviolet light, which causes a covalent bond with the host material.
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The extruder is designed specifically for use with MakerBot PLA, a new plastic material based on corn, that Bre Pettis claims wont expand when exposed to the heat -- which means it wont contract when it cools, leading to smoother printed objects and less cracking.
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The kids who participate in the videos are not fed scripts, rather they are expected to learn the material and become the teachers, bringing science to life for the students exposed to their content.
To date, unlike other material risks, companies have not generally disclosed such dealings - leaving investors unwittingly exposed to the distinct possibility of not only moral hazard from doing business with terrorists that they may find unacceptable, but also the possibility that they could suffer financially if the investment blows up on them, figuratively if not literally.
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