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MathFolding Perfect Thirds
Origami provides a hands-on way to explore mathematical concepts. For more math, visit the MathTrek blog.
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HumansFrom the June 13, 1936, issue
A giant spectrographic camera and an electric fencing judge.
By Science News -
TechHow Products are Made
What does it take to manufacture an accordion or a zipper? Organized alphabetically by product name, this intriguing Web site provides details on how a wide variety of everyday and basic products are made. Go to: http://www.madehow.com/
By Science News -
Materials ScienceGreenhouse Glass: Squeezing and heating carbon dioxide yields exotic, see-through solid
Researchers have forged solid glass from carbon dioxide.