CD

Please get this out quickly: Japanese researchers have created a incredibly scratch-resistant transparent polymer coating for LCD screens and CDs and DVDs that can stand up to pretty much anything you throw at it. A reporter for New Scientist took a brillo pad to a CD with the coating and wasn't able to make a single scratch, and writing on it with a permanent marker didn't have any effect either.

[Via textually.org]

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Scratch-proof CDs and cellphone screens